Plus Power develops, owns, and operates battery energy storage systems that enable a more efficient and reliable electric grid.
grid-forming performance by a battery system
GW in development
U.S. states
MW / MWh operating or in construction
Our energy storage projects enhance grid stability by storing excess energy and injecting it back into the grid when it is needed during record peaks, storms, and unexpected demand.
This offers the fastest-dispatch, flexible resources for an aging grid, providing not just energy or capacity but—uniquely—power plant-like grid services at scale.
Fueling a future powered by dependable and innovative energy solutions.
During record summer energy demand and unexpected winter storms, Plus Power’s Rodeo Ranch Energy Storage facility…
Phoenix set a record of 31 straight days of 110-degree temperatures in July 2023, the hottest month ever for a U.S. city. The grid…
Plus Power saw the coming supply shortage early and moved to secure batteries for all its projects coming online…
Plus Power’s battery storage facilities help support America’s energy system by providing capacity needs and grid-forming ancillary services as the U.S. experiences record levels of increasing demand for electric power, seeks to maintain energy dominance, and be the leader in AI deployment.
Plus Power systems help makes the grid more efficient in milliseconds, by smoothing variable generation and reducing congestion when there is too much energy or demand on the grid.
Our industry-leading projects provide targeted solutions for electricity grids across the U.S., solving problems old and new as the grid evolves.
Our stunningly-talented team affords Plus Power unique in-house execution from design to operations. Led by seasoned executives from the energyand battery storage industries, Plus Power’s team is built on a culture of curiosity, respect, and transparency. We apply an intentional mindset to development by prioritizing local relationships, optimal siting considerations, and environmental stewardship.
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During record summer energy demand and unexpected winter storms, Plus Power’s Texas facilities respond in milliseconds to help keep the lights on. They operate year-round: On September 6, 2023, when the grid operator was short of power and grid frequency was falling to unsafe levels, facilities like Gambit Energy Storage also contributed energy and grid services to help avoid rolling blackouts.
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Phoenix set a record of 31 straight days of 110-degree temperatures in July 2023, the hottest month ever for a U.S. city. The grid needs fast flexibility to adapt, namely storage. Plus Power’s 250 MW / 1000 MWh Sierra Estrella Energy Storage project in Avondale has a 20-year contract with Salt River Project (SRP). Sierra Estrella absorbs and holds lower-cost energy until demand rises. The facility serves as critical grid infrastructure to support the adjacent Prime Data Center campus. The facility will also give SRP more experience in dispatching storage. SRP expects storage projects like these to supply more than 10% of its peak-hours electricity demand in 2024, equivalent to around 56,000 homes for up to 4 hours in summer peak conditions.
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Plus Power saw the coming supply shortage early and moved to secure batteries for all its projects coming online by 2025—6.5 MWh worth. Read S&P Global’s insights on the unprecedented volumes of battery storage in development across the U.S. and globe. “Over the next three years, I think we’re in a perpetual short,” said Brandon Keefe, CEO of Houston-based developer Plus Power… “Those who already went out and procured supply are going to have successful projects and those who don’t [have batteries] are going to have issues.”
