This photograph shows a banner reading "Don't mess with my agent rate" is displayed at the entrance of the 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)

This photograph shows posters calling for a strike displayed at the entrance of the Gravelines Nuclear Power Station 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)

This photograph taken on September 15, 2026 shows the flag of the French trade union General Confederation of Labour (CGT) wawing at the entrance of the Gravelines Nuclear Power Station during a strike, in Gravelines, northern France. 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)

This photograph taken on September 15, 2026 shows the flag of the French trade union General Confederation of Labour (CGT) wawing at the entrance of the Gravelines Nuclear Power Station during a strike, in Gravelines, northern France. 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)

An employee of Gravelines Nuclear Power Station rides his motorcycle 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)

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)