Réseau Transport d’Électricité (RTE), the French electricity transmission operator, has launched a tender to appoint a broker for the sale of three battery storage sites developed under its so-called RINGO project.

The initiative, which began in 2016, was designed to test the use of stationary storage to manage local congestion on the high-voltage network.

The assets are connected directly to the French transmission grid and were deployed at locations identified as vulnerable to short-term transit constraints caused by rapid growth in wind and solar generation.

The three sites have a combined installed power of between 10 MW and 12 MW per site and energy storage capacities ranging from 24 MWh to 33 MWh.

The Bellac site, commissioned in June 2023, offers 10 MW of useful power and 26 MWh of storage at a voltage level of 90 kV. The Jalancourt site, operational since June 2021, provides 12 MW and 33 MWh at 63 kV. Ventavon, commissioned in September 2023, delivers 10 MW and 25 MWh at 63 kV.

Each facility includes control and communication systems integrated with RTE’s information chain, power electronics, and voltage conversion equipment.

The French energy regulator CRE ruled in December 2017 that these assets must be sold following completion of the experimental phase.

The broker’s role will include managing the sale process for all three sites, which will conclude upon signing a notarised deed of sale, a Transport Network Access Contract (CART), and an operating agreement for each location.

Remuneration for the selected broker will be partly indexed to the final sale price.

Applications from interested advisers must be lodged February 6 2026.

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