A person familiar with the situation says that Uniper and the company formerly known as Gazprom Germania are asking for 92 percent of the relief from the tax to be shared with consumers.

According to Trading Hub Europe, Germany's gas market manager, twelve companies have applied for assistance through the levy.

The utility's chief executive officer said during a call with reporters last week that Uniper accounts for more than half of the relief.

According to the person, 25% of the total is accounted for by the former Gazprom unit. Relief is included for the company's contractual partners Wingas and VNG.

That would put Uniper's share at around 70%. The company won't give a figure.

Consumers in Germany will have to pay more for natural gas in October. The new measure would allow energy importers to pass on higher costs to consumers. Without the levy there would be a risk of insolvencies in the energy market.

The group got a 10 billion euro loan from the government in June.

Eight other companies are responsible for 8% of the costs. RWE AG will waive the surcharge because it is not dependent on Russian gas.

The sales tax on natural gas was cut in order to make up for the increased energy costs.

Todd Gillespie assisted.