CONSOLIDATED BALANCE SHEETS - PSO - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS
Cash and Cash Equivalents	$ 202.9	$ 330.1
Accounts Receivable:
Customers	1,100.1	1,029.9
Miscellaneous	64.1	48.7
Total Accounts Receivable	2,631.9	2,447.4
Fuel	748.9	853.7
Materials and Supplies	966.2	1,025.8
Risk Management Assets	210.4	217.5
Accrued Tax Benefits	38.2	156.2
Regulatory Asset for Under-Recovered Fuel Costs	445.9	514.0
Prepayments and Other Current Assets	285.9	274.2
TOTAL CURRENT ASSETS	5,788.8	6,082.1
PROPERTY, PLANT AND EQUIPMENT
Generation	24,829.7	24,329.5
Transmission	38,871.9	35,934.1
Distribution	31,061.9	28,989.9
Other Property, Plant and Equipment	7,491.6	6,484.9
Construction Work in Progress	6,346.9	5,508.0
Total Property, Plant and Equipment	108,602.0	101,246.4
Accumulated Depreciation and Amortization	26,186.4	24,553.0
TOTAL PROPERTY, PLANT AND EQUIPMENT – NET	82,415.6	76,693.4
OTHER NONCURRENT ASSETS
Regulatory Assets	5,129.2	5,092.4
Operating Lease Assets	580.1	620.2
Deferred Charges and Other Noncurrent Assets	3,873.3	3,625.7
TOTAL OTHER NONCURRENT ASSETS	14,873.6	13,908.5
TOTAL ASSETS	103,078.0	96,684.0
CURRENT LIABILITIES
Accounts Payable	2,637.6	2,032.5
Long-term Debt Due Within One Year	3,335.0	2,490.5
Risk Management Liabilities	100.0	229.6
Customer Deposits	454.7	423.7
Accrued Taxes	1,922.1	1,800.1
Accrued Interest	453.3	410.2
Obligations Under Operating Leases	91.9	115.7
Other Current Liabilities	1,490.9	1,251.1
TOTAL CURRENT LIABILITIES	13,009.3	11,583.6
NONCURRENT LIABILITIES
Long-term Debt	39,307.8	37,652.7
Deferred Income Taxes	9,972.4	9,415.7
Regulatory Liabilities and Deferred Investment Tax Credits	8,344.0	8,182.4
Asset Retirement Obligations	3,530.6	2,972.5
Obligations Under Operating Leases	504.3	519.4
Deferred Credits and Other Noncurrent Liabilities	800.6	545.8
TOTAL NONCURRENT LIABILITIES	63,044.8	59,772.0
TOTAL LIABILITIES	76,054.1	71,355.6
Rate Matters (Note 4)
Commitments and Contingencies (Note 6)
COMMON SHAREHOLDER’S EQUITY
Common Stock	3,471.6	3,427.9
Paid-in Capital	9,606.1	9,073.9
Retained Earnings	13,869.2	12,800.4
Accumulated Other Comprehensive Income (Loss)	(3.1)	(55.5)
TOTAL COMMON SHAREHOLDER’S EQUITY	26,943.8	25,246.7
TOTAL LIABILITIES, MEZZANINE EQUITY AND EQUITY	103,078.0	96,684.0
PUBLIC SERVICE COMPANY OF OKLAHOMA
CURRENT ASSETS
Cash and Cash Equivalents	1.8	2.5
Advances to Affiliates	232.0	0.0
Accounts Receivable:
Customers	74.8	107.6
Miscellaneous	0.3	0.8
Total Accounts Receivable	107.7	139.4
Fuel	17.1	33.7
Materials and Supplies	108.8	106.9
Risk Management Assets	20.6	19.0
Accrued Tax Benefits	35.5	31.0
Regulatory Asset for Under-Recovered Fuel Costs	64.7	118.3
Prepayments and Other Current Assets	20.2	18.7
TOTAL CURRENT ASSETS	608.4	469.5
PROPERTY, PLANT AND EQUIPMENT
Generation	2,772.4	2,695.5
Transmission	1,345.3	1,228.3
Distribution	3,698.8	3,450.8
Other Property, Plant and Equipment	550.0	505.9
Construction Work in Progress	378.8	313.7
Total Property, Plant and Equipment	8,745.3	8,194.2
Accumulated Depreciation and Amortization	2,213.0	2,081.9
TOTAL PROPERTY, PLANT AND EQUIPMENT – NET	6,532.3	6,112.3
OTHER NONCURRENT ASSETS
Regulatory Assets	527.8	522.7
Employee Benefits and Pension Assets	73.6	68.4
Operating Lease Assets	106.2	112.8
Deferred Charges and Other Noncurrent Assets	62.0	49.2
TOTAL OTHER NONCURRENT ASSETS	769.6	753.1
TOTAL ASSETS	7,910.3	7,334.9
CURRENT LIABILITIES
Accounts Payable	200.5	159.3
Long-term Debt Due Within One Year	125.6	0.6
Risk Management Liabilities	5.8	28.9
Customer Deposits	72.9	81.4
Accrued Taxes	33.4	30.7
Accrued Interest	33.1	30.7
Obligations Under Operating Leases	10.4	10.1
Other Current Liabilities	78.6	106.2
TOTAL CURRENT LIABILITIES	619.4	559.0
NONCURRENT LIABILITIES
Long-term Debt	2,730.0	2,384.0
Deferred Income Taxes	930.6	831.2
Regulatory Liabilities and Deferred Investment Tax Credits	689.7	765.6
Asset Retirement Obligations	118.8	83.9
Obligations Under Operating Leases	101.9	106.8
Deferred Credits and Other Noncurrent Liabilities	34.3	33.8
TOTAL NONCURRENT LIABILITIES	4,605.3	4,205.3
TOTAL LIABILITIES	5,224.7	4,764.3
Rate Matters (Note 4)
Commitments and Contingencies (Note 6)
COMMON SHAREHOLDER’S EQUITY
Common Stock	157.2	157.2
Paid-in Capital	1,041.2	1,039.3
Retained Earnings	1,483.6	1,374.3
Accumulated Other Comprehensive Income (Loss)	3.6	(0.2)
TOTAL COMMON SHAREHOLDER’S EQUITY	2,685.6	2,570.6
TOTAL LIABILITIES, MEZZANINE EQUITY AND EQUITY	7,910.3	7,334.9
PUBLIC SERVICE COMPANY OF OKLAHOMA | Affiliated Entity
Accounts Receivable:
Affiliated Companies	32.6	31.0
CURRENT LIABILITIES
Advances from Affiliates	0.0	54.4
Accounts Payable	$ 59.1	$ 56.7