Converter station
Evje and Flåt received electric power in 1908–1909. The electricity came from the greater Oslo area. The power plant was located by Fennefossen in the Otra river, near Evje.
Transformer stations were built at the upper and lower mining facilities in Flåt in 1909. Electricity powered the cableway, the elevator in the ore shafts, the water pumps, and the stone crusher.