Enedis shifts off-peak hours for 9.3 million customers: different winter and summer windows from 1 December
French distribution grid operator Enedis launches on 1 December the second phase of its reform of off-peak hours (“heures creuses”), covering 9.3 million customers. The windows will differ between winter and summer, so that part of consumption moves to sunny afternoons, when solar output is plentiful.
EuroEnergy Newsroom · 
France · 2 min read
Enedis, the operator of France's electricity distribution grid, has announced that 9.3 million households and business customers will see their off-peak hours shifted according to the season, AFP reports. The second phase of the reform begins on 1 December and, for the first time, introduces different windows in winter and summer.
What changes. Each customer keeps eight off-peak hours a day, including at least five consecutive hours at night. Between 1 November and 31 March, these hours cannot fall between 7:00 and 11:00 or between 17:00 and 21:00; between 1 April and 31 October, the 7:00–10:00 and 18:00–23:00 windows are excluded. Suppliers must notify customers at least one month in advance, and customers have nothing to do, according to Enedis.
Why. “In winter, the night period will largely remain favourable to off-peak hours,” said Timothée Furois, head of Enedis's flexibility programme, quoted by AFP. In summer, solar production makes afternoons a good time to consume. The first afternoon hours of the summer schedule will take effect on 1 April 2027, according to the outlet ECOinfos.
The figures. The first phase, launched in November 2025, brought afternoon off-peak hours to 1.7 million customers and shifted about 1 GW of consumption during the day. With the second phase, Enedis aims to move around 5 GW to the afternoons of the sunny months. In total, about 14.5 million customers have the two-rate option, and the second phase runs until October 2027, according to Selectra and Choisir.com.
Background. The reform was decided by the Energy Regulatory Commission (CRE). The regulated tariff in force since 1 August 2026 is 21.42 euro cents/kWh in peak hours and 15.89 euro cents/kWh in off-peak hours, according to ECOinfos. The system of peak and off-peak hours was created in the 1960s, after the first nuclear power plants, to shift part of consumption to the night.
The country's real-time data are on the country page
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