Siemens Energy
PEM electrolysers from a Berlin gigafactory
Ranked #3 in Best Green Hydrogen Companies.
Siemens Energy makes PEM electrolyser stacks at its factory in Berlin. In 2025 it delivered the first stacks for Air Liquide's 200 MW Normand'Hy project in Port-Jerome, France.
At a glance
| Price from | Custom |
| Best for | European industrial projects choosing PEM electrolysis |
From Siemens Energy's own website.
What stands out
- Backed by a large energy equipment group
- Automated stack production in Berlin
Worth knowing
- Hydrogen is a small part of the group
- Price not published
How it ranks
Siemens Energy is ranked 3rd of 10 in Best Green Hydrogen Companies (Lister Score 94.3).
#3 in Best Green Hydrogen Companies · Lister Score 94.3
Siemens Energy delivered the first nine of 12 PEM stacks for Air Liquide's 200 MW Normand'Hy plant in 2025..
| Rank | Best Green Hydrogen Companies | Score |
|---|---|---|
| 1 | thyssenkrupp nucera | 96.7 |
| 2 | NEOM Green Hydrogen Company | 95.6 |
| 3 | Siemens Energy | 94.3 |
| 4 | Nel | 93.0 |
| 5 | John Cockerill Hydrogen | 91.7 |
| 6 | Plug Power | 90.4 |
| 7 | LONGi Hydrogen | 89.1 |
| 8 | Topsoe | 87.8 |
| 9 | ITM Power | 86.4 |
| 10 | Electric Hydrogen | 85.0 |
Frequently asked questions
How does Siemens Energy rank on Lister?
Siemens Energy is ranked 3rd of 10 in Best Green Hydrogen Companies (Lister Score 94.3).
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