Three-year PV system performance in Mexico City

In the Research Center (CINVESTAV), located north Mexico City was evaluated a 60 kWp photovoltaic (PV) system. The PV system energy performance ratio (PR) is reported together with the measured solar irradiation, ambient and PV module temperatures for three years. A finally calculated average PR was 86.8% for the 36 months. The average daily energy produced by the PV system during 3 years was 260.45 kWh/day and an average accumulated energy of 95,064.25 kWh per year. If we consider the factor of 1% degradation per year in the generated power, the system will generate about 1,311,887 kWh after 15 years, or equivalent to 87,459 kWh as an average per year.