160 MW / 640 MWh Arizona Energy Storage System Announced - CleanTechnica

Fluence Energy, Inc. and Torch Clean Energy have announced the Winchester project, a solar-plus-storage facility in Cochise County, Arizona, expected to be operational by early 2027. The project includes a 160 MW solar power capacity paired with a 160 MW / 640 MWh battery energy storage system using Fluence’s Gridstack Pro 5000 technology. This system will be located alongside two 80 MW solar arrays and is designed to support grid balancing, accommodate forecasted load growth, and promote economic development and infrastructure investment in the region. The solar portion alone could provide electricity for approximately 26,880 homes during adequate sunshine, based on national averages. The Gridstack Pro 5000 battery system is optimized for density, deployment speed, performance, and safety. Additionally, the project benefits from federal incentives under the Inflation Reduction Act and the One Big Beautiful Bill Act, which maintain tax credits for energy storage projects and domestic manufacturing of battery components, supporting grid reliability and U.S