First automated grid battery begins operation23 July 2021

French public electricity transmission system operator RTE and Nidec Industrial Solutions (NIS) have inaugurated "Ringo". Located near Dijon, eastern France, Ringo is RTE's first experimental site for the automated management of large-scale electricity storage.

Depending on weather conditions (sun, strong winds), local solar or wind energy production can greatly increase and exceed the transport capacity of the national electricity grid, resulting in the dispersion of the energy produced. The Ringo system makes it possible to store surplus renewable energy during peaks in production and return the stored energy to the grid as and when needed. This prevents having to build new electric lines and the loss of electricity produced from renewable sources thus contributing to reductions in CO2 emissions, without having to use polluting energy sources.

Nidec Industrial Solutions was chosen by RTE to install the first electrical energy storage system on mainland France, used to optimize management of energy flows on the transmission grid. The system makes it possible to better manage the electricity grid, avoiding congestion at times of peak demand. A project that sees battery storage systems become an integral part of modern electricity grids and key elements for realizing the vision of an electric and sustainable future.

The Vingeanne-Jalancourt site, located in a region of high wind energy production, was chosen as the location for one of the experimental batteries with a storage capacity of 12 MW/24MWh, equal to the amount of energy produced by 5 wind turbines or the consumption of 10,000 families. Work commenced in January 2020, and now the system has been put into service, meeting the expected delivery times, despite the difficulties encountered due to the pandemic. The experiment will last three years, the time needed to learn how to manage renewable energy.

Nidec Industrial Solutions is supplying its power electronics converters and the PMS (Power Management System) control system that make it possible to convert stored energy into electricity and use it to feed into the grid supplying consumers. The batteries connected to the grid that make the storage of surplus renewable energy possible are of the NMC (Nickel, Manganese, Cobalt) high energy density lithium-ion type.

Operations Engineer

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