Photovoltaic solar energy

Photovoltaic energy is created with solar energy and its conversion into electrical energy using photovoltaic cells.


Photovoltaic cells are devices which consist of light-sensitive metals that emit electrons when photons make impact with them. They convert light energy into electrical energy; the cell has two terminals that connect to an external circuit to extract the electrical current which has been produced.


These cells are arranged in sequence on panels or solar modules in order to obtain a suitable voltage for electrical appliances; the panels capture solar energy and transform it directly into direct current (DC) electricity.


The investor is responsible for transforming the direct current produced by the photovoltaic cells into alternating currents to allow connection to the network.


Environmental advantages:


    • These cells do not generate air pollutants, nor do they produce acid rain, the greenhouse effect, etc.
    • Silicon, the base element for the production of photovoltaic cells, is abundant. Therefore it is not necessary to intensively exploit deposits.
    • Being a fundamental local energy, the construction of tracks, cables and poles is avoided. It does not require large power lines, and its visual impact is reduced. It does not have any excessive or necessary ground requirements either; 1kWp takes up between 10 and 15 m2.
    • The energy is produced with absolutely no noise pollution.
    • This procedure does not require any additional supply, such as fuel, nor is there a significant presence of other resources, such as water or wind.
    • There is an endless supply.


Socio-economic benefits:


    • The installation is simple.
    • It requires little/minimal maintenance.
    • It is a durable source; solar panels can last about 30 years.
    • It withstands extreme weather conditions such as hail, wind, temperature, humidity, etc.
    • There is no dependence on fuel producing countries.
    • The excess supply of electricity will be sold to a power company.
    • It can tolerate power increases by incorporating new photovoltaic modules.


Spain has one of the highest levels of solar radiation in Europe and has an extensive potential market inside networked systems.