Securing Network Access
France operates a strict unbundling model. Transmission at high and extra-high voltage is the exclusive responsibility of the French electricity transmission system operator, RTE. Distribution is handled by Enedis and the local distribution companies, all operating under the supervision of the Energy Regulatory Commission (“CRE”), the independent national regulator. All network users benefit from non-discriminatory access rights. As a consequence of the unbundling framework, data centres may not own or operate public network infrastructure. The sole exception, a closed distribution network, is a marginal and rarely used structure in practice.
For sponsors and investors, the principal practical implication is the need to identify and secure a suitable site at a very early stage: specifically, one that is proximate to a RTE or Enedis substation of sufficient capacity for the project’s power requirements. This is particularly important in areas that RTE and the State have already identified as suitable for high-power demand.
Navigating the connection queue
Connection to the network is governed by the French Energy Code, which establishes a right of connection for all users on transparent and non-discriminatory terms. The standard RTE connection procedure comprises the following stages: firstly, a feasibility study (completed within six weeks); secondly, a technical and financial proposal (“PTF”) issued within three months of the feasibility study; thirdly, placement on the connection queue upon acceptance of the PTF, on a first-come, first-served basis; fourth, execution of a connection agreement; and fifth, completion of works and commissioning. Overall delivery timelines vary considerably, depending on the scale of the connection works, the project’s location, and the planning and environmental procedures applicable to the relevant substation and power line infrastructure.
Demand pressure on the queue is very high. Several dozen gigawatts of capacity are already reserved, with the backlog particularly concentrated in Île-de-France. Under the standard procedure, sponsors should plan for connection timelines of seven to ten years. RTE’s fast-track procedure, introduced in 2025, can reduce this to 3 to 4 years for projects above 400 MW, subject to payment of a specific congestion contribution. This is a significant concession that sponsors of large-scale projects should assess carefully against the premium cost.
In principle, the connection application does not require a planning permit to have been obtained at the time of submission. However, the application must contain sufficiently precise and finalised project details to satisfy RTE’s requirements, and any material changes to those details may lead to the applicant losing their position in the queue. The procedure effectively locks in relatively mature projects, so sponsors should not underestimate the degree of design and site certainty required before submitting.
Connection costs follow a split allocation regime. The costs of dedicated connection works are borne by the project. Upstream network reinforcement costs are shared through the network usage tariff (“TURPE”), and recovered from all French consumers. Under the standard regime, the costs resulting from a given connection are in principle borne in full by the first applicant requesting that capacity; cost-sharing between multiple projects is not a general entitlement, but is available under a specific scheme introduced in 2023 for major high-voltage works, which sponsors of large-scale or campus-style developments should investigate at an early stage.
Finally, since 2025, RTE has the authority to reduce a project’s reserved connection capacity where actual power drawn falls materially below the subscribed level. This mechanism is designed to address speculative reservations and free up capacity across the queue. For new installations, this operates either as an immediate full-capacity connection subject to reassessment after five years, or a gradual ramp-up over a minimum of ten years with at least three adjustment points. For existing installations, reserved capacity is recalculated on the basis of the maximum power drawn over the preceding five years, uplifted by 25%. Compensation for capacity reduction is available only for agreements signed before 1 August 2025 and is capped at 60% of residual costs. Sponsors negotiating connection agreements after that date should assume no compensation entitlement and structure their power take-up commitments accordingly.
Demand response, tariff optimisation, and load flexibility
Data centres are not subject to any sector-specific flexibility requirements. However, they may participate in demand response, capacity, and interruptibility schemes, as well as in demand response tenders administered by RTE. Participation across the sector remains limited in practice, although growing grid pressure and RTE’s evolving demand-side strategy make greater engagement increasingly likely over the medium term. For operators able to adjust their load profile, these mechanisms offer a potential route to both tariff savings and improved connection terms, a consideration that sponsors should factor into site selection and operational modelling from an early stage.
Connection contracts are also increasingly incorporating power modulation clauses in exchange for tariff concessions, offering a further lever for managing network costs at high-consumption sites. The network usage tariff, TURPE 7, applicable to the French electricity transmission and distribution networks for the 2025–2028 period, reinforces the price signal during peak periods and typically accounts for 30–40% of the electricity bill. Large, stable consumers may qualify for reductions of up to 80%, subject to conditions that include maintaining an appropriate consumption profile and, for the deepest discounts, holding an ISO 50001 energy management certification.
France has simultaneously completed the roll-out of smart meters, and is significantly increasing grid investment at scale, which will result in a gradual rise in transmission tariffs that should be reflected in financial models from the outset.


