A hydrogen fuel cell generator works by turning hydrogen and air into electricity, heat and water in a PEM fuel cell. There is no combustion and no engine. The only moving part is a fan.
What is inside
- A fuel cell stack that makes the electricity.
- A hydrogen supply. Runtime depends on the load and on how much hydrogen is stored on site.
- Batteries or supercapacitors that take sudden load peaks.
Can a hydrogen fuel cell power a generator?
The fuel cell is the generator. It replaces the engine, so there is nothing to burn and no exhaust fumes at the site. Refuelling takes about two minutes.
Figures from the Unconventional Energy product pages. Updated 2 November 2026.