4 ms·
What is the efficiency of hydrogen-to-power? Or, the round trip efficiency of using hydrogen as storage?
by dahfizz 5y ago
What is the efficiency of hydrogen-to-power? Or, the round trip efficiency of using hydrogen as storage?
- bjourne 5y agoAbout 60-70%. Possibly it could be improved with better electrolysis techniques or large-scale facilities. Some Swedish companies are pushing for that solution: https://www.hybritdevelopment.se/en/a-fossil-free-future/ https://www.hybritdevelopment.se/en/a-fossil-free-future/ For now it's only for the steel industry but could in theory be used for other parts of the grid too.
- VBprogrammer 5y agoA 60-70% round trip efficiency would be very impressive for round trip efficiency of electricity to hydrogen and back. Its in the same ballpark as pumped storage. I can only assume it's assuming using fuel cells which are 90% efficient for the conversion to electricity. I'm not convinced these have really been deployed at that scale before, the biggest fuel cells I'm aware of are used in non-nuclear submarines where cost is not a priority.