Reference Case
The electricity and heat demand are covered by a hot water boiler and grid supply in the Reference Case.
Variant PV + Heat Pump
In the Variant, a Photovoltaic system and a Heat Pump are added.
Key Figures
In the PV + Heat Pump variant, the Self Sufficiency Rate rises to more than 26 %, and the Self Consumption Rate increases to over 76 % thanks to the new systems. This is achieved through the PV system’s electricity generation—averaging more than 11.5 kW—and the heat pump’s average heat output (Supplied heat) of approximately 25.5 kW.
Variant Comparison
The Variant comparison juxtaposes the economic data of the Variant with that of the Reference Case. The additional system reduces CO2 emissions by nearly 62 %, primary energy consumption by approximately 42 %, and the amount of negative Cash flow by 40 %. These measures result in a Payback time (amortization period) of less than 10 years.
