*4.5. Analysis of Self-Consumption Levels of Electricity Generated in Potential PV Installations*

The study of the potential degree of self-consumption of electricity from own photovoltaic installation confirms the above observations. Apart from the H1 and C1 cases, in the pandemic period, there is a higher value of the degree of electric energy self-consumption compared to the comparative period. The course of the variability of the coefficient is shown in Figures 17–19.

The highest value of the self-consumption coefficient, at the level of 52%, is for the C1 cafe and the R5 restaurant. The next ones are the cases of C3 (50%), R1 and R4 (49%), R3 and C2 (47%) and R2 and H2 (45%).

**Figure 17.** Variability of the percentage of self-consumption of electricity produced in the potential photovoltaic installation for the previous 8.760 h in the pre-pandemic period. Source: own study.

**Figure 18.** Variability of the percentage of self-consumption of electricity produced in the potential photovoltaic installation for the previous 8.760 h during the pandemic period. Source: own study.

**Figure 19.** Average indicator of self-consumption of energy from PV and its difference in the pre-COVID-19 and COVID-19 periods in the analyzed case studies. Source: own study.
