CONSOLIDATED EDISON INC

CECONY monitors the adequacy of the electric capacity resources and related developments in its service area, and works with other parties on long-term resource adequacy within the framework of the NYISO reliability planning process.

In 2019, the New York State Department of Environmental Conservation issued regulations (Peaker Rule) that may require the retirement or seasonal unavailability of fossil-fueled electric generating units owned by CECONY and others in New York City. The Peaker Rule limits nitrous oxides emissions during the ozone season from May through September and affects older peaking units that are generally located downstate and needed during periods of high electric demand or for local reliability purposes. Compliance with the Peaker Rule would impact approximately 1,700 MW (nameplate capacity) of generating units in CECONY's service territory (including 70 MW owned by CECONY), of which approximately 989 MW (including 70 MW owned by CECONY) have since been retired or limited operation. An additional 709 MW (in nameplate capacity) of peaker plants were expected to become unavailable beginning May 1, 2025. In July 2023, the NYISO found an electric reliability need beginning in the summer of 2025 in CECONY’s New York City territory primarily driven by forecasted increases in peak demand and the unavailability of units impacted by the Peaker Rule. In November 2023, after soliciting and evaluating both regulated and market-based solutions, the NYISO determined that there were no viable and sufficient solutions submitted that meet the reliability need in 2025. As a result, the NYISO stated that it will temporarily retain 672 MW of the remaining units impacted by the Peaker Rule until May 2027 to ensure the continued reliability of electric service in New York City.

In January 2021, CECONY updated its Local Transmission Plan to address identified reliability needs on its local system resulting from the Peaker Rule through the construction of three transmission projects, the Reliable Clean City (RCC) projects. In April 2021, the NYSPSC approved CECONY’s December 2020 petition to recover $780 million of costs to construct the RCC projects. In May 2023, the first of the three RCC projects was completed and placed in service; the remaining two are expected to be completed in 2025.

In April 2023, the NYSPSC approved CECONY’s December 2022 petition seeking cost recovery approval for a proposed clean energy hub in Brooklyn, New York (Brooklyn Clean Energy Hub) at an estimated cost of $810 million and an estimated in-service date of December 2027, that is in addition to the capital expenditures approved in CECONY's 2023 electric rate plan. The Brooklyn Clean Energy Hub primarily addresses an identified reliability need in 2028 due to a forecasted increase in electric demand. The Brooklyn Clean Energy Hub also provides the flexibility for offshore wind resources to interconnect to it during construction and after it commences operation. Construction began in September 2023 and is expected to be completed by 2028.

In January 2024, the NYSPSC approved CECONY's August 2023 petition requesting authorization and cost recovery to construct two new substations in Jamaica, Queens (the Reliable Clean City - Idlewild Project) that is in addition to the capital expenditures approved in CECONY's 2023 electric rate plan. The project is expected to be completed by May 2028 to meet anticipated reliability needs and to support New York State’s goals set forth in the Climate Leadership and Community Protection Act (CLCPA). CECONY estimates that construction will cost $1,200 million.

Capital expenditures approved in CECONY’s 2023 electric rate plan to address identified reliability needs in New York City include CECONY’s projects to: transfer electric customers from its Brownsville substation to its Glendale substation (estimated completion in 2026 and estimated cost of $115 million); build a transmission feeder between

Vernon and Newtown (estimated completion in 2026 and estimated cost of $125.4 million); and build the Gateway Park area substation (estimated completion in 2028 and estimated cost of $1,100 million).