EDF signs power purchase agreements for 400 MW solar-plus-storage project

en.Wedoany.com Reported - On August 18, EDF Power Solutions North America signed two 25-year power purchase agreements with NV Energy, covering the generation output and storage services of the Winston Energy solar-plus-storage project in the United States. The project is scheduled to begin supplying power to NV Energy in October 2029 and is currently in the phase of finalizing long-term power purchase agreements and pre-construction preparation.

The Winston Energy project is located on private land in Lyon County, Nevada, and is planned to include a 400 MW AC photovoltaic power plant paired with a 400 MW/1600 MWh battery energy storage system. The storage system can discharge at rated power for four consecutive hours, designed to shift solar generation to evening hours or other periods of higher electricity demand.

The two agreements jointly cover the output of the photovoltaic generation and the associated battery storage system. According to NV Energy's 2026 joint integrated resource plan filing, Winston Solar is listed as a combined solar and battery storage project, with a planned supply period from October 1, 2029, through September 30, 2054, consistent with the 25-year term of the agreements disclosed herein. The project remains subject to obtaining construction permits, interconnection, and other development conditions as required under the agreements.

EDF estimates that the project will generate approximately 1.11 million MWh annually once operational, enough to meet the annual electricity needs of about 100,000 Nevada households. The construction peak is expected to provide more than 400 jobs, and the project is projected to contribute approximately $100 million in tax revenue to the local community over its full lifecycle. The above generation output, household supply figures, and tax revenue data are project developer estimates.

Lyon County planning documents show that the project is located in an existing industrial land area, adjacent to the Walker River substation, allowing it to leverage surrounding transmission infrastructure to connect to the NV Energy grid. The site spans approximately 2,374 acres, and the project has previously entered county-level land use and construction permitting procedures, though no official groundbreaking has been announced to date.

Winston Energy is not the first solar-plus-storage project between EDF and NV Energy. The two parties have previously signed power purchase agreements for the Arrow Canyon and Chuckwalla projects, of which Arrow Canyon features 200 MW of solar PV and 75 MW of storage with a five-hour discharge duration, with the solar portion completed in 2022 and the storage portion commissioned in 2023. The storage capacity of Winston Energy, at 1600 MWh, exceeds that of any previously disclosed individual project between the two parties.