They can run on a variety of fuels, but some 90 percent of them currently run on natural gas, a fossil fuel that produces carbon dioxide when you burn it, while also escaping into the atmosphere everywhere you pull it out of the ground, to create greenhouse conditions some 80 times worse than CO2 over a 20-year time frame.

In the race to zero emissions by 2050, gas turbines will need to adapt or die, and several organizations, including General Electric, have been looking into transitioning them to burn green hydrogen as a clean fuel source. GE has more than 100 turbines running on at least 5 percent hydrogen fuel by volume, and it says it's on the path to 100 percent.