Converter station (built 1909, the lower installation)
Evje and Flåt got electric power in 1908-09, long before large parts of Oslo. The power plant was located at Fennefossen waterfall in Otra, at Evje Nikkelverk. The capital of Evje Nikkelverk was also expanded in the time period of 1908-19.
Electric power together with expanded capital made modernization of the Flåt mining operation and the smelting plant possible.