Tyin is a 390 MW hydro power station in Sogn og Fjordane, Norway. It is operated by Norsk Hydro ASA [100%]. Based on its capacity (estimated), it can supply roughly 390k homes (estimated). It ranks #14 of 307 Norway power plants by installed capacity. Commissioned in 2004, it is around 22 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 90.0% of Norway's electricity; the national grid averages 28 gCO₂/kWh (99.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1003597.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 390 MW for Tyin hydroelectric plant, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000602995; fuel: WRI GPPD
In context: how this plant compares
At 390 MW, Tyin is well above the median hydro plant in Norway (43 MW). Technically it is described as conventional storage. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Norway hydro capacity
- 1.4% of 28,510 MW across 291 plants in this dataset
- Age among peers
- 154 of 169 dated hydro plants in Norway are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest hydro plants in Norway
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Norsk Hydro ASA [100%].
Climate zone & how it works
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a Mediterranean subarctic climate (Köppen Dsc) — Northern Hemisphere, latitude 61.3°N — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #12 largest hydro power plant of 291 in Norway by capacity.
Norway has 291 hydro power plants in this dataset, together about 28,510 MW of capacity.
Nearby power plants
Location
Coordinates 61.297, 7.8501 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Tyin?
Tyin is a 390 MW hydro power plant in Sogn og Fjordane, Norway, commissioned in 2004.
Who operates Tyin?
Tyin is operated by Norsk Hydro ASA [100%].