Some labor unions that typically support Democratic politicians are backing a proposal by Secretary of Energy Rick Perry that would subsidize coal and nuclear power plants, according to The Washington Post.

Perry has proposed a plan that would reward power plants that keep at least three months of fuel on site and don’t shut down during severe weather. Practically, this would favor coal and gas plants over other sectors, according to The Wall Street Journal.

The Utility Workers Union of America (UWUA) has joined several other unions to lobby the Federal Energy Regulatory Commission, according to The Washington Post.

“The UWUA supports those who support the priorities of our members and their communities regardless of their political affiliation,” the union’s national president Mike Langford told WaPo.