France reserved nearly 18 GW of grid capacity for roughly 80 data center projects as of May 2026 (RTE). Where that capacity actually sits — and how long a real connection takes — varies enormously by region. Pick a region below.
These pages explain grid connection for large loads in France, region by region: who connects a site (Enedis at HTA, or RTE at HTB above roughly 40 MW), where the transmission network is under pressure, and what that means for data centers and battery storage. Regional context is a starting point, not an answer: the capacity actually available at a substation, and the date it can be delivered, are only known through RTE's own studies. See our grid connection glossary, which grid document actually secures a site and our land assessment for data centers.
La France avait réservé près de 18 GW de capacité réseau pour environ 80 projets de data centers en mai 2026 (RTE). Où se trouve réellement cette capacité — et combien de temps prend un vrai raccordement — varie énormément selon la région. Choisissez une région ci-dessous.