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