COMFORT Package Tag

Following the introduction of the subsidy law of the same name in mid-2017, the term mutli tenant self consumption (in German: "Mieterstrom") has become increasingly popular. However, it is not self-explanatory. Multi tenant self consumption means: electricity is generated on site in multi tenant buildings by means of photovoltaic systems or combined heat and power units and is largely consumed directly by the end users of the property. The end users can be both private households and companies.

Around 70% of the total of 18 million residential buildings in Germany were built before 1979, i.e. at a time when there were no or extremely low energy efficiency requirements. According to a study by the Institute for Living and the Environment, 25-30% of these existing buildings have been modernized. As a result, nearly 9 million residential properties in Germany have not yet been upgraded, or have been upgraded only slightly in terms of energy efficiency.