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| Period | Asset | Nameplate (MW) | Status |
|---|---|---|---|
| 20 Apr 2022 | Atmospheric Line 1 | 500 | Official opening of the automated Herøya plant. |
| Apr 2024 | Atmospheric Line 2 | 500 | Operational. Site atmospheric nameplate 1,000 MW. |
| Jan 2025 | Herøya alkaline plant | 1,000 | Production temporarily halted on low order intake. |
| YE 2025 | Atmospheric Line 1 | 500 | Fully impaired NOK 291 million. Idle. Restart unlikely. |
| YE 2025 | Atmospheric Line 3 expansion items | Long-lead items not installed, fully impaired NOK 70 million. Construction unlikely. No nameplate printed. | |
| 12 Dec 2025 | Pressurized alkaline line | 1,000 | FID to build up to 1 GW at Herøya. Both 500 MW atmospheric lines idling. Capex about NOK 300 million before grants. |
| 6 May 2026 | Pressurized alkaline platform | 1,000 | Commercial launch. Deliver-at-scale target remains 2027. |
| Q2 2026 | Pressurized 1 GW line | 1,000 | Construction initiated. Atmospheric capacity still unutilized. |
| Grant path | EU Innovation Fund envelope | 4,000 | Up to 4 GW pressurized in Norway if later expansions proceed. Not installed. Not a second FID. |
