Guidehouse Environ Association Centre for Renewable Energy Sources and Saving (CRES) PNEC – Association of Municipalities Polish Network “Energie Cités” National Trust EcoFund (NTEF) SEVEn – The Energy Efficiency Center z.ú. Independent Institute for Environmental Issues UfU e.V. Berlin adelphi research gGmbH Energy Cities Romania/ OER Bridging European and Local Climate Action (BEACON)