Wave and Tidal power plant in Incheon, South Korea. Approximate location 37.3142, 126.6136.
Wave and TidalIncheonSouth Korea
Sihwa Lake Tidal Power Plant is a 254 MW wave and tidal power station in Incheon, South Korea. It is operated by Korea Water Resources Corporation. Based on its capacity (estimated), it can supply roughly 159k homes (estimated). It ranks #104 of 216 South Korea power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, the national grid averages 417 gCO₂/kWh (40.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1029923.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.
capacity: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel
This facility converts its energy source into electricity for the grid; its capacity, fuel type and location determine its role in the national power mix.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Operated by Korea Water Resources Corporation. All plants by this company →
This wave and tidal plant converts the motion of waves or tides into electricity. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 37.3°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 18% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 60/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with thermal cycling the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
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.
South Korea has 1 wave and tidal power plant in this dataset, together about 254 MW of capacity.
Coordinates 37.3142, 126.6136 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Sihwa Lake Tidal Power Plant is a 254 MW source-record wave and tidal power plant in Incheon, South Korea.
Its output is enough to supply roughly 158,931 homes (estimated).
Sihwa Lake Tidal Power Plant is operated by Korea Water Resources Corporation.
