Around Lyon and along the Rhône valley, the region combines a dense industrial base, business zones and strong power generation. It attracts mid-sized data center projects as well as larger ones.
KEY FIGURES
No site in the region is among the June 2026 fast-track sites or the connection-ready zones announced by RTE on 3 July 2026
The standard procedure therefore applies: exploratory study, PTF, connection agreement, with the queue retention rules in force since 2025
WHAT THIS MEANS FOR A PROJECT
Being near a power plant is not enough. Strong regional generation does not guarantee available capacity at the substation nearest the plot. What matters is the substation's hosting capacity, the works required and the projects already queued in the same area.
The RTE and Enedis threshold matters. A project of a few tens of megawatts may connect to the distribution network, with a different procedure and timeline. See Enedis connection for 20 to 30 MW.
WHAT WE DO FOR A PROJECT IN AUVERGNE-RHÔNE-ALPES
The problem. A well-located plot says nothing about the power actually available or the timeline. Capacity published by substation (Capareseau, data.gouv.fr) is a starting point, not an answer: it ignores the queue, the works required and other projects on the same substation.
Our answer. We read public data substation by substation, prepare or check the exploratory study and the PTF request, review a site's connection documents before purchase or financing, and follow the file through to the connection agreement. See grid connection audit, protecting a queue position and verifying a site's power claim.
Who is involved. A high-voltage engineer from our network who has led transmission grid connections, with a lawyer when planning or contracts are at stake. Our commitment is a best-efforts obligation.
Other regions: Île-de-France, Hauts-de-France, Marseille and PACA, Grand Ouest; and the overview by region.
Sources: RTE and Choose France, 1 June 2026; RTE press release, 3 July 2026; RTE common connection procedure in force since 1 August 2025 (in French).
Connection capacity and timelines are assessed substation by substation and file by file. This page is general information as of October 2026; only RTE and Enedis commit to a capacity and a timeline.
FREQUENTLY ASKED QUESTIONS
Is the Rhône valley easier for a data center connection?
Not as a rule. Generation is abundant, but capacity is assessed substation by substation. An exploratory study with RTE or Enedis remains the starting point.
How can I tell whether a substation has capacity?
Public tools (Capareseau, data.gouv.fr) give a first indication. They say nothing about the queue or the works required, so they must be read with care and confirmed with the grid operator.