With the coal exit to get industry and municipalities is a Problem: sewage sludge and other problematic waste, you can no longer tax as was previously in power plants. Alternatives could be expensive.

It comes to sewage sludge, waste oils, solvents, Refinery residues, are more than five million tonnes of hazardous or problematic waste land each year in a German coal-fired power plants. This is perceived by the Public and is completely legal. But it has always been highly controversial.

One of the largest single item in the list of substances that are mitverfeuert in coal-fired power plants, sewage sludge. Nationwide, the residues from municipal and industrial wastewater treatment plants make up about twenty percent of all coal-fired power plants dumped materials.