According  to a new report in Bloomberg, Germany is preparing to impose a windfall tax of 90% on some clean power generators, as they seek to fund a new consumer aid package.

Under the draft law, seen by the outlet, the government will impose the tax on earnings above €130 per megawatt-hour for solar, wind and nuclear power generators. The new legislation will be voted on December 16th, by the upper house of parliament.

The tax will be levied based upon fuel consumption by the generators, and will affect fossil fuel plants as well, with lignite plants taxed on any earnings over €82 per megawatt hour. Oil plants will be taxed  on earnings over €280. The policy will be backdated to September 2022, and operate for ten months until June of 2023. It will have the option of being extended until the end of 2024.

Lawmakers hope the program will generate enough funds to help finance the €54 billion subsidy program which will cap energy and gas prices for consumers and companies in 2023. Authorities have said they hope the windfall tax will generate a “double-digit billion-euro amount,” to help offset the costs of the subsidy program.

Renewable energy producers and energy lobby groups have not been pleased by word of the new taxes, noting it will hinder investment in new green energy projects which are necessary to help increase supplies and bring down energy costs, as well as wean the nation off outdated fossil fuel energy plants.

Andreas Jung, a lawmaker from the Christian Democrats, noted in Bloomberg’s report, that the legislation would inevitably “suffocate” investments in new green energy projects, as well as research into new technologies which would prove vital to solving Europe’s energy problems.

Lawmakers however point to the record profits being enjoyed by green energy companies, amid the energy crisis in Europe, and the necessity of helping consumers through this difficult period.