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Summary of Significant Accounting PoliciesOG&E's significant accounting policies are detailed in "Note 1. Summary of Significant Accounting Policies" in OG&E's <a href="http://www.sec.gov/ix?doc=/Archives/edgar/data/74145/000007414520000007/oge-20191231.htm" style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">2019 Form 10-K</a>. Changes to OG&E's accounting policies as a result of adopting ASU 2016-13, "Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Information" are incorporated within "Allowance for Uncollectible Accounts Receivables" below and discussed in Note 2 in this Form 10-Q.

<div style="margin-bottom:10pt;">Organization</div><div style="text-indent:36pt;text-align:justify;">OG&E generates, transmits, distributes and sells electric energy in Oklahoma and western Arkansas. Its operations are subject to regulation by the OCC, the APSC and the FERC. OG&E was incorporated in 1902 under the laws of the Oklahoma Territory. OG&E is the largest electric utility in Oklahoma, and its franchised service territory includes Fort Smith, Arkansas and the surrounding communities. OG&E sold its retail natural gas business in 1928 and is no longer engaged in the natural gas distribution business. OG&E is a wholly-owned subsidiary of OGE Energy, a holding company with investments in energy and energy services providers offering physical delivery and related services for both electricity and natural gas primarily in the south-central U.S.</div>

<div style="text-align:justify;margin-bottom:10pt;">Basis of Presentation</div><div style="text-indent:36pt;text-align:justify;">The Condensed Financial Statements included herein have been prepared by OG&E, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations; however, OG&E believes that the disclosures are adequate to prevent the information presented from being misleading.</div><div> </div><div style="text-indent:36pt;text-align:justify;">In the opinion of management, all adjustments necessary to fairly present the financial position of OG&E at March 31, 2020 and December 31, 2019, the results of its operations for the three months ended March 31, 2020 and 2019 and its cash flows for the three months ended March 31, 2020 and 2019 have been included and are of a normal, recurring nature except as otherwise disclosed. Management also has evaluated the impact of events occurring after March 31, 2020 up to the date of issuance of these Condensed Financial Statements, and these statements contain all necessary adjustments and disclosures resulting from that evaluation. </div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Due to seasonal fluctuations and other factors, OG&E's operating results for the three months ended March 31, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020 or for any future period. The Condensed Financial Statements and Notes thereto should be read in conjunction with the audited Financial Statements and Notes thereto included in OG&E's <a href="http://www.sec.gov/ix?doc=/Archives/edgar/data/74145/000007414520000007/oge-20191231.htm" style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">2019 Form 10-K</a>.</div>

<div style="text-align:justify;">Accounting Records</div><div> </div><div style="text-indent:36pt;text-align:justify;">The accounting records of OG&E are maintained in accordance with the Uniform System of Accounts prescribed by the FERC and adopted by the OCC and the APSC. Additionally, OG&E, as a regulated utility, is subject to accounting principles for certain types of rate-regulated activities, which provide that certain incurred costs that would otherwise be charged to expense can be deferred as regulatory assets, based on the expected recovery from customers in future rates. Likewise, certain actual or anticipated credits that would otherwise reduce expense can be deferred as regulatory liabilities, based on the expected flowback to customers in future rates. Management's expected recovery of deferred costs and flowback of deferred credits generally results from specific decisions by regulators granting such ratemaking treatment.</div><div style="text-indent:36pt;"> </div><div style="text-indent:36pt;text-align:justify;">OG&E records certain incurred costs and obligations as regulatory assets or liabilities if, based on regulatory orders or other available evidence, it is probable that the costs or obligations will be included in amounts allowable for recovery or refund in future rates.</div><div style="text-indent:36pt;text-align:justify;">The following table is a summary of OG&E's regulatory assets and liabilities. </div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:99.707%;"><tr><td style="width:1.0%;"/><td style="width:70.727%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:11.636%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:11.637%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">December 31,</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">REGULATORY ASSETS</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Current:</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Generation Capacity Replacement rider under recovery (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">4.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">3.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Fuel clause under recoveries</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">39.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Other (A)</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">8.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">5.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:18pt;padding-right:1pt;">Total current regulatory assets</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">12.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">48.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;padding-left:6.75pt;padding-right:1pt;">Non-current:</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Benefit obligations regulatory asset</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">165.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">167.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Deferred storm expenses</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">63.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">65.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Sooner Dry Scrubbers</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">20.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">20.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Smart Grid</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">16.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">18.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Unamortized loss on reacquired debt</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">10.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">10.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Arkansas deferred pension expenses</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">7.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">8.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Pension tracker</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Other</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">14.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">13.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:18pt;padding-right:1pt;">Total non-current regulatory assets</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">300.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">306.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;">REGULATORY LIABILITIES</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Current:</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Fuel clause over recoveries</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">15.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">4.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Reserve for tax refund and interim surcharge (B)</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">4.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">12.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Oklahoma demand program rider over recovery (B)</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">4.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">SPP cost tracker over recovery (B)</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Other (B)</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">5.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">6.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:18pt;padding-right:1pt;">Total current regulatory liabilities</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">30.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">29.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;padding-left:6.75pt;padding-right:1pt;">Non-current:</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;padding-left:1pt;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Income taxes refundable to customers, net</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">890.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">899.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Accrued removal obligations, net</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">319.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">318.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:11.25pt;padding-right:1pt;">Other</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">5.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">5.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:18pt;padding-right:1pt;">Total non-current regulatory liabilities</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">1,216.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">1,223.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;">(A)Included in Other Current Assets in the Condensed Balance Sheets. </div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;">(B)Included in Other Current Liabilities in the Condensed Balance Sheets. </div>Management continuously monitors the future recoverability of regulatory assets. When in management's judgment future recovery becomes impaired, the amount of the regulatory asset is adjusted, as appropriate. If OG&E were required to discontinue the application of accounting principles for certain types of rate-regulated activities for some or all of its operations, it could result in writing off the related regulatory assets or liabilities, which could have significant financial effects.

4600000

3700000

39500000

8200000

5500000

12800000

48700000

165200000

167200000

63900000

65500000

20400000

20600000

16600000

18400000

10400000

10600000

7800000

8000000.0

900000

2300000

14800000

13400000

300000000.0

306000000.0

15600000

4800000

12700000

4400000

2000000.0

2600000

5600000

6900000

30400000

29000000.0

890900000

899200000

319700000

318500000

5500000

5800000

1216100000

1223500000

Accounting Pronouncements<div style="text-align:justify;">Recently Adopted Accounting Standards </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Financial Instruments - Credit Losses. In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Information." The amendments in this update require entities to measure all expected credit losses of financial assets held at a reporting date based on historical experience, current conditions and reasonable and supportable forecasts in order to record credit losses in a more timely manner. ASU 2016-13 also amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. OG&E adopted this standard in the first quarter of 2020 utilizing a modified-retrospective approach and determined the only financial instrument that OG&E currently holds and is required to measure under ASU 2016-13 is its trade receivables. Under this standard, OG&E considers forecasts of future economic conditions in addition to the historical data utilized prior to ASU 2016-13 when measuring the reserve for trade receivables. OG&E evaluated its reserve for trade receivables in light of the new guidance and determined that no adjustment was necessary to the amount recorded as of January 1, 2020.</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. In August 2018, the FASB issued ASU 2018-15, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract." The new guidance aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. OG&E adopted and prospectively applied the new guidance in the first quarter of 2020, which did not have a material effect on the Condensed Financial Statements upon adoption. Beginning in the first quarter of 2020, OG&E records capitalized implementation costs incurred in a hosting arrangement that is a service contract in Other Current Assets and records the related amortization expense in Other Operation and Maintenance in OG&E's Condensed Balance Sheet and Statement of Income, respectively. </div><div> </div><div style="text-indent:36pt;text-align:justify;">Disclosure Framework. In August 2018, the FASB issued ASU 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement" and ASU 2018-14, "Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans." The new guidance removes, adds, modifies or clarifies disclosure requirements that impact all levels of the fair value hierarchy, as well as investments measured using the net asset value practical expedient, and disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans, respectively. OG&E adopted these standards in the first quarter of 2020 and applied the new guidance either retrospectively or prospectively, depending upon the specific disclosure change. ASU 2018-13 and ASU 2018-14 did not have a significant impact on OG&E's financial statement disclosures.</div><div> </div><div style="text-indent:36pt;text-align:justify;">Reference Rate Reform. In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting." The new guidance provides optional expedients and exceptions, if certain criteria are met, for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Contracts modified between March 12, 2020 and December 31, 2022 as a result of reference rate reform are eligible for these expedients and exceptions. OG&E adopted ASU 2020-04 in the first quarter of 2020 and does not expect this standard to have a material impact on OG&E's financial statements.</div>

Revenue Recognition<div style="text-indent:36pt;text-align:justify;">The following table disaggregates OG&E's revenues from contracts with customers by customer classification. OG&E's operating revenues disaggregated by customer classification can be found in "Results of Operations" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations." </div><div style="text-align:center;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:78.409%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:7.795%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:7.796%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Residential</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:0%;">166.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:0%;">191.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Commercial</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">91.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">95.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Industrial</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">41.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">52.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Oilfield</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">38.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">49.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Public authorities and street light</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">34.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">40.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> System sales revenues</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">372.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">428.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Provision for rate refund</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.6)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.1)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Integrated market</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">7.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">6.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Transmission</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">34.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">36.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:middle;padding-left:1pt;padding-right:1pt;">Other</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">7.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-left:1pt;padding-right:0%;">6.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:right;vertical-align:middle;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:6.75pt;padding-right:1pt;">Revenues from contracts with customers</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">420.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">477.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:middle;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div>

166900000

191200000

91300000

95400000

41500000

52300000

38200000

49400000

34700000

40100000

372600000

428400000

-600000

-100000

7200000

6700000

34200000

36100000

7000000.0

6300000

420400000

477400000

Related Party Transactions<div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">OGE Energy charges operating costs to OG&E based on several factors, and operating costs directly related to OG&E are assigned as such. Operating costs incurred for the benefit of OG&E are allocated either as overhead based primarily on labor costs or using the "Distrigas" method, which is a three-factor formula that uses an equal weighting of payroll, net operating revenues and gross property, plant and equipment. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">OGE Energy charged operating costs to OG&E of $37.9 million and $37.0 million during the three months ended March 31, 2020 and 2019, respectively. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Enable provides gas transportation services to OG&E pursuant to an agreement that grants Enable the responsibility of delivering natural gas to OG&E's generating facilities and performing an imbalance service. With this imbalance service, in accordance with the cash-out provision of the contract, OG&E purchases gas from Enable when Enable's deliveries exceed OG&E's pipeline receipts. Enable purchases gas from OG&E when OG&E's pipeline receipts exceed Enable's deliveries. The following table summarizes related party transactions between OG&E and Enable during the three months ended March 31, 2020 and 2019.</div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:78.409%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:7.795%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:7.796%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Operating revenues:</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Electricity to power electric compression assets</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Cost of sales:</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Natural gas transportation services</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">4.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">14.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Natural gas purchases (sales)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">(1.0)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td></tr></table></div>

OGE Energy charges operating costs to OG&E based on several factors, and operating costs directly related to OG&E are assigned as such. Operating costs incurred for the benefit of OG&E are allocated either as overhead based primarily on labor costs or using the "Distrigas" method, which is a three-factor formula that uses an equal weighting of payroll, net operating revenues and gross property, plant and equipment.

37900000

37000000.0

The following table summarizes related party transactions between OG&E and Enable during the three months ended March 31, 2020 and 2019.<table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:78.409%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:7.795%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:7.796%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Operating revenues:</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Electricity to power electric compression assets</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Cost of sales:</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Natural gas transportation services</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">4.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">14.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Natural gas purchases (sales)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">(1.0)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td></tr></table>

3700000

3800000

4700000

14800000

700000

-1000000.0

Fair Value MeasurementsThe classification of OG&E's fair value measurements requires judgment regarding the degree to which market data is observable or corroborated by observable market data. GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value based on observable and unobservable data. The hierarchy categorizes the inputs into three levels, with the highest priority given to quoted prices in active markets for identical unrestricted assets or liabilities (Level 1), and the lowest priority given to unobservable inputs (Level 3). Financial assets and liabilities are classified in their entirety based on the lowest <div style="text-align:justify;">level of input that is significant to the fair value measurement. The three levels defined in the fair value hierarchy are as follows: </div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Level 1 inputs are quoted prices in active markets for identical unrestricted assets or liabilities that are accessible at the measurement date. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Level 2 inputs are inputs other than quoted prices in active markets included within Level 1 that are either directly or indirectly observable at the reporting date for the asset or liability for substantially the full term of the asset or liability. Level 2 inputs include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Level 3 inputs are prices or valuation techniques for the asset or liability that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Unobservable inputs reflect the reporting entity's own assumptions about the assumptions that market participants would use in pricing the asset or liability (including assumptions about risk).</div><div style="text-indent:36pt;text-align:justify;">OG&E had no financial instruments measured at fair value on a recurring basis at March 31, 2020 and December 31, 2019. The following table summarizes the carrying amount and fair value of OG&E's financial instruments at March 31, 2020 and December 31, 2019.</div><div style="text-align:justify;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:50.485%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:10.431%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">December 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2019</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Carrying Amount </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Fair Value</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Carrying Amount </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> Fair Value</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Classification</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Long-term Debt (including Long-term Debt due within one year):</td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Senior Notes</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,050.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,240.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,050.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,500.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Level 2</td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Industrial Authority Bonds</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Level 2</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Tinker Debt</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">10.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000;padding-left:1pt;padding-right:1pt;">Level 3</td></tr></table></div>

<div style="text-indent:36pt;text-align:justify;">Level 1 inputs are quoted prices in active markets for identical unrestricted assets or liabilities that are accessible at the measurement date. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Level 2 inputs are inputs other than quoted prices in active markets included within Level 1 that are either directly or indirectly observable at the reporting date for the asset or liability for substantially the full term of the asset or liability. Level 2 inputs include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Level 3 inputs are prices or valuation techniques for the asset or liability that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Unobservable inputs reflect the reporting entity's own assumptions about the assumptions that market participants would use in pricing the asset or liability (including assumptions about risk).</div>

The following table summarizes the carrying amount and fair value of OG&E's financial instruments at March 31, 2020 and December 31, 2019.<table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:50.485%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:6.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:10.431%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">December 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">2019</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Carrying Amount </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Fair Value</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Carrying Amount </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> Fair Value</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Classification</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Long-term Debt (including Long-term Debt due within one year):</td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Senior Notes</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,050.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,240.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,050.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">3,500.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Level 2</td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Industrial Authority Bonds</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Level 2</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Tinker Debt</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">9.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">10.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000;padding-left:1pt;padding-right:1pt;">Level 3</td></tr></table>

3050700000

3240100000

3050300000

3500400000

135400000

9500000

9700000

9500000

10000000.0

Stock-Based Compensation<div style="text-indent:36pt;text-align:justify;">The following table summarizes OG&E's pre-tax compensation expense and related income tax benefit during the three months ended March 31, 2020 and 2019 related to OGE Energy's performance units and restricted stock units for OG&E employees.</div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:78.409%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:7.795%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:7.796%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Performance units:</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Total shareholder return</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:6.75pt;padding-right:1pt;">Earnings per share</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:11.25pt;padding-right:1pt;">Total performance units</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Restricted stock units</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:11.25pt;padding-right:1pt;">Total compensation expense</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">1.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Income tax benefit</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-right:0%;">0.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:3pt double #000000;border-bottom:1pt solid #000000;padding-right:1pt;"> </td></tr></table></div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">During the three months ended March 31, 2020, OGE Energy purchased 255,000 shares of its common stock at an average cost of $38.04 per share on the open market, and 89,225 of these shares were used during the same period to satisfy payouts of earned performance units and restricted stock unit grants to OG&E employees pursuant to OGE Energy's Stock Incentive Plan. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">During the three months ended March 31, 2020, OGE Energy granted 67,975 performance units (based on total shareholder return over a three-year period) and 22,665 restricted stock units (three-year cliff vesting period) to OG&E employees at $38.03 and $43.69 fair value per share, respectively.</div>

700000

800000

100000

800000

900000

100000

900000

1000000.0

200000

300000

255000

38.04

89225

67975

22665

38.03

43.69

Income TaxesOG&E is a member of an affiliated group that files consolidated income tax returns in the U.S. federal jurisdiction and various state jurisdictions. With few exceptions, OG&E is no longer subject to U.S. federal tax or state and local examinations by tax authorities for years prior to 2016. Income taxes are generally allocated to each company in the affiliated group based on its stand-alone taxable income or loss. Federal investment tax credits previously claimed on electric utility property have been deferred and will be amortized to income over the life of the related property. Additionally, OG&E earns federal tax credits associated with production from its wind facilities. Oklahoma production and investment state tax credits are also earned on investments in electric and solar generating facilities which further reduce OG&E's effective tax rate.

OG&E is a member of an affiliated group that files consolidated income tax returns in the U.S. federal jurisdiction and various state jurisdictions.Income taxes are generally allocated to each company in the affiliated group based on its stand-alone taxable income or loss. Federal investment tax credits previously claimed on electric utility property have been deferred and will be amortized to income over the life of the related property. Additionally, OG&E earns federal tax credits associated with production from its wind facilities. Oklahoma production and investment state tax credits are also earned on investments in electric and solar generating facilities which further reduce OG&E's effective tax rate.

Long-Term Debt<div style="text-indent:36pt;text-align:justify;">At March 31, 2020, OG&E was in compliance with all of its debt agreements. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;">Industrial Authority Bonds</div><div> </div><div style="text-indent:36pt;text-align:justify;">OG&E has tax-exempt pollution control bonds with optional redemption provisions that allow the holders to request repayment of the bonds on any business day. The bonds, which can be tendered at the option of the holder during the next 12 months, are included in the following table. </div><div style="text-align:justify;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:99.707%;"><tr><td style="width:1.0%;"/><td style="width:5.771%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.706%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:5.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:68.821%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:9.731%;"/><td style="width:1.0%;"/></tr><tr><td colspan="9" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Series</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Date Due</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Amount</td></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">(In millions)</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">5.35%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:0%;">Garfield Industrial Authority, January 1, 2025 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">47.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">4.31%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:0%;">Muskogee Industrial Authority, January 1, 2025 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">32.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">5.35%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:0%;">Muskogee Industrial Authority, June 1, 2027 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">56.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="12" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;">Total (redeemable during next 12 months)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">All of these bonds are subject to an optional tender at the request of the holders, at 100 percent of the principal amount, together with accrued and unpaid interest to the date of purchase. The bond holders, on any business day, can request repayment of the bond by delivering an irrevocable notice to the tender agent stating the principal amount of the bond, payment instructions for the purchase price and the business day the bond is to be purchased. The repayment option may only be exercised by the holder of a bond for the principal amount. When a tender notice has been received by the trustee, a third-party remarketing agent for the bonds will attempt to remarket any bonds tendered for purchase. This process occurs once per week. Since the original issuance of these series of bonds in 1995 and 1997, the remarketing agent has successfully remarketed all tendered bonds. If the remarketing agent is unable to remarket any such bonds, OG&E is obligated to repurchase such unremarketed bonds. As OG&E has both the intent and ability to refinance the bonds on a long-term basis and such ability is supported by an ability to consummate the refinancing, the bonds are classified as Long-term Debt in OG&E's Condensed Balance Sheets. OG&E believes that it has sufficient liquidity to meet these obligations.</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;">Issuance of Long-Term Debt</div><div> </div><div style="text-indent:36pt;text-align:justify;">In April 2020, OG&E issued $300.0 million of 3.25 percent senior notes due April 1, 2030. The proceeds from the issuance were added to OG&E's general funds to be used for general corporate purposes, including to fund ongoing capital expenditures and working capital.</div>

<div style="text-indent:36pt;text-align:justify;">OG&E has tax-exempt pollution control bonds with optional redemption provisions that allow the holders to request repayment of the bonds on any business day. The bonds, which can be tendered at the option of the holder during the next 12 months, are included in the following table. </div><div style="text-align:justify;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:99.707%;"><tr><td style="width:1.0%;"/><td style="width:5.771%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.706%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:5.771%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:68.821%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:9.731%;"/><td style="width:1.0%;"/></tr><tr><td colspan="9" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Series</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Date Due</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Amount</td></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">(In millions)</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">5.35%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:0%;">Garfield Industrial Authority, January 1, 2025 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">47.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">4.31%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:0%;">Muskogee Industrial Authority, January 1, 2025 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">32.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">1.00%</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">-</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:center;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">5.35%</td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:0%;">Muskogee Industrial Authority, June 1, 2027 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">56.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="12" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;">Total (redeemable during next 12 months)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">135.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div>

0.0100

0.0535

47000000.0

0.0100

0.0431

32400000

0.0100

0.0535

56000000.0

135400000

300000000.0

0.0325

2030-04-01

Short-Term Debt and Credit Facility <div style="text-indent:36pt;text-align:justify;">OG&E has a $450.0 million revolving credit facility that matures on March 8, 2023. This facility is available to back up OG&E's commercial paper borrowings, to provide revolving credit borrowings and can also be used as a letter of credit facility. At March 31, 2020, there were $0.3 million supporting letters of credit outstanding at a weighted-average interest rate of 1.00 percent. There were no outstanding commercial paper borrowings at March 31, 2020. </div><div style="text-indent:36pt;"> </div><div style="text-indent:36pt;text-align:justify;">At March 31, 2020, there were $265.8 million in advances to OGE Energy compared to $304.8 million at December 31, 2019. OG&E has an intercompany borrowing agreement with OGE Energy whereby OG&E has access to up to $350.0 million of OGE Energy's revolving credit amount. This agreement has a termination date of March 8, 2023. At March 31, 2020, there were no intercompany borrowings under this agreement. </div>OGE Energy's and OG&E's ability to access the commercial paper market could be adversely impacted by a credit ratings downgrade or major market disruptions. Pricing grids associated with OGE Energy's and OG&E's credit facilities could cause annual fees and borrowing rates to increase if an adverse rating impact occurs. The impact of any future downgrade could include an increase in the costs of OGE Energy's and OG&E's short-term borrowings, but a reduction in OGE Energy's and OG&E's credit ratings would not result in any defaults or accelerations. Any future downgrade of OG&E could also lead to higher long-term borrowing costs and, if below investment grade, would require OG&E to post collateral or letters of credit.OG&E must obtain regulatory approval from the FERC in order to borrow on a short-term basis. OG&E has the necessary regulatory approvals to incur up to $800.0 million in short-term borrowings at any one time for a two-year period beginning January 1, 2019 and ending December 31, 2020.

450000000.0

300000

0.0100

265800000 304800000 350000000.0 0 800000000.0

Retirement Plans and Postretirement Benefit Plans<div style="text-align:justify;"> </div><div>Net Periodic Benefit Cost</div><div> </div><div style="text-indent:36pt;text-align:justify;">The following table presents the net periodic benefit cost components, before consideration of capitalized amounts, of OG&E's portion of OGE Energy's Pension Plan, Restoration of Retirement Income Plan and postretirement benefit plans that are included in the Condensed Financial Statements. Service cost is presented within Other Operation and Maintenance, and the remaining net periodic benefit cost components as listed in the table below are presented within Other Net Periodic Benefit Income (Expense) in OG&E's Condensed Statements of Income. OG&E recovers specific amounts of pension and postretirement medical costs in rates approved in its Oklahoma rate reviews. In accordance with approved orders, OG&E defers the difference between actual pension and postretirement medical expenses and the amount approved in its last Oklahoma rate review as a regulatory asset or regulatory liability. These amounts have been recorded in the Pension tracker in the regulatory assets and liabilities table in Note 1 and within Other Net Periodic Benefit Income (Expense) in OG&E's Condensed Statements of Income. </div><div> </div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:48.877%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.115%;"/><td style="width:0.1%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.115%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.753%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Pension Plan</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Restoration of Retirement Income Plan</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Postretirement Benefit Plans</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Service cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">2.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">2.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Interest cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">3.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">4.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">1.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Expected return on plan assets</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(7.1)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(6.6)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Amortization of net loss</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Amortization of unrecognized prior service cost (A)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(1.5)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(1.5)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Settlement cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">10.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Total net periodic benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">1.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">13.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"></td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Plus: Amount allocated from OGE Energy</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:6.75pt;padding-right:1pt;">Net periodic benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">2.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">15.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">0.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">0.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;"></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">(0.6)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;">(A)Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment.</div><div style="text-indent:36pt;text-align:justify;">In addition to the net periodic benefit cost amounts recognized, as presented in the table above, for the Pension and Restoration of Retirement Income Plans for the three months ended March 31, 2020 and 2019, OG&E recognized the following:</div><div style="text-align:justify;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:76.801%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.672%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.527%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;">Increase (decrease) of pension expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">1.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">(1.0)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Deferral of pension expense related to pension settlement charges:</td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:12pt;padding-right:1pt;">Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">11.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000;padding-left:12pt;padding-right:1pt;">Arkansas jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">1.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;margin-top:3pt;">(A)Included in the pension regulatory asset or liability in each jurisdiction, as indicated in the regulatory assets and liabilities table in Note 1. </div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">In addition to the net periodic benefit income amounts recognized, as presented in the table above, for the postretirement benefit plans for the three months ended March 31, 2020 and 2019, OG&E recognized the following:</div><div style="text-align:justify;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:76.654%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.672%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.674%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;padding-right:1pt;">Increase of postretirement expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:0%;">0.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;">(A)Included in the Pension tracker, as presented in the regulatory assets and liabilities table in Note 1. </div><div style="text-align:justify;"> </div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:99.853%;"><tr><td style="width:1.0%;"/><td style="width:76.916%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:8.541%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.543%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Capitalized portion of net periodic pension benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Capitalized portion of net periodic postretirement benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td></tr></table></div>

<div style="text-indent:36pt;text-align:justify;">The following table presents the net periodic benefit cost components, before consideration of capitalized amounts, of OG&E's portion of OGE Energy's Pension Plan, Restoration of Retirement Income Plan and postretirement benefit plans that are included in the Condensed Financial Statements. Service cost is presented within Other Operation and Maintenance, and the remaining net periodic benefit cost components as listed in the table below are presented within Other Net Periodic Benefit Income (Expense) in OG&E's Condensed Statements of Income. OG&E recovers specific amounts of pension and postretirement medical costs in rates approved in its Oklahoma rate reviews. In accordance with approved orders, OG&E defers the difference between actual pension and postretirement medical expenses and the amount approved in its last Oklahoma rate review as a regulatory asset or regulatory liability. These amounts have been recorded in the Pension tracker in the regulatory assets and liabilities table in Note 1 and within Other Net Periodic Benefit Income (Expense) in OG&E's Condensed Statements of Income. </div><div> </div><div style="margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:48.877%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.115%;"/><td style="width:0.1%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:0.1%;"/><td style="width:1.115%;"/><td style="width:0.1%;"/><td style="width:1.0%;"/><td style="width:5.748%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:5.753%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Pension Plan</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Restoration of Retirement Income Plan</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Postretirement Benefit Plans</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Service cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">2.6 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">2.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Interest cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">3.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">4.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">1.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Expected return on plan assets</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(7.1)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(6.6)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Amortization of net loss</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Amortization of unrecognized prior service cost (A)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(1.5)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(1.5)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Settlement cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">10.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:6.75pt;padding-right:1pt;">Total net periodic benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">1.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">13.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"></td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Plus: Amount allocated from OGE Energy</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.5 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">2.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="2" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-left:1pt;padding-right:0%;">(0.2)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:6.75pt;padding-right:1pt;">Net periodic benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">2.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">15.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">0.4 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">0.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td colspan="3" style="background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;padding-right:1pt;"></td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">(0.6)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:0%;">(0.4)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;border-bottom:3pt double #000000;padding-right:1pt;"> </td></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;">(A)Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment.</div><div style="text-indent:36pt;text-align:justify;">In addition to the net periodic benefit cost amounts recognized, as presented in the table above, for the Pension and Restoration of Retirement Income Plans for the three months ended March 31, 2020 and 2019, OG&E recognized the following:</div><div style="text-align:justify;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:76.801%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.672%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.527%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020 </td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019 </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;">Increase (decrease) of pension expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">1.7 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">(1.0)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">Deferral of pension expense related to pension settlement charges:</td><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="background-color:#ffffff;text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:12pt;padding-right:1pt;">Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:0%;">11.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000;padding-left:12pt;padding-right:1pt;">Arkansas jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">1.0 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr></table></div><div style="text-indent:-18pt;padding-left:18pt;text-align:justify;margin-top:3pt;">(A)Included in the pension regulatory asset or liability in each jurisdiction, as indicated in the regulatory assets and liabilities table in Note 1. </div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">In addition to the net periodic benefit income amounts recognized, as presented in the table above, for the postretirement benefit plans for the three months ended March 31, 2020 and 2019, OG&E recognized the following:</div><div style="text-align:justify;margin-bottom:6pt;"><table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:100.000%;"><tr><td style="width:1.0%;"/><td style="width:76.654%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.672%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.674%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:top;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:top;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;padding-right:1pt;">Increase of postretirement expense to maintain allowed recoverable amount in Oklahoma jurisdiction (A)</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:0%;">0.2 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:0%;">0.3 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000;border-bottom:1pt solid #000;padding-right:1pt;"> </td><td colspan="3" style="display:none;"/></tr></table></div>(A)Included in the Pension tracker, as presented in the regulatory assets and liabilities table in Note 1.

2600000

2400000

100000

3400000

4300000

100000

800000

1000000.0

7100000

6600000

400000

-2800000

-100000

-700000

-1500000

-10900000

1700000

13800000

200000

-400000

-200000

500000 2000000.0 200000 100000 -200000 -200000

2200000

15800000

400000

300000

-600000 -400000 1700000 -1000000.0

11200000

-1000000.0

200000 300000 <table style="margin-left:auto;margin-right:auto;border-collapse:collapse;text-align:left;text-indent:0pt;display:inline-table;width:99.853%;"><tr><td style="width:1.0%;"/><td style="width:76.916%;"/><td style="width:1.0%;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="width:1.0%;"/><td style="width:8.541%;"/><td style="width:1.0%;"/><td style="width:1.0%;"/><td style="width:8.543%;"/><td style="width:1.0%;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Three Months Ended</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;"/><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="6" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">March 31,</td><td colspan="3" style="display:none;"/></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:left;vertical-align:bottom;padding-left:1pt;padding-right:1pt;">(In millions)</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2020</td><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:rgb(255,255,255, 0.0);text-align:center;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">2019</td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Capitalized portion of net periodic pension benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.9 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:left;vertical-align:bottom;border-top:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:0%;">0.8 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#cceeff;text-align:right;vertical-align:bottom;border-top:1pt solid #000000;padding-right:1pt;"> </td></tr><tr><td colspan="3" style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;padding-right:1pt;">Capitalized portion of net periodic postretirement benefit cost</td><td colspan="3" style="display:none;"/><td colspan="3" style="display:none;"/><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">— </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:left;vertical-align:bottom;border-bottom:1pt solid #000000;padding-left:1pt;">$</td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:0%;">0.1 </td><td style="padding-top:2px;padding-bottom:2px;background-color:#ffffff;text-align:right;vertical-align:bottom;border-bottom:1pt solid #000000;padding-right:1pt;"> </td></tr></table> 900000 800000 0 100000

Commitments and Contingencies<div style="text-indent:36pt;text-align:justify;">Except as set forth below, in Note 12 and under "Environmental Laws and Regulations" in Item 2 of Part I and in Item 1 of Part II of this Form 10-Q, the circumstances set forth in Notes 14 and 15 to OG&E's Financial Statements included in OG&E's <a href="http://www.sec.gov/ix?doc=/Archives/edgar/data/74145/000007414520000007/oge-20191231.htm" style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">2019 Form 10-K</a> appropriately represent, in all material respects, the current status of OG&E's material commitments and contingent liabilities.</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;margin-bottom:12pt;">Environmental Laws and Regulations</div><div style="text-indent:36pt;text-align:justify;">The activities of OG&E are subject to numerous stringent and complex federal, state and local laws and regulations governing environmental protection. These laws and regulations can change, restrict or otherwise impact OG&E's business activities in many ways, including the handling or disposal of waste material, planning for future construction activities to avoid or mitigate harm to threatened or endangered species and requiring the installation and operation of emissions or pollution control equipment. Failure to comply with these laws and regulations could result in the assessment of administrative, civil and criminal penalties, the imposition of remedial requirements and the issuance of orders enjoining future operations. Management believes that all of its operations are in substantial compliance with current federal, state and local environmental standards. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Environmental regulation can increase the cost of planning, design, initial installation and operation of OG&E's facilities. Management continues to evaluate its compliance with existing and proposed environmental legislation and regulations and implement appropriate environmental programs in a competitive market. </div>OtherIn the normal course of business, OG&E is confronted with issues or events that may result in a contingent liability. These generally relate to lawsuits or claims made by third parties, including governmental agencies. When appropriate, management consults with legal counsel and other experts to assess the claim. If, in management's opinion, OG&E has incurred a probable loss as set forth by GAAP, an estimate is made of the loss, and the appropriate accounting entries are reflected in OG&E's Condensed Financial Statements. At the present time, based on currently available information, OG&E believes that any reasonably possible losses in excess of accrued amounts arising out of pending or threatened lawsuits or claims would not be quantitatively material to its financial statements and would not have a material adverse effect on OG&E's financial position, results of operations or cash flows.

Rate Matters and Regulation<div style="text-indent:36pt;text-align:justify;">Except as set forth below, the circumstances set forth in Note 15 to the Financial Statements included in OG&E's <a href="http://www.sec.gov/ix?doc=/Archives/edgar/data/74145/000007414520000007/oge-20191231.htm" style="background-color:rgb(255,255,255, 0.0);color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration: underline;">2019 Form 10-K</a> appropriately represent, in all material respects, the current status of OG&E's regulatory matters.</div><div style="text-indent:36pt;"> </div><div style="text-align:justify;">Completed Regulatory Matters </div><div style="text-indent:36pt;"> </div><div>Arkansas 2019 Formula Rate Plan Filing </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">OG&E filed its second evaluation report under its Formula Rate Plan in October 2019. On January 29, 2020, OG&E, the General Staff of the APSC and the Office of the Arkansas Attorney General filed a settlement agreement requesting the APSC approve a $5.2 million revenue increase, with rates effective April 1, 2020. The settling parties agreed that the Series I grid modernization projects are prudent in both action and cost and that the Series II grid modernization projects are prudent in action only and the determination of prudence of costs will be reserved until the actual historical costs are reviewed. The settling parties also agreed that OG&E will no longer use projections for the remaining initial term or extension of its current Formula Rate Plan and that all costs will be included for recovery for the first time in the historical year. On February 28, 2020, the APSC approved the settlement agreement.</div><div> </div><div style="text-align:justify;">Pending Regulatory Matters </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Set forth below is a list of various proceedings pending before state or federal regulatory agencies. Unless stated otherwise, OG&E cannot predict when the regulatory agency will act or what action the regulatory agency will take. OG&E's financial results are dependent in part on timely and adequate decisions by the regulatory agencies that set OG&E's rates. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;">FERC Proceedings</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;">Order for Sponsored Transmission Upgrades within SPP </div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Under the SPP Open Access Transmission Tariff, costs of participant-funded, or "sponsored," transmission upgrades may be recovered from other SPP customers whose transmission service depends on capacity enabled by the upgrade. The SPP Open Access Transmission Tariff required the SPP to charge for these upgrades beginning in 2008, but the SPP had not been charging its customers for these upgrades due to information system limitations. However, the SPP had informed participants in the market that these charges would be forthcoming. In July 2016, the FERC granted the SPP's request to recover the charges not billed since 2008. The SPP subsequently billed OG&E for these charges and credited OG&E related to transmission upgrades that OG&E had sponsored, which resulted in OG&E being a net receiver of sponsored upgrade credits. The majority of these net credits were refunded to customers through OG&E's various rate riders that include SPP activity with the remaining amounts retained by OG&E. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Several companies that were net payers of Z2 charges sought rehearing of the FERC's July 2016 order; however, in November 2017, the FERC denied the rehearing requests. In January 2018, one of the impacted companies appealed the FERC's decision to the U.S. Court of Appeals for the District of Columbia Circuit. In July 2018, that court granted a motion requested by the FERC that the case be remanded back to the FERC for further examination and proceedings. In February 2019, the FERC reversed its July 2016 order and November 2017 rehearing denial, ruled that the SPP violated its tariff to charge for the 2008 - 2015 period in 2016, held that the SPP tariff provision that prohibited those charges could not be waived and ordered the SPP to develop a plan to refund the payments but not to implement the refunds until further ordered to do so. In response, in April 2019, OG&E filed a request for rehearing with the FERC, and in May 2019, OG&E filed a FERC 206 complaint against the SPP, alleging that the SPP's forced unwinding of the revenue credit payments to OG&E would violate the provisions of the Sponsored Upgrade Agreement and of the applicable tariff. OG&E's filing requested that the FERC rule that the SPP is not </div><div style="text-align:justify;">entitled to seek refunds or in any other way seek to unwind the revenue credit payments it had paid to OG&E pursuant to the Sponsored Upgrade Agreement. The SPP's response to OG&E's filing agreed that OG&E should be entitled to keep its Z2 payments and argued that the SPP should not be held responsible for those payments if refunds are ordered. Further, the SPP has requested the FERC to negotiate a global settlement with all impacted parties, including other project sponsors who, like OG&E, have also filed complaints at FERC contending that the payments they have received cannot properly be unwound.</div><div style="text-indent:36pt;"> </div><div style="text-indent:36pt;text-align:justify;margin-bottom:8pt;">On February 20, 2020, the FERC denied OG&E's request for rehearing of its February 2019 order, denying the waiver and ruling that the SPP must seek refunds from project sponsors for Z2 payments for the 2008 - 2015 period and pay them back to transmission owners. The FERC also denied the SPP's request for a stay and for institution of settlement procedures. The FERC stated it would not institute settlement procedures unless parties on both sides of the matter requested them. The FERC did not rule on OG&E's complaint or the complaints of other project sponsors, or consider the SPP's refund plan. The FERC thus has not set any date for payment of refunds. On March 2, 2020, OG&E petitioned the U.S. Court of Appeals for the District of Columbia Circuit for review of the FERC's order denying the waiver and requiring refunds. The appeal will likely be heard later this year.</div><div style="text-indent:36pt;text-align:justify;">OG&E cannot predict the outcome of this proceeding based on currently available information, and as of March 31, 2020 and at present time, OG&E has not reserved an amount for a potential refund. If the reversal of the July 2016 FERC order remains intact, OG&E estimates it would be required to refund $13.0 million, which is net of amounts paid to other utilities for upgrades and would be subject to interest at the FERC-approved rate. If refunds were required, recovery of these upgrade credits would shift to future periods. Of the $13.0 million, OG&E would be impacted by $5.0 million in expense that initially benefited OG&E in 2016, and OG&E customers would incur a net impact of $8.0 million in expense through rider mechanisms or the FERC formula rate. </div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">The SPP has recently proposed eliminating Attachment Z2 revenue crediting and replacing it with a different mechanism that would provide project sponsors such as OG&E the same level of recovery they would receive if payments continued under Attachment Z2. The FERC rejected that proposal to the extent it would limit recovery to the amount of the upgrade sponsor's directly assigned upgrade costs with interest, finding that providing the possibility of recovering greater than the cost of the investment could serve as an incentive for entities to build merchant transmission projects. The SPP is allowed to resubmit a proposal without this limited recovery.</div><div> </div><div style="text-align:justify;">APSC Proceedings</div><div> </div><div style="text-align:justify;">Environmental Compliance Plan Rider</div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">In May 2019, OG&E filed an environmental compliance plan rider in Arkansas to recover its investment for the environmentally mandated costs associated with the Sooner Dry Scrubbers project and the conversion of Muskogee Units 4 and 5 to natural gas. The filing is an interim surcharge, subject to refund, that began with the first billing cycle of June 2019. OG&E is reserving the amounts collected through the interim surcharge, pending APSC approval of OG&E's filing. A hearing on the merits was held in December 2019, and parties submitted additional briefs to the APSC in March 2020. The primary question before the APSC is whether a company can utilize an environmental compliance plan rider while also being regulated under a formula rate plan. OG&E is awaiting a final decision from the APSC. </div><div> </div><div>Order Regarding COVID-19 </div><div> </div><div style="text-indent:36pt;text-align:justify;">On April 10, 2020, the APSC issued Order No. 1 related to COVID-19 and the provision of safe, adequate and reliable utility service at just and reasonable rates. Among other things, the APSC ordered the suspension of disconnects during the pendency of the Arkansas Governor's emergency declaration or until the directive is rescinded by the APSC, as well as encouraging reasonable payment arrangements once the prohibition is lifted. The APSC also authorized utilities to establish regulatory assets to record costs resulting from the suspension of disconnections. These regulatory assets will be reviewed in future proceedings for reasonableness. The APSC ordered the General Staff of the APSC to consult with utilities to create a quarterly report to be used to report the costs incurred and saved that have been booked to the regulatory asset. OG&E is monitoring the regulatory activity regarding COVID-19 at the APSC and will consider the request for additional regulatory action by the APSC as needed.</div><div> </div><div style="text-indent:36pt;text-align:justify;">On May 1, 2020, OG&E filed a Request for Additional Actions and Tariff Deviation seeking relief from the Arkansas General Service Rules and OG&E's Terms and Conditions under the tariff, in order to allow for: more flexible deferred payment agreements for all customer classes, suspension of increased deposits due to non-payment and suspension of the removal of customers from certain billing and extended due date plans for late payments. In addition, OG&E requested that incremental expenses, such as additional personal protective equipment, increased sanitation efforts at facilities, implementing health-screening processes and securing temporary facilities for potential sequestration of critical operation personnel, be </div><div style="text-align:justify;">tracked in a regulatory asset. OG&E noted that all possible cost categories are not known currently and reserved the right to file subsequent requests as needed.</div><div> </div><div>OCC Proceedings</div><div> </div><div>Oklahoma Grid Enhancement Plan</div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">On February 24, 2020, OG&E filed an application with the OCC for approval of a mechanism that allows for interim recovery of the costs associated with its grid enhancement plan. The plan includes approximately $800.0 million of strategic, data-driven investments, over five years, covering grid resiliency, grid automation, communication systems and technology platforms and applications. A hearing on the merits is scheduled to begin on July 7, 2020.</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-align:justify;">Oklahoma Retail Electric Supplier Certified Territory Act Causes</div><div style="text-indent:36pt;text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">Certain rural electric cooperative electricity suppliers have filed complaints with the OCC alleging that OG&E has violated the Oklahoma Retail Electric Supplier Certified Territory Act. OG&E believes it is lawfully serving customers specifically exempted from this act and has presented evidence and testimony to the OCC supporting its position. If the OCC were to ultimately find that some or all of the customers being served are not exempted, then OG&E would have to evaluate the recoverability of some plant investments made to serve these customers. OG&E may also be required to reimburse certified territory suppliers for an amount of lost revenue.</div><div> </div><div>OCC Public Utility Division Motion Regarding COVID-19</div><div style="text-align:justify;"> </div><div style="text-indent:36pt;text-align:justify;">On April 28, 2020, the Director of the Public Utility Division filed an application requesting an order from the OCC authorizing action in response to COVID-19. The application requests the OCC to authorize the State's utilities to record as a regulatory asset increased bad debt expenses, costs associated with expanded payment plans, waived fees and incremental expenses that are directly related to the suspension of or delay in disconnection of service beginning March 15, 2020, with the issuance of the Oklahoma Governors' emergency declaration. The application also requests the OCC to allow utilities to defer additional expenses associated with ensuring the continuity of utility service, such as additional personal protective equipment, increased sanitation efforts at facilities, implementing heath-screening processes and securing temporary facilities for potential sequestration of critical operation personnel. The application asks the OCC to consider in future proceedings whether each utility's request for recovery of these regulatory assets is reasonable and necessary and to consider issues such as the incremental bad debt experienced over normal periods, the appropriate period of recovery for any approved amount of regulatory asset, any amount of carrying costs and other related matters. The application is scheduled to be heard by the OCC on May 7, 2020.</div>

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Included in the Pension tracker, as presented in the regulatory assets and liabilities table in Note 1. Included in Other Current Assets in the Condensed Balance Sheets. Included in the pension regulatory asset or liability in each jurisdiction, as indicated in the regulatory assets and liabilities table in Note 1. Unamortized prior service cost is amortized on a straight-line basis over the average remaining service period to the first eligibility age of participants who are expected to receive a benefit and are active at the date of the plan amendment. Included in Other Current Liabilities in the Condensed Balance Sheets.