Enedis (formerly ERDF)

Enedis completed grid-connection works in September 2024 to directly connect the SEM-REV offshore test site’s electrical grid to the La Baule substation. This upgrade increased the test site’s permitted injection capacity to 10 MW and was presented by Fondation OPEN-C as part of the preparations required to host and energise prototype marine renewable energy units, including the France Atlantique 5 MW floating wind demonstrator. The scope described related to reinforcing and enabling the onshore/offshore electrical interface for the SEM-REV test infrastructure rather than building a dedicated commercial grid connection for the France Atlantique project. By strengthening the link between SEM-REV and the La Baule substation, the works supported the future connection of the demonstrator once it was launched, towed to the test site, and connected to export power via the site’s grid. Fondation OPEN-C also stated that a collaboration with Enedis was underway to develop an offshore electricity production counting system, indicating continuing work on metering and grid-compliance-related systems associated with prototype power injection from SEM-REV-connected assets.