CONSOLIDATED EDISON CO OF NEW YORK INC

Con Edison Transmission, through its subsidiaries, develops and invests in electric transmission projects and owns, through joint ventures, both electric and gas assets.

The following table presents Con Edison Transmission’s ownership interests in New York Transco’s electric transmission projects.

(a)TOTS is a group of three electric power bulk transmission projects ($217 million total cost) constructed on the New York bulk transmission system to increase transfer capability between upstate and downstate New York. In December 2025, the FERC approved a settlement agreement that provides a base ROE of 9.99 percent and allows the use of a 54% common equity ratio to calculate the revenue requirement.

(b)The NYES project was constructed to relieve transmission congestion between upstate and downstate (estimated cost of approximately $800 million). Construction of the Dover Station, an additional network upgrade to support the NYES project, was completed during the fourth quarter of 2025. In December 2025, the FERC approved a settlement agreement that provides a base ROE of 9.99 percent and allows the use of a 54% common equity ratio to calculate the revenue requirement.

(c)Includes a cost containment reduction.

(d)Propel NY Energy, a project that is under development jointly with the NYPA, is a 90-mile electric transmission project that is expected to increase high voltage transmission connections between Long Island and the rest of New York State. New York Transco’s share of the estimated cost of the Propel NY Energy project is $2,200 million, excluding interconnection costs and the cost of projects expected to be built by local transmission owners, including CECONY. The siting, construction and operation of the project will require approvals and permits from the appropriate governmental agencies and authorities, including the NYSPSC.