The Holes Bay Battery Energy Storage System is a 7,500kW energy storage project located in Holes Bay, Dorset, England, UK.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was commissioned in 2020.


The Holes Bay Battery Energy Storage System was developed by Fotowatio Renewable Ventures and Harmony Energy. The project is owned by Harmony Energy (100%).

The key applications of the project are renewable energy integaration and peak shaving.

Contractors involved

Fotowatio Renewable Ventures, Harmony Energy and Tesla have delivered the battery energy storage project.

Additional information

The project uses six Tesla Megapack, lithium-ion batteries with a capacity of 15MWh that are connected to the Southern Electric Power distribution network. They will provide the capability to store energy from renewable sources and afford peak-time flexibility to the UK National Grid.

About Fotowatio Renewable Ventures

Fotowatio Renewable Ventures BV (FRV), a subsidiary of Abdul Latif Jameel Energy and Environmental Services, is a provider of renewable energy solutions. It offers engineering, procurement and construction (EPC), operation, maintenance, administrative, technical and legal consulting services. The company’s project portfolio comprises of montna farms, nellis air force base, potosi solar, rothenbach solar park, brook warehouse, la jacinta, olmedilla, mafraq-I and lilyvale among others. It develops, constructs, finances, operates, and manages solar energy projects across the countries. FRV caters services to construction, technology, power and investment firms. The company has operational presence in Australia, India, Italy, Jordan, Uruguay, Spain, Mexico and the US. FRV is headquartered in Madrid, Spain.


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.