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Electricity and Gas Purchase Agreements (Tables) | 12 Months Ended
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Dec. 31, 2023
Regulated Operations [Abstract] |
Summary of Estimated Capacity and Other Fixed Payments | The future capacity and other fixed payments under the electricity and gas purchase agreements are estimated to be as follows:
(Millions of Dollars) | 2024 |  | 2025 |  | 2026 |  | 2027 |  | 2028 |  | All Years Thereafter
Con Edison |  |  |  |  |  |  |  |  |  |  |
Electricity power purchase agreements | $155 |  | $89 |  | $59 |  | $44 |  | $44 |  | $346
Natural gas | 299 |  | 10 |  | 11 |  | 7 |  | — |  | —
Gas transportation and storage | 521 |  | 486 |  | 460 |  | 409 |  | 301 |  | 2,682
CECONY |  |  |  |  |  |  |  |  |  |  |
Electricity power purchase agreements | 151 |  | 85 |  | 58 |  | 44 |  | 44 |  | 346
Natural gas | 258 |  | 9 |  | 9 |  | 6 |  | — |  | —
Gas transportation and storage | 450 |  | 420 |  | 398 |  | 353 |  | 259 |  | 2,311
Summary of Capacity, Energy and Other Fixed Payments | The company’s payments under the significant terms of the agreements for capacity, energy, gas transportation and storage, and other fixed payments in 2023, 2022 and 2021 were as follows:
| For the Years Ended December 31,
(Millions of Dollars) | 2023 |  | 2022 |  | 2021
Con Edison |  |  |  |  |
Astoria Generating Company (a) | $40 |  | $45 |  | $20
Brooklyn Navy Yard (b) | 134 |  | 165 |  | 139
Gas Transportation and Storage (c) | 372 |  | 386 |  | 393
Total | $546 |  | $596 |  | $552
CECONY |  |  |  |  |
Astoria Generating Company (a) | $40 |  | $45 |  | $20
Brooklyn Navy Yard (b) | 134 |  | 165 |  | 139
Gas Transportation and Storage (c) | 327 |  | 340 |  | 347
Total | $501 |  | $550 |  | $506
(a) Capacity purchase agreements with terms ending in 2023 through 2025. (b) Contract for plant output, which started in 1996 and ends in 2036. (c) Contracts for various counterparties and terms extending through 2044.

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