The Morgan Hill-Hummingbird Battery Energy Storage System is a 75,000kW energy storage project located in Morgan Hill, California, US. The rated storage capacity of the project is 300,000kWh.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2018 and will be commissioned in 2021.


The Morgan Hill-Hummingbird Battery Energy Storage System is being developed by esVolta. The project is owned by esVolta (100%).

The key applications of the project are frequency regulation and grid support services.

Contractors involved

esVolta is the owner. esVolta is the developer.

Additional information

The project is a part of PG&E‘s cost-effective energy storage projects totaling approximately 567 MW, requested approval in a filing at the California Public Utilities Commission (CPUC). esVolta will be in charge of developing, building and operating the facility, which will provide both capacity resource for PG&E and energy and ancillary services to California’s power grid.

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.


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.