Germany's largest wastewater treatment plant (WWTP) "Koehlbrandhoeft / Dradenau" processes the wastewater of almost two million people and the industry of Europe's third biggest seaport. Operated by Hamburg Wasser with an electricity demand of 80 MWh p.a. it is still one of the biggest public energy consumers in the city. Before 1995 the energy-world was relatively simple: the energy demand was covered by electricity bought from the local supplier and natural gas from the grids. There was a monopoly of grid operators and a very small range for negotiating energy prices in Germany at that time. Climate change and renewable energy were not yet the main topics in public discussions.
展开▼
