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Summary of Significant Accounting Policies and Other Matters
12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies and Other Matters Summary of Significant Accounting Policies and Other Matters
Principles of Consolidation
The Companies’ consolidated financial statements include the accounts of their respective majority-owned subsidiaries, and variable interest entities (see Note S), as required. All intercompany balances and intercompany transactions have been eliminated.

Accounting Policies
The accounting policies of Con Edison and its subsidiaries conform to generally accepted accounting principles in the United States of America (GAAP). For the Utilities, these accounting principles include the accounting rules for regulated operations and the accounting requirements of the Federal Energy Regulatory Commission (FERC) and the state regulators having jurisdiction.

The accounting rules for regulated operations specify the economic effects that result from the causal relationship of costs and revenues in the rate-regulated environment and how these effects are to be accounted for by a regulated enterprise. Revenues intended to cover some costs may be recorded either before or after the costs are incurred. If regulation provides assurance that incurred costs will be recovered in the future, these costs would be recorded as deferred charges or “regulatory assets” under the accounting rules for regulated operations. If revenues are recorded for costs that are expected to be incurred in the future, these revenues would be recorded as deferred credits or “regulatory liabilities” under the accounting rules for regulated operations.

The Utilities’ principal regulatory assets and liabilities are detailed in Note B. In general, the Utilities are receiving or being credited with a return on their regulatory assets for which a cash outflow has been made, and are paying or being charged with a return on their regulatory liabilities for which a cash inflow has been received. The Utilities’ regulatory assets and liabilities at December 31, 2025 are recoverable from customers, or to be applied for customer benefit, in accordance with rate provisions that have been approved by state regulators.

Other significant accounting policies of the Companies are referenced below in this Note A and in the notes that follow.

Revenues
CECONY’s electric and gas rate plans and O&R’s New York electric and gas rate plans each contain a revenue decoupling mechanism, that covers all residential and most commercial customers, under which the company’s actual energy delivery revenues are compared with the authorized delivery revenues and the difference accrued, with interest, for refund to, or recovery from, customers, as applicable. See “Rate Plans” in Note B.

The NYSPSC requires utilities to record gross receipts tax revenues and expenses on a gross income statement presentation basis (i.e., included in both revenue and expense). The recovery of these taxes is generally provided for in the revenue requirement within each of the respective NYSPSC-approved rate plans. Total excise taxes (inclusive of gross receipts taxes) recorded in operating revenues were as follows:
              For the Years Ended December 31,
(Millions of Dollars)202520242023
Con Edison$464$437$409
CECONY451425396

For information about the Companies' revenue recognition policies, see Note M.

Plant and Depreciation
Utility Plant
Utility plant is stated at original cost. The cost of repairs and maintenance is charged to expense and the cost of betterments is capitalized. The capitalized cost of additions to utility plant includes indirect costs such as engineering, supervision, payroll taxes, pensions, other benefits and an allowance for funds used during construction (AFUDC). The original cost of property is charged to expense over the estimated useful lives of the assets. Upon retirement, the original cost of property is charged to accumulated depreciation. See Note T.

Rates used for AFUDC include the cost of borrowed funds and a reasonable rate of return on the Utilities’ own funds when so used, determined in accordance with regulations of the FERC or the state public utility regulatory authority
having jurisdiction. The rate is compounded semiannually, and the amounts applicable to borrowed funds are treated as a reduction of interest charges, while the amounts applicable to the Utilities’ own funds are credited to other income (deductions). The AFUDC rates for CECONY were 6.2 percent, 5.9 percent and 5.9 percent for 2025, 2024 and 2023, respectively. The AFUDC rates for O&R were 6.0 percent, 6.0 percent and 6.2 percent for 2025, 2024 and 2023, respectively.

The Utilities generally compute annual charges for depreciation using the straight-line method for financial statement purposes, with rates based on average service lives and net salvage factors. The average depreciation rate for CECONY was 3.6 percent for 2025, 2024 and 2023. The average depreciation rates for O&R were 3.3 percent, 3.3 percent and 3.1 percent for 2025, 2024 and 2023, respectively.

The estimated lives for utility plant for CECONY range from 5 to 80 years for electric, 5 to 80 years for gas, 5 to 55 years for steam and 5 to 50 years for general plant. For O&R, the estimated lives for utility plant range from 5 to 75 years for electric and gas and 5 to 50 years for general plant.

The capitalized cost of the Companies' utility plant (net of accumulated depreciation) on December 31, 2025 and 2024, was as follows:
                   Con Edison                CECONY
(Millions of Dollars)2025202420252024
Electric
Generation$597$577$597$577
Transmission5,6005,0725,2234,703
Distribution26,69625,12925,21423,770
General404174404174
Energy Storage7367
Gas (a)13,55812,70312,62911,830
Steam2,0092,0062,0092,006
General2,9743,2492,6572,940
Held for future use77776969
Construction work in progress3,4143,1652,9912,912
Net Utility Plant$55,402$52,152$51,860$48,981
(a) Primarily distribution.
General utility plant of Con Edison and CECONY included $52 million and $49 million, respectively, at December 31, 2025, and $59 million and $56 million, respectively, at December 31, 2024, related to a 2018 acquisition of software licenses. The estimated aggregate annual amortization expense related to the software licenses for Con Edison and CECONY is $7 million. The accumulated amortization for Con Edison and CECONY was $52 million and $50 million, respectively, at December 31, 2025 and $45 million and $43 million, respectively, at December 31, 2024.

Under the Utilities’ rate plans, the aggregate annual depreciation allowance for the period ended December 31, 2025 was $2,350 million, including $2,225 million under CECONY’s electric, gas and steam rate plans that have been approved by the NYSPSC.

Other Deferred Charges and Noncurrent Assets and Prepayments
Other deferred charges and noncurrent assets and prepayments, net of accumulated depreciation, included the following related to implementation costs incurred in cloud computing arrangements:
Con EdisonCECONY
(Millions of Dollars)2025202420252024
Prepayments (a)(b)$68$57$65$54
Other Deferred Charges and Noncurrent Assets (a)(b)279254260243
(a) Amortization on these assets is computed using the straight-line method for financial statement purposes over their estimated useful lives.
(b) Amortization expense related to these assets incurred during the year ended December 31, 2025 for Con Edison and CECONY was $47 million and $46 million, respectively, for the year ended December 31, 2024 for Con Edison and CECONY was $33 million and $32 million, respectively, and for the year ended December 31, 2023 for Con Edison and CECONY was $21 million and $20 million, respectively. Accumulated amortization related to these assets for Con Edison and CECONY was $92 million and $89 million, respectively at December 31, 2025 and was $91 million and $85 million, respectively at December 31, 2024.

Long–Lived and Intangible Assets
The Companies test long-lived and intangible assets for recoverability when events or changes in circumstances indicate that the carrying value of long-lived or intangible assets may not be recoverable. The carrying amount of a long-lived asset or intangible asset with a definite life is deemed not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the assets. In the event a test indicates that such cash flows cannot be expected to be sufficient to fully recover the assets, the assets are considered impaired and written down to their estimated fair value. No material impairment charges were recorded on Con Edison's long-lived assets or its intangible assets with definite lives in 2025, 2024 and 2023.

Recoverable Energy Costs
The Utilities generally recover all of their prudently incurred fuel, purchased power and gas costs, including hedging gains and losses, in accordance with rate provisions approved by the applicable state public utility regulators. If the actual energy supply costs for a given month are more or less than the amounts billed to customers for that month, the difference in most cases is recoverable from or refundable to customers. Differences between actual and billed electric and steam supply costs are generally deferred for charge or refund to customers during the next billing cycle (normally within one or two months). For the Utilities’ gas costs, differences between actual and billed gas costs during the 12-month period ending each August are charged or refunded to customers during a subsequent 12-month period.
New York Independent System Operator (NYISO)
The Utilities purchase electricity through the wholesale electricity market administered by the NYISO. The difference between purchased power and related costs initially billed to the Utilities by the NYISO and the actual cost of power subsequently calculated by the NYISO is refunded by the NYISO to the Utilities, or paid to the NYISO by the Utilities. The reconciliation payments or receipts are recoverable from or refundable to the Utilities’ customers.
Certain other payments to or receipts from the NYISO are also subject to reconciliation, with shortfalls or amounts in excess of specified rate allowances recoverable from or refundable to customers. These include proceeds from the sale through the NYISO of transmission rights on CECONY’s transmission system (transmission congestion contracts).
Temporary Cash Investments
Temporary cash investments are short-term, highly-liquid investments that generally have maturities of three months or less at the date of purchase. They are stated at cost, which approximates market. The Companies consider temporary cash investments to be cash equivalents.
Investments
Accounting for Investments
Con Edison’s investments consist primarily of the investments of Con Edison Transmission that are accounted for under the equity method and the fair value of the Utilities’ supplemental retirement income plan and deferred income plan assets.

The accounting rules require Con Edison to evaluate its investments periodically to determine whether they are impaired. The standard for determining whether an impairment exists and must be recorded is whether an other-than-temporary decline in carrying value has occurred. Changes in economic conditions, forecasted cash flows and the regulatory environment, among other factors, could require equity method investments to recognize a decrease in carrying value for an other-than-temporary decline. When management believes such a decline may have occurred, the fair value of the investment is estimated using market inputs, when observable, or a valuation model such as a discounted cash flow analysis. The fair value is compared to the carrying value of the investment in order to determine the amount of impairment to record, if any.

The evaluation and measurement of impairments involve uncertainties. The judgments that Con Edison makes to estimate the fair value of its equity method investments are based on assumptions that management believes are
reasonable, and variations in these estimates or the underlying assumptions, or the receipt of additional market information, could have a material impact on whether a triggering event is determined to exist or the amount of any such impairment. Additionally, if the projects in which Con Edison holds these investments recognize an impairment, Con Edison may record a share of that impairment loss and would evaluate its investment for an other-than-temporary decline in carrying value as described above.

Investment in Mountain Valley Pipeline, LLC (MVP)
In January 2016, a subsidiary of Con Edison Transmission, acquired a 12.5 percent interest in MVP, a company developing a proposed 300-mile gas transmission project (the Mountain Valley Pipeline) in West Virginia and Virginia. During 2019, Con Edison exercised its right to limit, and did limit, its cash contributions to the joint venture to approximately $530 million, subject to dilution of its ownership interest. In June 2024, the Mountain Valley Pipeline entered service. The project operator is continuing restoration of the right of way and estimates a total project cost of approximately $8,100 million (excluding allowance for funds used during construction (AFUDC)). At December 31, 2025, the carrying value of Con Edison Transmission's investment in MVP was $168 million, and its cash contributions to the joint venture amounted to $530 million. Con Edison records its pro rata share of earnings from its equity investment in MVP, adjusted for accretion of the basis difference and income taxes, on its consolidated income statement. Con Edison's pro rata share of earnings from its equity investment in MVP, adjusted for accretion of the basis difference, was $30 million ($21 million after-tax) for the twelve months ended December 31, 2025.

In January 2026, Con Edison Transmission completed the sale of approximately 40 percent of its approximately 6.6 percent interest in MVP to one of the founding members of MVP and expects to complete the sale of its remaining interest in MVP to another founding member during the first half of 2026 for total aggregate consideration of $357.5 million, subject to certain closing adjustments.


Summary of Investment Balances
The following investment assets are included in the Companies' consolidated balance sheets at December 31, 2025 and 2024:

Con EdisonCECONY
(Millions of Dollars)2025202420252024
Supplemental retirement income plan assets (b)$620$583$598$560
Con Edison Transmission's investment in New York Transco (d)294254
Con Edison Transmission's investment in MVP (a) (d)168166
Deferred income plan assets125116125116
Virginia Tax Equity Interest (c)54
Other1328
Total investments$1,213$1,126$725$684
(a)At December 31, 2025 and 2024, Con Edison Transmission's cash investment in MVP was $530 million. In June 2024, MVP entered service at an overall project cost of approximately $8,100 million excluding allowance for funds used during construction. See "Investment in Mountain Valley Pipeline, LLC (MVP)" above.
(b)See Note E.
(c)See Note S.
(d)At December 31, 2025 and 2024, Con Edison had undistributed earnings from MVP of $121 million and $127 million, respectively, and undistributed earnings from New York Transco of $13 million and $16 million, respectively. Con Edison's pro rata share of earnings from its equity investment in New York Transco, was $29 million ($21 million after-tax) for the twelve months ended December 31, 2025.

Pension and Other Postretirement Benefits
The accounting rules for retirement benefits require an employer to recognize an asset or liability for the overfunded or underfunded status of its pension and other postretirement benefit plans. For a pension plan, the asset or liability is the difference between the fair value of the plan’s assets and the projected benefit obligation. For any other postretirement benefit plan, the asset or liability is the difference between the fair value of the plan’s assets and the accumulated postretirement benefit obligation. The accounting rules generally require employers to recognize all unrecognized prior service costs and credits and unrecognized actuarial gains and losses in accumulated other comprehensive income/(loss) (OCI), net of tax. Such amounts will be adjusted as they are subsequently recognized as components of total periodic benefit cost or income pursuant to the current recognition and amortization provisions.
For the Utilities’ pension and other postretirement benefit plans, regulatory accounting treatment is generally applied in accordance with the accounting rules for regulated operations. Unrecognized prior service costs or credits and unrecognized actuarial gains and losses are recorded to regulatory assets or liabilities, rather than OCI. See Notes E and F.
The total periodic benefit costs are recognized in accordance with the accounting rules for retirement benefits. Investment gains and losses are recognized in expense over a 15-year period and other actuarial gains and losses are recognized in expense over a 10-year period, subject to the deferral provisions in the rate plans.
In accordance with the Statement of Policy issued by the NYSPSC and its electric, gas and steam rate plans, CECONY defers for payment to or recovery from customers the difference between such expenses and the amounts for such expenses reflected in rates. O&R also defers such difference pursuant to its New York rate plans. See Note B.
The Companies calculate the expected return on pension and other postretirement benefit plan assets by multiplying the expected rate of return on plan assets by the market-related value (MRV) of plan assets at the beginning of the year, taking into consideration anticipated contributions and benefit payments that are to be made during the year. The accounting rules allow the MRV of plan assets to be either fair value or a calculated value that recognizes changes in fair value in a systematic and rational manner over not more than five years. The Companies use a calculated value when determining the MRV of the plan assets that adjusts for 20 percent of the difference between fair value and expected MRV of plan assets. This calculated value has the effect of stabilizing variability in assets to which the Companies apply the expected return.
Federal Income Tax
In accordance with accounting rules for income taxes, the Companies have recorded an accumulated deferred federal income tax liability at current tax rates for temporary differences between the book and tax basis of assets and liabilities. In accordance with rate plans, the Utilities have recovered amounts from customers for a portion of the tax liability they will pay in the future as a result of the reversal or “turn-around” of these temporary differences. As to the remaining deferred tax liability, the Utilities had established regulatory assets for the net revenue requirements to be recovered from customers for the related future tax expense pursuant to the NYSPSC's 1993 Policy Statement approving accounting procedures consistent with accounting rules for income taxes and providing assurances that these future increases in taxes will be recoverable in rates.

Accumulated deferred investment tax credits are amortized ratably over the lives of the related properties and applied as a reduction to future federal income tax expense.

Con Edison and its subsidiaries file a consolidated federal income tax return. The consolidated income tax liability is allocated to each member of the consolidated group using the separate return method. Each member pays or receives an amount based on its own taxable income or loss in accordance with a consolidated tax allocation agreement. Tax loss and tax credit carryforwards are allocated among members in accordance with consolidated tax return regulations.

State Income Tax
Con Edison and its subsidiaries file a combined New York State Corporation Business Franchise Tax Return. Similar to a federal consolidated income tax return, the income of all entities in the combined group is subject to New York State taxation, after adjustments for differences between federal and New York law and apportionment of income among the states in which the company does business. Each member’s share of the New York State tax is based on its own New York State taxable income or loss.
Reclassification
Certain prior period amounts have been reclassified to conform with current period presentation.

Earnings Per Share
Con Edison presents basic and diluted earnings per share (EPS) on the face of its consolidated income statement. Basic EPS is calculated by dividing earnings available to common shareholders (“Net income for common stock” on Con Edison’s consolidated income statement) by the weighted average number of Con Edison common shares outstanding during the period. In the calculation of diluted EPS, weighted average shares outstanding are increased for additional shares that would be outstanding if potentially dilutive securities were converted to common stock.

Potentially dilutive securities for Con Edison consist of restricted stock units and deferred stock units for which the average market price of the common shares for the period was greater than the estimated vesting price (see Note O) and its common shares that were subject to a forward sale agreement that settled in March 2025. Before the issuance of common shares upon settlement of the forward sale agreement, the shares were reflected in the company’s diluted earnings per share calculations using the treasury stock method. Under this method, the number of common shares used in calculating diluted earnings per share is deemed to be increased by the excess, if any, of the number of shares that would be issued upon physical settlement of the forward sale agreement over the number of shares that could be purchased by the company in the market (based on the average market price during the period) using the proceeds due upon physical settlement (based on the adjusted forward sale price at the end of the reporting period).
Basic and diluted EPS for Con Edison are calculated as follows:
               For the Years Ended December 31,
(Millions of Dollars, except per share amounts/Shares in Millions)202520242023
Net income for common stock$2,023$1,820$2,519
Weighted average common shares outstanding – basic357.4346.0347.7
Add: Incremental shares attributable to effect of potentially dilutive securities1.31.31.6
Adjusted weighted average common shares outstanding – diluted358.7347.3349.3
Net Income per common share – basic$5.66$5.26$7.25
Net Income per common share – diluted$5.64$5.24$7.21

The computation of diluted EPS for the years ended December 31, 2025 and 2024 excludes immaterial amounts of performance share awards that were not included because of their anti-dilutive effect.

Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Reconciliation of Cash, Temporary Cash Investments and Restricted Cash
Cash, temporary cash investments and restricted cash are presented on a combined basis in the Companies’ consolidated statements of cash flows. At December 31, 2025 and 2024, cash, temporary cash investments and restricted cash for Con Edison were as follows; CECONY did not have material restricted cash balances as of December 31, 2025 and 2024:
At December 31,
Con Edison
(Millions of Dollars)20252024
Cash and temporary cash investments$1,629$1,324
Restricted cash (a)19
Total cash, temporary cash investments and restricted cash$1,630$1,333
(a)Con Edison's restricted cash for the 2024 period primarily included restricted cash of Broken Bow II, which was classified as held for sale as of December 31, 2024. The sale and transfer of Broken Bow II, including the related debt, was completed in January 2025. See Note W and Note X.
Use of Hypothetical Liquidation at Book Value
For certain investments of the Clean Energy Businesses and of Con Edison, Con Edison has determined that the use of HLBV accounting is reasonable and appropriate to attribute income and loss to the tax equity investors. Using the HLBV method, the company's earnings from the projects are adjusted to reflect the income or loss allocable to the tax equity investors calculated based on how the project would allocate and distribute its cash if it were to sell all of its assets for their carrying amounts and liquidate at a particular point in time. Under the HLBV method, the company calculates the liquidation value allocable to the tax equity investors at the beginning and end of each period based on the contractual liquidation waterfall and adjusts its income for the period to reflect the change in the liquidation value allocable to the tax equity investors based on the terms of the partnerships' operating agreements. See Note S. On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses. See Note W.

Assets Held for Sale
Generally, a long-lived asset or business to be sold is classified as held for sale in the period in which management, with approval from the Board of Directors, commits to a plan to sell, and a sale is expected to be completed within one year. Con Edison records assets and liabilities, once held for sale, at the lower of their carrying value or their estimated fair value less cost to sell, and also stops recording depreciation and amortization on assets held for sale.

On March 1, 2023, Con Edison completed the sale of all of the stock of the Clean Energy Businesses (which was classified as held for sale as of December 31, 2022) with the exception of two tax equity interests and one deferred project, Broken Bow II. In January 2025, Con Edison completed the sale and transfer of Broken Bow II to RWE. For further information, see Note W and Note X.

The sale of the Clean Energy Businesses did not represent a strategic shift that had or would have had a major effect on Con Edison, and as such, the sale did not qualify for treatment as a discontinued operation.

For further information, see Note W and Note X.