Kläranlagen                                                                                                   Investitionsbeiträge an Klärgas-BHKW  

Abwärme                                                                                                      CO₂-Kompensation:                                                                                           Förderprogramm "Wärmeverbünde" 

Wasserversorgung                                                                                        Trinkwasserkraftwerke:                                                                                      Beitrag an Grobanalyse