1.

aha Zweckverband Abfallwirtschaft Region Hannover

2.

atmosfair

3.

BioEconomy Cluster

4.

BORDA-WesCA

5.

Bund

6.

Climate Analytics

7.

DGNB

8.

DGS Berlin Brandenburg

9.

District Government of Arnsberg

10.

Energy Economics Institute at the University of Cologne

11.

Erftverband

12.

European Southern Observatory