Nicolas Dessertenne, a French trade union General Confederation of Labour (CGT) delegate, poses for a photograph at the entrance of Gravelines Nuclear Power Station during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Employees of Gravelines Nuclear Power Station gather at the entrance during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Frederic Saveant, a delegate of French trade union Workers' Force (FO), poses for a photograph at the entrance of Gravelines Nuclear Power Station during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Employees of Gravelines Nuclear Power Station gather at the entrance during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Yannick Genin, a French Confederation of Management General Confederation of Executives (CFE-CGC) delegate, poses for a photograph at the entrance of Gravelines Nuclear Power Station during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Employees of Gravelines Nuclear Power Station gather at the entrance during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Employees of Gravelines Nuclear Power Station wearing French trade union Workers' Force (FO) vests gather during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)

Employees of Gravelines Nuclear Power Station gather at the entrance during a strike in Gravelines, northern France, on September 15, 2026. Around 80% of the employees at the Gravelines nuclear power plant, the largest in Western Europe, were on strike on September 15, 2026, morning, according to the unions, as part of a nationwide movement to defend the preferential electricity rates enjoyed by staff. (Photo by Sameer Al-DOUMY / AFP via Getty Images)