French power strike removes 6.5 GW from production overnight
The industrial action reduced output at seven nuclear reactors and renewed a dispute over employee energy discounts and EDF’s investment burden.
A French electricity-sector strike removed 6.5 gigawatts of generating capacity overnight into 15 September, Reuters reported from EDF data. Most of the reduction came from seven nuclear reactors, with smaller amounts of gas-fired and hydroelectric output also unavailable. The reported reduction describes production capacity, not 6.5 GW of household disconnections.
The disruption was recorded until early Tuesday morning, while the industrial action was expected to continue through the day. Output could therefore change again. France normally obtains around 70 percent of its electricity from its 57-reactor fleet and exports power to neighbouring countries, making changes in French generation relevant beyond the national grid.
A dispute over compensation and cost
At the centre of the dispute is the discounted gas and electricity available to workers and retirees in the energy industries. Unions regard the benefit as part of compensation. France’s Court of Auditors has argued that its cost is excessive and recommended phasing it out, alongside limits on wage growth at EDF.
Reuters reported that the benefit represented more than €700 million in lost EDF revenue in 2024. EDF’s response before the strike was that large companies commonly provide preferential access to their own products and services, and that employees value the arrangement. The two positions reflect a disagreement about compensation and cost, not a settled finding that workers caused the company’s broader financial challenges.
Why the timing matters
The timing adds commercial significance. EDF faces major spending on maintaining and upgrading the existing nuclear fleet while planning new reactors. Gas terminals were also covered by strike notices as Europe works to refill storage ahead of winter. That does not mean every terminal or power plant was shut down.
For readers, the most useful indicators are updated generation data, any extension of strike notices and statements from unions, EDF or grid operators. The 6.5 GW figure is a verified overnight snapshot reported on 14 September, not a forecast for the whole of Tuesday or a measure of the strike’s eventual economic cost.
Sources & context
Reporting and reference material used for this article. Context sources do not independently confirm every news claim.
- Reuters: 6.5 GW taken offline overnight ↗Current independent reporting: EDF production data, affected generation and strike timing
- Reuters: unions’ strike notices and positions ↗Earlier reporting from the same organisation: union, EDF, company and government positions; not independent corroboration
- FNME-CGT: 15 September mobilisation ↗Primary union position and current mobilisation notice; not independent confirmation of production data or the audit figure
Written for WHIF from the linked material. This article does not claim on-the-ground reporting. Our editorial standards.