What happened

Hydrogen fuel cell stock Plug Power (PLUG 7.61%) jumped nearly 5% in early afternoon trading on the Nasdaq Stock Market Thursday, and is still holding onto more than half those gains as the trading day winds down -- up 2.8% as of 2:10 p.m. EDT.

You can thank the U.S. government for that.

A building with a sign that says "Department of Energy"

Image source: Getty Images.

So what

This morning, Plug Power announced that the U.S. Department of Energy has "invited" it to submit a Part II Application for a loan guarantee under DOE's Title XVII Loan Guarantee Program.  

Title XVII refers to the part of the U.S. Energy Policy Act of 2005 that subsidizes development of "new or significantly improved technology" to "avoid, reduce or sequester greenhouse gases" -- a description that fits Plug Power's fuel cells, which produce byproducts no more harmful than pure H2O, to a T.  

Now what

If Plug's application is submitted and approved, the U.S. government would guarantee repayment to lenders offering Plug as much as $520 million in loans "to support the use of green hydrogen to transform the materials handling, transportation, and industrial sectors in the United States." (If Plug is unable to repay the loans, U.S. taxpayers will pick up the tab.) Upon receiving the guarantee, Plug intends to take out such loans, and use the money to build plants that will employ "green energy" sources to electrolyze water to produce as much as 180 tons of hydrogen gas per day.

Further down the road, U.S. Rep. Paul Tonko predicts "Clean hydrogen will be an essential component of building America's clean next-generation economy." This seems a heavy hint that Congress is contemplating awarding additional support to the fuel cell industry in President Biden's upcoming infrastructure bill.

No wonder investors are pleased.