waste-to-energy at 27.6% 28.2% 30.8% Portion of energy produced from renewable sources (incl. waste-to-energy at 51%) and similar 51.2% 49.6% 49.2% Waste-to-energy plant emission levels vs legal limits (real concentrations/legal limits: optimal value <100%) 21.2% 19.3% 17.1% Quality of treated water vs legal limits (real concentrations/legal limits: optimal value <100%) 31.7% 30.0% 25.3% Compliance with Kyoto Protocol (real emissions/authorised emissions) 86% 64% 70% Non invoiced water (physical and administrative losses from the civil water system) 25.4% 25.3% 25.5%* Separate waste collection 31.2% 36.1% 42.4% Fuel with low envir.