HOLZ Biogas Plant
| Location | Germany |
| Construction Period | 1996 |
| Input | Manure, other organic waste |
| Fermenter | Two steel tanks, 100 m3 each |
| Gas utilization | Dual fuel co-generator , 45 kWel |
| Specials | Two digester, external gas bag |
| Responsibility | Basic evaluation, pre-, draft-, approval and execution planning, start-up (for TBW GmbH) |