Norsk Hydro, the Norwegian energy and offshore group, has signed a letter of intent with Selmer Skanska, the Norwegian subsidiary of Skanska, the Swedish construction group. The agreement concerns the construction of a new power plant in Tyin in Norway, in addition to a new water process system at the smeltery in Ardal in Norway, and has a limit of NOK 512 million. The construction is to start in October and should be completed in September of 2004, increasing energy production in Tyin by around 15%. This represents around 200 GW/h per year and does not entail changes in the water weir.