Borne didn’t provide specific details on the nationalization of EDF, which is 84%-owned by the state. President Emmanuel Macron had said during his re-election campaign in March that part of the company should be nationalized to bolster French energy independence and its net-zero ambition by building new atomic plants.

EDF shares jumped on Borne’s announcement, rising as much as 10% in Paris after having been down sharply prior to her comments.

EDF has been grappling in recent years with various issues at its aging fleet of reactors and cost overruns when building new ones. Its problems are being exacerbated by a government price cap and Russia’s invasion of Ukraine, which is boosting the price at which the company must buy back its electricity output shortfall.

The plan signals that European governments may increasingly be forced to protect their energy companies from the turmoil Russia’s war has caused. Nationalizing EDF would be a largely consensual move in French politics, one that is likely to see a divided lower house rally round Macron who lost his outright majority in elections last month.

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Macron said earlier this year that EDF will need a broad reorganization and tens of billions of euros of public financing to help it build 6 to 14 new nuclear plants by 2050. The new power stations, along with swathes of new wind and solar power projects and very ambitious energy-savings targets, are part of France’s plan to be carbon-neutral by 2050.

A nationalization of EDF may reassure creditors as the utility’s net financial debt, which stood at 43 billion euros at the end of last year, is set to soar despite a 3.2-billion euro capital increase in April.

Credit rating firms, which downgraded the utility in February, warned of further potential cuts as the company is grappling with repairs at some of its atomic power stations and cost overruns at nuclear plants under construction in France and the UK.

In 2019, the French government was considering buying out minority shareholders as part of a restructuring to help fund the lifetime extension of EDF’s aging nuclear plants — which produced 69% of the country’s electricity last year — and invest more in renewables.

The plan stalled in 2021 after more than a year of discussions as the European Commission — which vets proposals that could be considered “state aid” to a company — asked for deeper separation of EDF’s various entities in exchange for higher regulated prices for its nuclear power.

Macron has asked the Commission to consider an overhaul of Europe’s electricity market to make it less dependent on surging gas prices, with the EU’s executive arm yet to come up with solutions. In the meantime, Spain and Portugal were given the green light to temporarily cap prices.

“France must also prepare for all scenarios regarding Russia gas supply, even the toughest,” Borne said. “We can hold up, but everyone will have to take action.” The government will increase home renovation subsidies to cover 700,000 households per year, she said.