Spain, with around 300 days and 2,500 hours of sunshine per year, that is, an average of 8.2 hours of sunshine per day, is one of the European countries that receives the most sunlight, which is a clear advantage for energy photovoltaics in our country.
Although it is true that in autumn the incidence of the sun is less powerful than in spring and, above all, in summer - about 29% less solar energy is produced than in the summer - since the days become shorter and radiation varies, solar photovoltaic energy remains an efficient source during this season.
From Powen they explain that the performance of the photovoltaic installation does not depend exclusively on temperature, but on exposure to sunlight. The geographical location, the weather or the conditions to which the panels are exposed are factors to take into account.
In autumn, the optimal conditions for the production of solar energy occur, since moderate temperatures help the system work without overheating. In this sense, very high temperatures reduce the performance of solar panels, with 25ºC being ideal to achieve greater productivity. So much so that performance decreases by 1% for every 2ºC that the temperature increases.
However, the time of year and temperature are not the only determining factors in the production of photovoltaic energy. According to POWEN experts, three other aspects to take into account to get the most out of the installation are:
Regular maintenance and cleaning: to ensure optimal performance of the solar panels, especially in a time like autumn, where dust, dirt and fallen leaves from trees can accumulate and clog the panels, thus reducing the amount of sunlight that they can capture.
Angle and orientation: adjusting them to the changing position of the sun, so that the panels receive maximum sunlight, increases the efficiency of the system and significantly improves the energy production of the installation.
Storage capacity: During the summer months, when the days are longer and solar intensity is higher, photovoltaic systems can generate a considerable amount of energy. Therefore, in autumn, with shorter days and lower temperatures, the function of storing surplus energy in batteries is essential.
The efficiency of photovoltaic energy is also synonymous with savings, since, according to data from the Institute for Energy Diversification and Saving (IDAE), an average home in Spain that installs a photovoltaic solar system could save between 40% and 60%. % of your electric bill. This translates into an annual reduction of between 300 and 600 euros.
Likewise, beyond the photovoltaic installation, good daily practices in terms of energy in the business and personal spheres also contribute to energy savings and efficiency, as recalled by the commemoration of World Energy Saving Day, which will be celebrated on December 21. October.