Solar Energy is the main source of energy on Earth and renewable energy par excellence. It is an abundant, free and unlimited energy.

Taking advantage of the Photovoltaic Effect experienced by certain materials, electricity is obtained directly from solar radiation.


With the electrical energy produced by the photovoltaic modules there are many applications that can be derived:

  • Instant self-consumption facilities: These are the most common facilities today. Having a connection to the electricity distribution network incorporates photovoltaic panels for a partial of the total power of the installation. These are systems that require a small investment and that cover the base of the electrical consumption of an installation. Initially, 25-30% reduction in company consumption (and the corresponding bill) is achieved. This reduction can often be greatly enhanced by incorporating load management systems that automate the start-up of certain consumptions to take advantage of times of maximum solar output.
  • Self-consumption facilities with accumulation: By adding a few small batteries to the previous installations, we can store the surplus that we have during the day to consume when the sun has set or at times when the power is higher than that given by the PV modules. In this way, the use of the energy produced is increased to almost 100% and the reduction in the consumption of the grid is greatly increased, which can be more than 80%. The connection to the company network is maintained but for support, the bulk of the consumption is photovoltaic.
  • Isolated facilities: They are called installations that do not have a connection to the distribution network either because it does not reach the site or, simply, because they choose to ignore it. They are 100% autonomous installations. Some examples would be:
    • Rural electrification: The minimal operating costs, the long installation life and the autonomy of these systems make it a widely used solution as the main source of electricity supply, wherever the distribution network is out of reach. homes or for older consumers.
    • Pumping water: Small PV systems can very easily and economically solve the power supply of water wells.
    • Many other applications: small consumers, large installations, with or without access to the central distribution network, ... In many cases, very interesting solutions can be proposed.
    • Support with mini-wind: Particularly in isolated photovoltaic installations, support with small electric wind turbines may be interesting at times, increasing production hours and reducing the need for battery accumulation.

Photovoltaic installations are suitable for any type of consumer, from single-family homes to large industrial consumers.

The production of hot water can also be done with photovoltaic solar energy, either with electrical resistance or with a heat pump, so that it can comply with the Technical Code (CTE HE4). With a single installation and a similar investment, the solar ACS is produced and, in addition, it also saves on electricity.

Apart from the great contribution to the sustainability of our energy consumption, photovoltaic energy is an increasingly interesting investment from the economic point of view, obtaining more and more competitive amortization.