When the district heating systems expand, it will replace electricity and oil for heating. At the same time the Combined Heat and Power (CHP) production increase. This has a direct impact on the emission of green house gases throughout Europe. Because when we decrease the electricity consumption for heating, and concurrent increase the electricity generation with expanded CHP from bio mass, electricity production from coal fired power plants in Europe can be reduced. Each TWh electric heating that is connected to district heating will reduce the emission of carbon dioxide with at least 0,7 million ton per year.