Senate Republicans revealed a new tax for solar and wind energy this weekend, in the latest version of a bill that could be passed as early as Monday afternoon.

Senate Republicans’ move to step up attacks on the wind and solar industries in the latest version of the mega tax and policy bill has shocked clean energy groups and fossil fuel advocates alike, as many warn a new tax on renewables could send energy bills soaring in the coming years.

Senate Republicans stunned the power industry over the weekend with a proposed new tax on wind and solar projects, part of a broader push to unravel incentives for renewable energy. Energy tax credits that were expanded during the Biden administration are wrapped up in a fierce congressional fight over President Trump’s signature tax and spending bill.