France Plans to Ease Grid Connection Rules for Solar-Plus-Storage Projects up to 25 MW

FRANCE, October 17, 2026 — France plans to relax grid connection restrictions for solar power projects paired with battery energy storage systems (BESS), allowing installations with total installed capacity of up to 25 MW, compared with the current 17 MW limit, provided that electricity exports to the grid do not exceed 17 MW.

The proposed exemption, expected to be introduced by the end of 2026, forms part of a broader government initiative to accelerate electrification, improve electricity demand flexibility and support the integration of renewable energy into the power system.

Higher Installed Capacity with Controlled Grid Exports

Under the planned arrangement, solar-plus-storage projects will be able to install additional generation and storage capacity without increasing their maximum permitted grid injection above 17 MW.

The measure is designed to facilitate the connection of hybrid renewable energy installations by allowing batteries to store surplus solar generation and manage electricity exports more flexibly. This could help project developers make better use of installed capacity while limiting the impact on the electricity grid.

By separating total installed capacity from the maximum power exported to the grid, the proposed framework could also improve the commercial potential of projects that combine solar generation with battery storage.

Government Pushes for Greater Electricity Flexibility

The grid connection proposal is part of France’s wider efforts to improve flexibility across the electricity system as renewable energy deployment expands.

The government also plans to make greater use of Linky smart meters to manage residential electricity consumption. Although these meters already support certain applications, including the control of domestic hot-water systems, the government believes their broader flexibility potential remains underused.

In addition, France is exploring electricity supply products that better reflect the daily profile of solar generation, which typically peaks around midday and declines in the late afternoon. The initiative aims to encourage consumers to shift electricity use toward periods when solar power is more readily available.

Implications for France’s Solar and Storage Market

The proposed exemption could create additional opportunities for developers of utility-scale and commercial solar-plus-storage projects in France. By enabling higher installed capacity while maintaining a controlled grid export limit, the policy may encourage greater deployment of batteries alongside solar generation.

Energy storage can help manage fluctuations in renewable output, improve the alignment between generation and consumption, and provide greater flexibility to the power system.

However, the measure remains subject to implementation. Its actual impact will depend on the final regulatory arrangements, grid connection conditions and the economics of individual projects.

As France continues to advance electrification and renewable energy integration, the proposed change signals a growing policy focus on battery storage as a tool for improving grid flexibility and making better use of solar power.