Jochenstein weir and power plant on the Danube

Aerial view of the Jochenstein barrage and power plant on the Danube, Untergriesbach, Passau, Lower Bavaria, taken on August 10, 2000.

After joining with the Inn and Ilz rivers in Passau, the Danube forms the national border between Bavaria and Austria for about 20 km. At Untergriesbach, the Jochenstein power plant has been producing 850 million kWh of electricity annually since August 1956. The power plant owes its name to the legendary Jochenstein rock, the home of the Danube mermaid Isa, sister of the Loreley.

(Hoch über Bayern 2, page 19)