NWJ MET
A battery of 1.57 MW and 0.78 MWh in Écommoy, on Enedis’s distribution grid, in service since 19 December 2022. Every fact below is the national register’s own, and a field not shown is one the register leaves blank.
In the national register
| Power | 1.57 MW |
| Energy | 0.78 MWh |
| Hours at full power | 0.5 |
| Charging power | 1.25 MW |
| In service | 19 December 2022 |
| Commune | Écommoy, Sarthe, Pays de la Loire |
| Network | Enedis, HTA |
| Substation it connects through | Ecommoy (ECOMM) |
| Placed on the map | at the distribution substation it connects through (Ecommoy), from Caparéseau |
| EIC code | 17W0000014576025 |
The company
This battery is filed under the name of a company, NWJ MET (SIREN 843082389), registered 29 August 2018 with its seat in Paris. The company register lists its officers as:
- FORVIS MAZARS SA, Commissaire aux comptes titulaire (SIREN 784824153)
- NW JOULES, Président de SAS (SIREN 837871409)
The company register as read by recherche-entreprises.api.gouv.fr on 20 October 2026, Licence Ouverte. Officers are not owners: a company’s president is usually its parent company, but the register of shareholders is not public.
What is not published
Who owns this battery, who trades its power, and what it earns: the register carries none of these, and no French body publishes a battery’s metered output or the instructions RTE gives it.
Source: Registre national des installations de production et de stockage d’électricité, register of 31 August 2026, on ODRÉ, Licence Ouverte 2.0. Substation positions from Caparéseau.