The Tesla-Nantucket Island – Battery Energy Storage System is a 6,000kW energy storage project located in Island of Nantucket, Massachusetts, US.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2017 and was commissioned in 2019.


The Tesla-Nantucket Island – Battery Energy Storage System is owned by National Grid USA Service (100%), a subsidiary of National Grid.

The key applications of the project are peak shaving and reliable power supply.

Contractors involved

National Grid USA Service and Tesla have delivered the battery energy storage project.

Additional information

The eight-hour duration Tesla-built system will help National Grid meet the Massachusetts island’s summer peak in electricity demand and shore up reliability of service for its customers in the area.


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.