Tesla and Harmony Energy to Build France’s Largest Battery System

Project chevire mockup

Tesla and Harmony Energy are set to build France’s largest battery energy storage system (BESS) using Megapack technology.

The Cheviré battery project, located in Nantes Saint-Nazaire Harbour, will feature a 100 MW / 200 MWh storage unit, capable of powering 170,000 homes for two hours. Construction is set to begin soon, with the system expected to be fully operational by winter 2025.

“Developing and operating vital battery energy storage facilities across France, will lead to enhanced energy security, more affordable energy bills, and the decarbonisation of the grid. We are excited to commence building works on our first project,” said Harmony Energy CEO for France Andy Symonds, in a statement to Tesla North.

Harmony energy france

“It’s an exciting location given the historical importance of the fossil-fuel coal power station, but looking ahead, the delivery of the Cheviré BESS will transform the site into exactly the opposite, facilitating the green electrification of the French energy system, whilst offsetting several hundred thousand tons of CO2,” added Harmony Energy COO for France Clément Girard.

Harmony Energy has a history of developing Europe’s three largest BESS projects using Tesla Megapack technology, integrating biodiversity initiatives, community funds, and advanced technology in its designs.

In Q2, Tesla’s energy business hit an all-new record and from projects like these, it’s no surprise the company continues to be the reliable choice for nations seeking to get a BESS going.