Definitions for Climate Neutrality and their Relevance for the Assessment of Solar Energy based Heating Systems
Abstract
This contribution presents three approaches for the definition of climate neutrality. These three approaches are based on different ways for balancing CO2-eq emissions. Only with the third approach, called real climate neutrality, it will be possible to achieve climate neutrality on global level. The effort for achieving climate neutrality is varying significantly depending on the chosen approach. The calculation of climate neutrality is exemplarily performed according to the three approaches for a single-family house in Germany with different concepts for heat and power supply. The concept combining photovoltaic and solar thermal has by far the lowest CO2 eq emissions and only moderate additional costs.