The Black Walnut Battery Energy Storage System is a 15,000kW energy storage project located in Santa Paula, California, US. The rated storage capacity of the project is 60,000kWh.
The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2020 and will be commissioned in 2022.
Description
The Black Walnut Battery Energy Storage System is being developed by esVolta. The project is owned by esVolta (100%).
The key applications of the project are ancillary services and load following.
Contractors involved

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By GlobalDataesVolta is the owner. esVolta is the developer.
Additional information
The Black Walnut project was selected by California Choice Energy Authority (CalChoice), a hybrid joint powers authority made up of five operational community choice aggregations (CCAs) in the cities of Lancaster, Pico Rivera, Rancho Mirage, San Jacinto, and the Town of Apple Valley, California, to provide incremental resource adequacy to help ensure sufficient capacity to meet anticipated load growth for each member CCA. The project will also provide an array of energy and ancillary services to the electric grid, facilitating California’s transition to a cleaner and more resilient electric system.
About esVolta
esVolta (esVolta) is a developer, owner and operator of utility-scale energy storage projects that develops a large pipeline of future storage projects. esVolta is headquartered in Aliso Viejo, California, the US.
Methodology
All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.