Hovatn power station | Agder Energi

Hovatn power station

The main plant at Hovatn was commissioned in 1971. In 1996 the upper part of the Heis river system was diverted to the Hovatn reservoir.

Key numbers


Hovatn power station is situated in Bygland Municipality in Aust-Agder. The municipality has a population of 1 200, and covers an area of 1 312 km², approximately 12% of which is water. Hovatn is one of three power stations in the municipality.

The power station makes use of the 485-metre drop from the reservoir at Hovatn to the River Otra.

It is dug 340 metres into the mountains on the east side of the Otra, approximately four kilometres north of Ose. The power station, which is located at Heistad, is remotely controlled from the Brokke control centre.

Tunnel length 3940m
Vertical drop 485m
Operating since 1971
Number Aggregates in operation at the station:1
Agder Engergi owns 100% of power plant
Every second runs the 10m³ water through the plant. Enough to fill 1 ten-liter buckets of water every hundredth of a second.

Power producting:

Hovatn power station supplies 78 GWh to Agder Energi per year, equivalent to 0.95% of the 8200 GWh generated by the group in an average year.
This makes Hovatn power station the 25th biggest power station in the Agder Energi group.
1000 husstander 1000 husstander 1000 husstander 1000 husstander
Agder Energi’s share of generation covers the annual consumption of approximately 3900 households.

Wikipedia, Agder Energi’s own data.