Hydro to build 13-km 145-kV aluminium transmission line for Illvatn pumped-storage project

By Public Technologies
  • Norsk Hydro announced a 13-kilometer, 145 kV power line for its Illvatn pumped-hydro project in Luster, Norway, using aluminum pylons.
  • Investment framework set at NOK 2.5 billion; construction began in November 2025; start-up targeted for Q2 2030.
  • Illvatn aims to lift storage capacity by about 90 million cubic meters via pumping between reservoirs.
  • Project targets a gross output increase of about 210 GWh per year; net renewable generation increase seen at 107 GWh.
  • Power line build scheduled to start in 2027; 45 pylons to be produced from recycled aluminum or low-carbon aluminum from Hydro’s chain.


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