Stock photography, photos: Hydroelectric power plant Stock photos of Hydroelectric power plant Photograph: © Franz Waldhaeusl Click for a larger image and more information Keywords associated with this stock photo: alternative, Austria, austrian, authorities, canyon, canyons, clean, electric, electricity, energy, engineering, Enns, generation, gorge, Gorges, Hieflau, hydroelectric, plant, plants, power, powerplants, production, renewable, river, station, Styria, styrian, supply, sustainable, technique, utility, Valley, water, waters