You can recycle valuable cork material through Kommunalservice Jena (KSJ), thus helping to preserve cork oak forests in the wintering grounds of the cranes and obtaining ecological insulation material.
BürgerEnergie Jena e.G. is working with various partners, including the Jena-Saale-Holzland community foundation, to install plug-in photovoltaic systems on balconies in Jena.