These firms are in the thick of the switch from gray to green. Imagine flying in a plane, riding a…
These firms are in the thick of the switch from gray to green.
Imagine flying in a plane, riding a bus or getting electricity from a local utility that emits only water vapor and warm air. It’s possible with power from hydrogen fuel cells, a technology the world has had since the 1800s. The emissions are clean, but producing the hydrogen itself isn’t necessarily environmentally sustainable. Most “gray hydrogen” is made using natural gas or coal without carbon-capture technology. But there are companies involved with “green hydrogen,” which is made with renewable energy that is used to separate water into hydrogen and oxygen using a tool called an electrolyzer. “What has historically been a niche…