Phoenix Solar Germany
Ziegenaus
How an innovative sawmill makes the grade ecologically
The Ziegenaus sawmill in Höfarten, near Aichach (Germany) combines a long-standing company tradition with state-of-the-art saw systems. By deciding to install a solar power plant on the sawmill‘s roof, the entrepreneur Anton Ziegenaus successfully harmonised the company‘s closeness to nature with innovative solar technology.
After a planning phase of just four months, the solar power plant with a total capacity of 235 kWp was connected to the grid and several months later expanded by another 50 kWp. The project plan for this system was devised in consultation with a project manager from Phoenix Solar. This enabled close cooperation between the two parties. The positioning of the inverters was of particular significance in the system planning. The exhaust air from the sawmill is heavily contaminated with sawdust. In order to prevent this from damaging the inverters, it was necessary to keep the inverters separate from the exhaust air and install them in a special housing.
The entrepreneur is highly satisfied with his decision: already in the first four months of operation, about 10% of the system‘s investment costs have been amortised.
| Rated system power | 285 kWp |
|---|---|
| Annual energy yield | approx. 267,000 kWh |
| Feed-in tariff/kWh | EUR 0.493 |
| Feed-in tariff p.a. | approx. EUR 130,000 |
| CO2-savings p.a. | approx. 246,000 kg* |
| No./type of modules | 4,385 x First Solar FS-265 |
| Inverter | 3 x Fronius IG 400, 1 x Fronius IG 500, 14 x Fronius IG 60, 6 x Fronius IG 40, 4 x Fronius IG 30, 4 x Fronius IG 15 |
| Construction type | roof-mounted system |
| Tilt angle | 8° |
| Frame technology | module substructure specially developed for this project due to roof supports‘ wide spans |
| Orientation | east/west |
* Source: German CO2 offset calculation (0.932 tonnes of CO2 avoided per MWh) based on data from BMU AGEE (Arbeitsgruppe Statistik Erneuerbare Energie) 2006.
