| Established Entity (Facility Name) | Main Processing Material (Number of Fermentation Lanes) | Year Completed |
|---|
| Kennan Eisei Kogyo Co., Ltd. (Plant No. 1, Headquarters) | Organic waste (4 lanes) | August 1984 |
| Kennan Eisei Kogyo Co., Ltd. (Plant No. 2, Headquarters) | Organic waste (8 lanes) | March 1991 |
| Akita Agricultural Public Corporation (Agricultural Producers Cooperative Corporation, Akita Kakin) | Poultry farm excreta (2 lanes) | February 1995 |
| Hokkaido Agricultural Public Corporation (Hamatonbetsu Livestock Center) | Cattle excreta & fishery products (3 lanes) | December 1995 |
| Saitama Prefecture (Saitama Prefectural Livestock Experiment Station) | Livestock excreta (1 lane) | June 1997 |
| Tosa-cho, Kochi Prefecture (Tosa-cho Compost Center) | Cattle excreta (2 lanes) | May 2000 |
| Fukui Agricultural Public Corporation (Agricultural Producers Cooperative Corporation, Soil) | Cattle excreta (3 lanes) | November 2000 |
| Iwanuma-shi, Miyagi Prefecture (Kennan Purification Center) | Dewatered sludge (2 lanes) | July 2001 |
| Reihoku-machi, Kumamoto Prefecture (Reihoku-machi Compost Center) | Cattle excreta, garbage, sewage sludge (2 lanes) | August 2001 |
| Minamisatsuma-shi, Kagoshima Prefecture (Compost Station Yukinosato) | Cattle excreta, garbage (2 lanes) | December 2001 |
| Yabu-shi, Hyogo Prefecture (Oya Compost Center) | Cattle excreta (2 lanes) | March 2003 |
| Fukawa Yokei Agricultural Cooperative Association (Fukawa Yokei Compost Center) | Poultry farm excreta (3 lanes) | June 2004 |
| Heiwabussan Co., Ltd. (Composting Facility, Sanfu) | Organic waste (4 lanes) | December 2004 |
| Toyoura-cho, Hokkaido (Toyoura-cho Compost Center) | Fisheries waste (2 lanes) | January 2005 |
| Fuji Foods Corporation (Nikko Plant) | Bean sprouts (3 lanes) | September 2005 |
| Ishiigumi Co., Ltd. (Niigata Compost Center) | Organic waste (4 lanes) | November 2005 |
