Table 1.

The specifications and description of the selected building type: R2 category located in Tirana region.

	Base scenario case	Proposed case
Net area	80 m2	80 m2
Height	2.4 m	2.4 m
Volume	192 m3	192 m3
Total Envelope Area	180 m2	180 m2
Climatic zone A	HDD<1500	HDD<1500
Heating/Cooling system	Inverter-Split	Inverter-Split
Energy carrier used for DHW	Electricity	Electricity
Electricity price (€/kWh)	0.1–0.25	0.1–0.25
Wall's heat transfer coefficient $\left(W/m^2\bullet K\right)$	1.87	0.38–0.4 [30]
Window's heat transfer coefficient $\left(W/m^2\bullet K\right)$	5.2	2.0–2.2 [30]
Roof's heat transfer coefficient $\left(W/m^2\bullet K\right)$	1.0	0.35–0.38 [30]
Floor's heat transfer coefficient $\left(W/m^2\bullet K\right)$	1.2	0.5 [30]
Lighting system	Incandescent	LED
RES application	NA	PV and SWH