Cleaner Tech

A Green Hydrogen Economy Depends on This Little-Known Machine

The electrolyzer, obscure for decades, sees its sales soar. Here’s how the technology works.

A Plug Power Inc. electrolyzer stack at the company’s Concord, Massachusetts, facility. Electrolyzers, which use electricity to split water into hydrogen and oxygen, are a building block of a green hydrogen economy. — A Plug Power Inc. electrolyzer stack at the company’s Concord, Massachusetts, facility. Electrolyzers, which use electricity to split water into hydrogen and oxygen, are a building block of a green hydrogen economy.
Photographer: Adam Glanzman/Bloomberg

By David R Baker

July 22, 2022 at 5:00 AM EDT

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