| 1 | | Feldstraße 49 | Nordenham |  DE | | N/A | +49 473120860 | | Andreas Piepenbrink |
| 2 | | Alfred-Leikam-Straße 16 | Schwäbisch Hall | DE | | Energy Equipment and Solutions | +49 7914010 | | Peter Breuning |
| 3 | | Berliner Str. 260 | Gütersloh | DE | | Electric Utility Company, Gas Company | +49 5241820 | | Viktor Heide |
| 4 | | Willy-Brandt-Allee 26 | Gelsenkirchen | DE | | Water Utility Company, Electric Utility Company, Energy Supplier, Gas Company, Green Energy Supplier | +49 8001999910 | | Raymond Hernandez |
| 5 | | Pfungstädter Str. 20 | Darmstadt | DE | | Engineering Consultant | +49 615194530 | | Samer Daoud |
| 6 | | Bayenthalgürtel 9 | Köln | DE | | Gas Company, Consultant, Electric Utility Company, Water Utility Company | +49 221937310 | | Wolfgang Reuter |
| 7 | | Kornblumenstraße 7/1 | Friedrichshafen | DE | | Public Works Department | +49 7541505262 | | Peter Turkowski |
| 8 | | Kapellenhof 6 | Rottweil | DE | | Manufacturer | +49 8000472222 | | Bertin Eberhard |
| 9 | | An d. Vogelstange 2A | Jülich | DE | | Public Works Department, Electric Utility Company, Gas Company, Heating Equipment Supplier, Solar Photovoltaic Power Plant, Water Utility Company | +49 2461625122 | | Ceyda Yildirim |
| 10 | | Saarbrücker Str. 150 | Friedrichsthal | DE | | Public Works Department, Electric Utility Company, Gas Company, Water Utility Company | +49 689781000 | | Gerhard Bös |
| 11 | | Bürgerparkstraße 9 | Cloppenburg | DE | | Electric Utility Company, Gas Company | +49 44717011420 | | Michael Lünsmann |
| 12 | | Gutenbergstraße 35 | Spaichingen | DE | | Gas Company | +49 74243531 | | Bertin Eberhard |
| 13 | | Waldbachstraße 5 | Gernsbach | DE | | Gas Company | +49 722467412 | | Franziska Boll |
| 14 | | Schleusenstraße 22 | Zehdenick | DE | | Public Works Department | +49 330746930 | | Matthias Kroenert |
| 15 | | Königstor 3-13 | Kassel | DE | | Electric Utility Company, Gas Company | +49 5617820 | | Jennifer Hoes |
| 16 | | Kirchpl. 2 | Dransfeld | DE | | Association or Organization | +49 550291050 | | Dirk Bankes |
| 17 | | Triftstraße 40 | Erfurt | DE | | Manufacturer | +49 3617315254 | | Oliver Meinicke |
| 18 | | Neckarstraße 7 | Maintal | DE | | Distribution Service | +49 6181941060 | | Tilman Heiden |
| 19 | | An d. Limpurgbrücke 1 | Schwäbisch Hall | DE | | Public Works Department | +49 7914010 | | Peter Breuning |
| 20 | | Schulhausstraße 40 | Bad Säckingen | DE | | Energy Supplier | +49 776155020 | | Cebandt Ralf |
