CONSOLIDATED EDISON INC

CECONY’s capitalized costs for utility plant, net of accumulated depreciation, for distribution facilities were $23,770 million and $23,238 million at December 31, 2024 and 2023, respectively. For its transmission facilities, the costs for utility plant, net of accumulated depreciation, were $4,703 million and $4,333 million at December 31, 2024 and 2023, respectively, and for its portion of the steam-electric generation facilities, the costs for utility plant, net of accumulated depreciation, were $577 million and $580 million, at December 31, 2024 and 2023, respectively. See "CECONY – Steam Operations – Steam Facilities," below.

Distribution Facilities

CECONY owns 63 area distribution substations and various distribution facilities located throughout New York City and Westchester County. At December 31, 2024, the company’s distribution system had a transformer capacity of 32,496 MVA, with 37,935 miles of overhead distribution lines and 98,898 miles of underground distribution lines. The underground distribution lines represent the single longest underground electric delivery system in the United States.

Transmission Facilities

CECONY’s transmission facilities are located in New York City and Westchester, Orange, Rockland, Putnam and Dutchess counties in New York State. At December 31, 2024, the company owned or jointly owned 490 miles of overhead circuits operating at 138, 230, 345 and 500 kV and 760 miles of underground circuits operating at 69, 138 and 345 kV. The company’s 40 transmission substations and 63 area stations are supplied by circuits operated at 69 kV and above. CECONY’s transmission facilities interconnect with those of National Grid, Central Hudson Gas & Electric Corporation, O&R, New York State Electric & Gas, Eversource Energy, Long Island Power Authority, NYPA, New York Transco and Public Service Electric and Gas Company.

Generating Facilities

CECONY’s electric generating facilities consist of plants located in Manhattan whose primary purpose is to produce steam for the company's steam business and also co-produce electricity. The facilities have a combined electric nameplate capacity of approximately 634 MW. The company expects to have sufficient amounts of gas and fuel oil available in 2025 for use in these facilities.