WCG Wärme Contracting provides heating solutions through a contracting model for residential and commercial buildings. The portfolio includes heat pumps, gas heating systems, and hybrid systems. WCG handles planning, financing, installation, and operation of the system. Customers pay a monthly usage fee instead of a high upfront investment. More than 21,500 customers already use this solution. Implementation is carried out together with more than 1,300 regional trade partners.