The $7 billion government investment is supposed to catalyze another $40 billion in private investment, providing lots of jobs and economic benefits across seven different U.S. regions while bringing hydrogen -- an emission-free form of energy ideal in serving heavy industries -- to mainstream use.

hose various projects also announced several partner companies in each regional hub, spreading the benefits across a number of industrial stocks.

However, one company that didn't make the headlines on any of these projects may actually stand to benefit the most. And its stock looks like a solid buy today. 

Chart Industries is a key supplier

It has been said that in the 1849 California gold rush, it wasn't the prospectors that got rich, but rather those that sold the "picks and shovels" to those prospectors.

So while a lot of big companies were named in these hydrogen projects, it's possible that the biggest beneficiaries may in fact be those that sell "picks and shovels" equipment to those building out these hubs.

That is likely to be a boon for Chart Industries (NYSE: GTLS), which may in fact be the biggest beneficiary in all of this.

Chart is a specialist in cryogenic tanks and heat exchangers, whose biggest business at the moment is liquified natural gas infrastructure. However, that same expertise can be used in hydrogen infrastructure, and Chart has been capitalizing on that trend since 2020.