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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | $ 1.5 | $ 1.1 | $ 32.0 | $ 0.0
Accounts Receivable, after Allowance for Credit Loss, Current | 242.3 | 157.8 |  |
Accrued unbilled revenues | 82.5 | 67.6 |  |
Fuel inventories | (35.0) | (36.5) |  |
Income taxes receivable | 0.5 | 8.1 |  |
Materials and supplies, at average cost | 111.4 | 116.2 |  |
Fuel clause under recoveries | 98.2 | 0.0 |  |
Other | 55.6 | 41.2 |  |
Total current assets | 627.0 | 428.5 |  |
OTHER PROPERTY AND INVESTMENTS |  |  |  |
Investment in unconsolidated affiliates | 478.9 | 397.4 | 376.8 |
Other | 90.8 | 86.7 |  |
Total other property and investments | 569.7 | 484.1 |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |
In service | 13,703.9 | 13,296.7 |  |
Construction work in progress | 249.3 | 145.5 |  |
Total property, plant and equipment | 13,953.2 | 13,442.2 |  |
Less: accumulated depreciation | 4,257.3 | 4,067.6 |  |
Property, Plant and Equipment, Net | 9,695.9 | 9,374.6 |  |
DEFERRED CHARGES AND OTHER ASSETS |  |  |  |
Regulatory assets | 1,264.9 | 415.6 |  |
Other | 20.0 | 16.0 |  |
Total deferred charges and other assets | 1,284.9 | 431.6 |  |
TOTAL ASSETS | 12,177.5 | 10,718.8 | 10,497.6 |
CURRENT LIABILITIES |  |  |  |
Short-term Debt | 383.2 | 95.0 |  |
Accounts payable | 243.5 | 251.5 |  |
Dividends payable | 82.1 | 80.5 |  |
Customer deposits | 80.6 | 81.1 |  |
Accrued taxes | 82.8 | 55.7 |  |
Accrued interest | 42.5 | 40.2 |  |
Accrued compensation | 38.6 | 31.1 |  |
Fuel clause over recoveries | 0.0 | 28.6 |  |
Other | 40.6 | 33.7 |  |
Total current liabilities | 993.9 | 697.4 |  |
LONG-TERM DEBT | 4,495.8 | 3,494.4 |  |
DEFERRED CREDITS AND OTHER LIABILITIES |  |  |  |
Accrued benefit obligations | 175.2 | 231.4 |  |
Deferred income taxes | 1,240.9 | 1,268.6 |  |
Deferred investment tax credits | 11.0 | 10.9 |  |
Regulatory liabilities | 1,247.7 | 1,188.9 |  |
Other | 198.1 | 195.4 |  |
Total deferred credits and other liabilities | 2,872.9 | 2,895.2 |  |
Total liabilities | 8,362.6 | 7,087.0 |  |
COMMITMENTS AND CONTINGENCIES (NOTE 14) |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |
Common stockholders' equity | 1,123.0 | 1,124.6 |  |
Retained earnings | 2,718.3 | 2,544.6 |  |
Accumulated other comprehensive loss, net of tax | (26.3) | (32.1) | (25.7) | (27.9)
Total stockholders' equity | 3,814.9 | 3,631.8 |  |
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 12,177.5 | 10,718.8 |  |
Treasury Stock, Carrying Basis | (0.1) | (5.3) |  |
Accounts Receivable, Allowance for Credit Loss | 2.4 | 2.6 |  |
OG&E [Member] |  |  |  |
CURRENT ASSETS |  |  |  |
Cash and cash equivalents | 1.5 | 0.0 | 32.0 | 0.0
Accounts Receivable, after Allowance for Credit Loss, Current | 242.3 | 156.3 |  |
Accrued unbilled revenues | 82.5 | 67.7 |  |
Advances to parent | 0.0 | 272.0 |  |
Fuel inventories | (35.0) | (36.5) |  |
Materials and supplies, at average cost | 111.4 | 116.2 |  |
Fuel clause under recoveries | 98.2 | 0.0 |  |
Other | 49.4 | 36.9 |  |
Total current assets | 620.3 | 685.6 |  |
OTHER PROPERTY AND INVESTMENTS |  |  |  |
Total other property and investments | 3.9 | 4.1 |  |
PROPERTY, PLANT AND EQUIPMENT |  |  |  |
In service | 13,697.8 | 13,290.6 |  |
Construction work in progress | 249.3 | 145.5 |  |
Total property, plant and equipment | 13,947.1 | 13,436.1 |  |
Less: accumulated depreciation | 4,257.3 | 4,067.6 |  |
Property, Plant and Equipment, Net | 9,689.8 | 9,368.5 |  |
DEFERRED CHARGES AND OTHER ASSETS |  |  |  |
Regulatory assets | 1,264.9 | 415.6 |  |
Other | 19.0 | 15.2 |  |
Total deferred charges and other assets | 1,283.9 | 430.8 |  |
TOTAL ASSETS | 11,597.9 | 10,489.0 |  |
CURRENT LIABILITIES |  |  |  |
Accounts payable | 230.7 | 236.7 |  |
Advances from parent | 42.2 | 0.0 |  |
Customer deposits | 80.6 | 81.1 |  |
Accrued taxes | 76.1 | 53.3 |  |
Accrued interest | 41.3 | 40.2 |  |
Accrued compensation | 28.1 | 22.5 |  |
Fuel clause over recoveries | 0.0 | 28.6 |  |
Other | 40.4 | 33.5 |  |
Total current liabilities | 539.4 | 495.9 |  |
LONG-TERM DEBT | 3,995.9 | 3,494.4 |  |
DEFERRED CREDITS AND OTHER LIABILITIES |  |  |  |
Accrued benefit obligations | 93.5 | 135.4 |  |
Deferred income taxes | 981.5 | 1,020.8 |  |
Deferred investment tax credits | 11.0 | 10.9 |  |
Regulatory liabilities | 1,247.7 | 1,188.9 |  |
Other | 166.5 | 167.1 |  |
Total deferred credits and other liabilities | 2,500.2 | 2,523.1 |  |
Total liabilities | 7,035.5 | 6,513.4 |  |
STOCKHOLDERS' EQUITY |  |  |  |
Common stockholders' equity | 1,571.2 | 1,039.5 |  |
Retained earnings | 2,991.2 | 2,936.1 |  |
Total stockholders' equity | 4,562.4 | 3,975.6 | $ 3,933.8 | $ 3,958.3
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 11,597.9 | $ 10,489.0 |  |

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