Tokai Daini is a 1,100 MW nuclear power station in Ibaraki, Japan. It ranks #92 of 692 Japan power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, nuclear supplies about 9.1% 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 WRI1000689.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: WRI GPPD; fuel: WRI GPPD
At 1,100 MW, Tokai Daini is below the median nuclear plant in Japan (2,070 MW). Technically it is described as gas-cooled reactor. Its current lifecycle status is “Construction” — so it is not yet, or no longer, generating at full output. Nuclear plants split uranium to raise steam with no direct CO₂; they run as steady baseload with very high capacity factors and the longest operating lifetimes of any thermal plant.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
The #20 largest nuclear power plant of 24 in Japan by capacity.
Japan has 24 nuclear power plants in this dataset, together about 61,851 MW of capacity.
Coordinates 36.4215, 140.6028 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Tokai Daini is a 1,100 MW nuclear power plant in Ibaraki, Japan, Construction 1966.
