Electricity loss due to wires, inverter, extremely high temperature, weather conditions and other factors were taken into account when calculating the productivity. The calculations were based on the weather conditions in the area over the past 15 years, as well as the quality characteristics of the solar panel inverters. The level of annual productivity may deviate from the figures presented, both up and down, depending on the time of year, the cleanliness of the panel, the level of cloudiness, the presence of dust, and so on. The savings were calculated based on the daily electricity tariff of 45 drams.