Comparative Analysis of the Use of Renewable Energy Sources in Selected Single-family Houses

Renewable energy sources play a substantial role in producing electricity and heat in single-family homes while becoming independent from external energy suppliers. This is primarily due to economic advantages, i.e., reducing electricity costs. This article aims to compare two single-family homes powered by photovoltaic systems and, additionally, a heat pump. Both buildings were located near each other in the same climate conditions (Swietokrzyskie Province, Poland). The analysis compared electricity production from the photovoltaic systems for two different module models with a maximum power of 280 W and 340 W for both buildings. Additionally, an analysis of electricity production was carried out for the monthly installation operation in the summer and autumn periods. The monthly electricity consumption from the heat pump in the autumn and winter periods was presented. In the last step, an economic analysis of the return on investment for both installations was presented. It turned out that despite the difference in investment costs, the payback period for both buildings is between 6-7 years.