TURPE 7 and batteries: what changes for an equipped site

TURPE 7 and batteries: on a site that consumes electricity, France's grid tariff has no rate grid of its own for storage. The battery acts on what the meter sees, the power drawn and the energy withdrawn in each time band. This article sets out what TURPE 7 HTA-BT changes for an equipped site, using the Enedis tariffs in force on 1 August 2026, and how to take it into account when sizing.

What is TURPE 7 and since when has it applied?

TURPE is the tariff for the use of public electricity grids, set by the French energy regulator (CRE). TURPE 7 HTA-BT came into force on 1 August 2025 for around four years (decision no. 2025-78 of 13 March 2025). Its grid is indexed each year: it moved by 3.04% on 1 August 2026 (decision no. 2026-105 of 21 May 2026).

For a professional site, three of its components matter when studying a battery:

• the annual withdrawal component, made up of a power part and an energy part, per time band;
• the monthly component for exceeding subscribed power (CMDPS);
• the annual injection component, which is zero in HTA and low voltage.

How does TURPE 7 see a battery on a consuming site?

The Enedis brochure sets the principle: the tariff depends on the voltage level, the subscribed power and the physical flows measured at the connection point. For the grid, a battery installed behind the meter exists only through what it changes in those flows.

Two points are checked from the study stage. The battery's losses are withdrawn like the rest of the energy when it charges from the grid. And recharging can create its own peak: it is controlled below the subscribed power of the current band.

What are the time bands worth in the grids of 1 August 2026?

The grid shows the gap that control can target. Here are two extracts, for short and long utilisation. These are network tariffs, excluding supply and taxes: the total price per kWh also depends on the supply contract.

HPH, HCH: peak-rate and off-peak hours in the high season (currently November to March). HPB, HCB: peak-rate and off-peak hours in the low season. Source: Enedis brochure, tariffs at 1 August 2026.

The reading is instructive. Long utilisation weighs mainly on power: lowering a peak counts for more there. Short utilisation weighs more on energy: shifting kWh plays a larger part. A battery changes both terms at once, so the tariff option is reviewed with the battery, on the projected load curve. The free switching window opened by TURPE 7 closed on 31 January 2026, so the 12-month period since the last choice of option has to be checked.

Subscribed powers must also keep rising from one band to the next: a low power in low-season off-peak hours is only possible if the preceding bands are low too. That is why peak shaving is studied band by band, as in our article on exceeding subscribed power.

Why do the moved off-peak hours change battery control?

This is the most concrete change for an equipped site. The CRE decided to move off-peak hours towards the afternoon, when solar generation is abundant from April to October. The reform runs from autumn 2025 to the end of 2027, and the aim is for the great majority of customers to have afternoon off-peak hours, all year or in summer. Enedis estimates that 0.5 million points are concerned in LV above 36 kVA and in HTA (decision no. 2025-78).

Decision no. 2026-33 of 4 February 2026 clarified the placement rules:

The same decision lifts the freeze that prevented new customers from being given off-peak hours between 11 am and 2 pm in the high season.

For a battery, the consequence is practical: a fixed "charge at night, discharge by day" programme may stop following the grid when the site's bands change. The control system has to read the actual calendar of the delivery point. A site with a solar plant also sees its off-peak hours move closer to its generation hours: solar surplus and grid recharging end up in the same slots, and the battery's energy is sized with both in mind.

Who is the injection-withdrawal component for?

This is what TURPE 7 brings that is new for storage, applicable since 1 August 2026. It is optional and replaces the standard withdrawal component. It encourages operation that runs counter to local grid peaks. It is not for every site with a battery: the Enedis note sets three cumulative conditions.

1. Being standalone storage, which withdraws from and returns to the public grid exclusively. An installation coupled with generation or consumption is excluded.
2. Being connected directly in HTA in the Enedis service area.
3. Being attached to a primary substation on the list of eligible zones.

In October 2025 the CRE published a list of 320 injection zones and 1,121 withdrawal zones in HTA; Enedis publishes the up-to-date list with its note.

A negative coefficient reduces the network bill, without being able to make it negative over the calendar year. For a standalone storage developer, the study therefore starts with the target substation, and with how well these hours fit the battery's other uses, such as the services described in our article on how a battery earns revenue or on our aggregator page.

What if the site also generates electricity?

An individual self-consumer follows the same withdrawal rules as other consumers. Their management component depends on the contract: self-producers who feed in have a specific component, lower than the sum of the components of an injection contract and a withdrawal contract.

In collective self-consumption, the management component is increased, and an optional grid distinguishes self-produced and other withdrawals when all participants are downstream of the same HTA/LV substation. A battery in this setting is studied with the operation's allocation rules: our article on collective self-consumption and storage covers this point.

How do you build TURPE 7 into sizing a battery?

The method has five steps, with no result assumed in advance:

1. Gather the data: twelve months of load curve, network bills, the contract, current and upcoming off-peak bands.
2. Identify the main lever: peaks and overruns, the gap between bands, solar surplus. Each site has its own.
3. Simulate the curve with the battery, charging and losses included, on the actual calendar of the delivery point.
4. Recalculate TURPE by option, short and long utilisation, with subscribed powers adjusted band by band.
5. Test the future calendar: a properly sized system should stay relevant when off-peak hours move, which argues for configurable control.

The range is then chosen according to the power and energy selected. A VenturePro cabinet delivers 125 kW and stores 250 kWh (RelyEZ datasheet). The Fusion 2 range runs from 261 kWh and 130.6 kW to 3.34 MWh, with one control cabinet and up to eight battery cabinets.

TURPE is only part of the bill and only part of a battery's value: the study combines it with supply and the site's other uses. To compare these options on your own data, you can request a diagnostic with your load curve and network bills.