Voltalia launches the construction works of France’s biggest battery storage system

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Voltalia launches the construction of Mana Stockage, a new project made of two storage units using batteries, for a total installed capacity of 10 MW and a usable capacity of 11.3 MWh.

Main winner of the French Commission for Energy Regulation call for projects in 2018, Mana Stockage represents 90% of the storage capacity awarded for French Guiana.

Voltalia expert teams designed the project and will also manage its construction and maintenance. This equipment will benefit from a 10-year remuneration contract starting from the commissioning of the facility, expected early 2020.

The two storage units will address two different issues and came with a precise set of technical specifications and corresponding sizing and design.

The first unit (5 MW/4 MWh) will be used to regulate the frequency of the network: by discharging stored electricity on the network when there is a drop in frequency, due to lower production or a rise in consumption, it will enable the grid operator to stabilize the grid’s frequency.

The second unit (5 MW/7.3 MWh) will be used for daily arbitrage: by storing electricity produced when it is abundant and releasing it during peak consumption in the evening, it will enable to decrease the cost of electricity for the grid operator.

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