Shareholders in Uniper have today approved a state bailout that has so far cost the German government more than €50 billion, paving a way for a de facto nationalisation of the struggling gas giant.

CEO Klaus-Dieter Maubach earlier told a virtual extraordinary meeting that the disarray caused by the loss of gas supplies from Russia could leave shareholders with nothing if they did not accept the German proposal.

Russia's Gazprom was once Uniper's biggest supplier of gas, but a big drop in deliveries after Moscow's invasion of Ukraine forced the German gas importer to buy gas elsewhere at much higher prices to honour its contracts.

That, Maubach said, was the sole reason for the bailout.

Uniper's investors voted in favour of the two main measures at today's meeting, an €8 billion capital injection by the German state and allowing a further injection of up to €25 billion by Berlin.

"The measures are indispensable for this company's future," Maubach said. "If approval is not granted, we would have to review very critically the so-called going concern forecast for our company," he added.

"In the Management Board's view, a possible insolvency could lead to a complete loss for shareholders," he added.

Maubach said Uniper currently had access to around €2.5 billion of funds.

As part of the bailout, the German government will end up owning just below 99% of Uniper, Germany's largest gas trader, following two share issues.

Germany's Finance Ministry will be responsible for the stake, Uniper said today.

Current majority shareholder, Finland's Fortum, will exit as a result, although it will retain the right to make an initial offer for Uniper's Swedish nuclear and hydro assets by end-2026, should the company decide to sell those.

Uniper said it currently has no plans to do so.

The loss of Russian gas, Moscow's retaliation for Western sanctions over its invasion of Ukraine, triggered a €40 billion net loss for the importer, which provides around a third of Germany's gas, the largest loss in German corporate history.