The technical specification calculates the energy demand for space heating and domestic hot water production if there are subsystems that provide useful thermal energy generation from renewable energy or generation methods other than the flame combustion of fossil fuels treated in UNI / TS 11300-2.
The following subsystems for production of heat and / or electricity are considered:
- Solar thermal systems;
- Combustion biomass generators;
- Heat pumps;
- Photovoltaic systems;
- Cogenerators.
They are also considered the district heating substations.
