The emissions per GWhth produced by a thermo solar panel are calculated from Ecoinvent V2.2  (dataset: solar system, flat plate collector, multiple dwelling, hot water, CH, [unit]). The selected data set provides the emissions per installed panel (emissions panel 2011). The next formula has been used to obtain the emissions/GWhth:
The heat delivered by the solar system is 0.03766 GWh/year and it is calculated assuming a mean temperature of the water inside the panel equal to 40°C.
 Ecoinvent V2.2