Energy storage system

The project, in French Guyana in the township of Mana, involves two battery storage units with a total useful capacity of 11.3 MWh for a power conversion of 10 MW. The two Mana Storage units are intended to reinforce the electricity grid in Guyana and to respond to two distinct challenges.

Voltalia, an international player in renewable energies, entrusted us with the construction of these two units.

The first unit (5 MW/4 MWh) is used for frequency regulation: by discharging into the grid the energy stored during a frequency drop, related to a drop in production or to an increase in consumption, it allows the grid manager to stabilise the grid frequency.

The second unit (5MW/7.3MWh) meets the need of daily arbitrage: by storing electricity produced during a period of abundant production and discharging it during peak consumption in the evening, it allows the grid manager to save on the cost of electricity.

Both systems were built and assembled in the Entech production site in Quimper. They were brought by ship to Guyana where Entech performed the commissioning.
Entech SE has been entrusted with the maintenance and operation of these systems.