Wedoany.com Report-Jun 6, Storio Energy, a French company focused on energy storage and management for businesses, reported that in May 2025, electricity prices on France’s spot market frequently reached zero or negative levels. The company noted that 90% of days in May had minimum prices at or below zero, with only three days averaging slightly positive prices up to €3.50/MWh.

The trend is largely due to excess solar power production during midday hours exceeding demand. Jean-Yves Stephan, Storio Energy’s CEO and co-founder, stated: “We are facing a real energy turning point. Consumers still have little or no incentive to shift their consumption to these very advantageous hours.” He highlighted the potential for businesses to benefit by adapting to these low-price periods.

For the first time, average prices were negative during a six-hour period from 11 a.m. to 5 p.m. (CEST) in May. On May 1 at 2 p.m., the spot price hit -€118/MWh, the second-lowest recorded in France. To align supply and demand, about 11 million of 14.5 million households with peak/off-peak plans—roughly 40%—will see up to three off-peak hours shifted to daytime between 11 a.m. and 5 p.m. this summer.

Price volatility has also risen, with an average daily price spread of €95/MWh since January 2025. May’s average electricity price dropped to €19/MWh, a level not seen since April and May 2020, but evening prices, particularly from 9 p.m. to 11 p.m., often tripled the monthly average. Storio Energy noted: “This discrepancy reflects the persistence of structural tensions on the network in the evening.”

These trends underscore opportunities for optimizing energy use in France as renewable energy production grows.