This article relies largely or entirely on a single source. (May 2026) |
Gravfoss Power Station (Norwegian: Gravfoss kraftverk) consists of two run-of-the-river power plants in the Drammen watercourse, in Modum municipality, Buskerud, Norway.
| Gravfoss Power Station | |
|---|---|
 Gravfoss I | |
 | |
| Country | Norway |
| Location | Modum, Buskerud |
| Coordinates | 59°55′46″N 9°56′47″E / 59.9294°N 9.94646°E |
| Status | Operational |
| Commission date |
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| Owner | Glitre Energi |
| Operators |
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| Tidal power station | |
| Tidal range |
|
| Power generation | |
| Nameplate capacity |
|
| Annual net output | 249 GWh |
The plants lie just above the confluence with the Snarum River at Geithus, below Geithusfoss Power Station, and use water coming from Tyrifjorden, the Begna, and the Randsfjorden/Dokka watercourses. Both plants use the drop from the intake dam above Gravfossen, which originally had a natural fall of 14 meters. The current dam was put into use in 1935 and can be regulated with one sector gate and one segment gate.[1]
Both power plants are owned by Glitre Energi.[1]
Gravfoss I
editThe older power plant was originally put into operation in 1903 and was expanded in 1931. It has a head of 19.7 meters, utilized in one Francis turbine and one Kaplan bulb turbine. Total output is 19 MW, with a possible mean annual production of 30 GWh. This plant is now used mainly as a flood power plant.[1]
Gravfoss II
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The newer power plant, from 1996, uses a head of 20 meters. It is equipped with one Kaplan bulb turbine, which produces 30 MW on the generating unit. Mean annual production is 219 GWh.[1]
References
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This article incorporates text from a free content work. Licensed under CC-BY SA. Text taken from Gravfoss kraftverk, Knut A. Rosvold, Store norske leksikon.
- 1 2 3 4 Rosvold, Knut A., ed. (2024-02-12). "Gravfoss kraftverk". Store norske leksikon (in Norwegian). Foreningen Store norske leksikon. Retrieved 2026-05-30.