Projects / prj-helen-helsinki-smr
Helen nuclear energy programme plant in Helsinki
Helen launched a nuclear energy programme in 2024 for district heat and possibly electricity. In November 2025 three alternative Helsinki sites (Vuosaari, Salmisaari, Norrberget) advanced to further study. Technology, output and heat-only versus combined use are not decided.
- Stage
- Siting
- Design
- Design not selected (SMR)
- Technology
- Not selected · unknown
- Operator(s)
- Helen
- Vendor(s)
- —
- Location
- Helsinki (Vuosaari, Salmisaari or Norrberget) · Finland · precision: undisclosed
Searchable without an invented map pin. - Coordinates
- undisclosed / not plotted
- Electrical capacity
- — · scope: plant
- Thermal capacity
- —
- Modules planned
- —
- Inclusion basis
- smr_by_vendor_claim_with_capacity_check
- Confidence
- medium
- Last verified
- 2026-10-02 (publication/verification date)
Milestones & dated events
- No dated milestones recorded yet.
Regulatory actions
- None recorded in this release.
Sources
- Helen: three alternative plant sites studied in Helsinki (company_primary, accessed 2026-10-02)
- WNN: Finnish energy firm Helen launches nuclear programme (reputable_press, accessed 2026-10-02)