In the summary of results, the CO₂ emissions saved by the solar system are calculated. To perform this calculation, it is necessary to determine the type of primary energy saved by the solar system. TSOL uses emission factors based on the energy source to calculate the CO₂ emissions of a heating system. The following emission factors are utilized in TSOL:

Energy Source	Heating Value	Emission Factor
Oil	36722 kJ/l	7.32748 g CO₂/kJ
Gas	41100 kJ/m³	5.14355 g CO₂/kJ
District Heating		5.14355 g CO₂/kJ
Wood Pellet	15490 kJ/kg	CO₂-neutral