Tosa Works power station is a 30.9 MW coal power plant in Kōchi Prefecture, Japan. It is operated by Taiheiyo Cement Corp [100%]. Based on its capacity (estimated), it can supply roughly 39k homes (estimated). It ranks #385 of 692 Japan power plants by installed capacity. Commissioned in 1997, it is around 29 years old — long-established. In context, coal supplies about 32.1% of Japan's electricity; the national grid averages 477 gCO₂/kWh (32.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_tosaworks_japan.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: GEM GCPT; fuel: GEM GCPT
In context: how this plant compares
At 30.9 MW, Tosa Works power station is below the median coal plant in Japan (250 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Japan coal capacity
- less than 0.1% of 53,431 MW across 94 plants in this dataset
- Age among peers
- 35 of 83 dated coal plants in Japan are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Japan
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Taiheiyo Cement Corp [100%].
Climate zone & how it works
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 33.4°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 corrosive environment (estimated ISO 9223 class C4 — High), 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 #93 largest coal power plant of 94 in Japan by capacity.
Japan has 94 coal power plants in this dataset, together about 53,431 MW of capacity.
Nearby power plants
- Kochi Cement Plant power station · Coal · 122 MW · Kochi
- Tosa power station · Coal · 30 MW · Kochi
- Hongawa · Hydro · 615 MW · Ehime
- Niihama Nishi power station · Coal · 300 MW · Ehime
- Funayaotsu · Solar · 14 MW · Ehime
- Saijo power station · Coal · 406 MW · Ehime
Location
Coordinates 33.433333, 133.433333 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Tosa Works power station?
Tosa Works power station is a 30.9 MW coal power plant in Kōchi Prefecture, Japan, commissioned in 1997.
Who operates Tosa Works power station?
Tosa Works power station is operated by Taiheiyo Cement Corp [100%].