Jōyō (常陽) is a test sodium-cooled fast reactor located in Ōarai, Ibaraki, Japan, operated by the Japan Atomic Energy Agency. The name comes from the previous country name of the area around Ibaraki.
- Country
- Japan
- Website
- https://www.jaea.go.jp/04/o-arai/joyo/, https://www.jaea.go.jp/04/o-arai/joyo_users_guide/