Pivot Power has confirmed Southampton will be its first location for a 49.9MW battery storage project.
It plans to connect an EV charging hub to the battery, using the same connection, when it finds a suitable charging site and subject to planning.
With permission from Test Valley Borough Council secured for the first site, Pivot Power expects the battery to be operational by July 2019, and said it intends to submit a separate planning application for another project in the same area. When EV charging infrastructure is added to the batteries, both will capable of quickly charging up to 100 cars simultaneously.
The firm, which intends to connect direct to the transmission system, said it will build the battery on a 1.6-acre plot on National Grid land and inside its secure perimeter. Construction is expected to start in March.
Pivot Power aims to have operational 50MW batteries at 10 sites within 18 months and 45 within five years.