Photovoltaic solar energy
We are harnessing the power of the sun
We are champions of photovoltaic solar energy. At Iberdrola, we are committed to the fight against climate change, which has driven us to support renewable energy sources in order to make the energy transition a reality.
As part of the plans to grow in clean energy, solar photovoltaic technology will be supported by 18% of the investments earmarked for renewables in the Strategic Plan 2024-2026, which will increase installed solar capacity by around 2,100 MW, with a portfolio of 1,900 MW. Iberdrola had a total of 7,470 MW of photovoltaic power as per the nine months 2024.
What is photovoltaic energy?
Photovoltaic solar energy is a clean, renewable source of energy that uses solar radiation to produce electricity. It is based on the so-called photoelectric effect, by which certain materials are able to absorb photons (light particles) and release electrons, generating an electric current.
A semiconductor device called a photovoltaic cell is used for this purpose, which can be made of monocrystalline, polycrystalline or amorphous silicon, or other thin-film semiconductor materials. The cells made from monocrystalline silicon are obtained from a single crystal of pure silicon and achieve maximum efficiency, between 18% and 20% on average.
Those made from polycrystalline silicon are made in blocks from several crystals, so they are cheaper and have an average efficiency of between 16% and 17.5%. Finally, those made from amorphous silicon have a disordered crystalline network, which leads to a lower performance (average efficiency between 8% and 9%) but also a lower price.
Advantages of photovoltaic solar energy
Optimal for rural areas
A system suitable where power lines do not reach or are difficult to install
Modulable according to need
It can be produced in small generator installations and in large photovoltaic plants
Green jobs
Contributes to the creation of green jobs and local economic growth
More information
Photovoltaic energy, key in the fight against climate change
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Avangrid completes installation of 105,000 modules for its first PV plant in California
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Iberdrola begins installation of modules at Camino Solar (California)
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Iberdrola Australia enters Queensland market with Broadsound Solar Farm and Battery
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Iberdrola increases its renewable production in Portugal with two new photovoltaic plants
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Iberdrola begins producing clean energy at its True North photovoltaic plant in Texas
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Iberdrola begins installation of the Powell Creek solar plant in the United States
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Iberdrola begins construction of its first photovoltaic plant in California
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Iberdrola and FCC sign an agreement to promote photovoltaic panel recycling
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Iberdrola tests Antecursor II robot at its Villarino photovoltaic plant
How do photovoltaic plants work?
Photovoltaic solar energy is obtained by converting sunlight into electricity using a technology based on the photoelectric effect. It is a type of renewable, inexhaustible and non-polluting energy that can be produced in installations ranging from small generators for self-consumption to large photovoltaic plants. Find out how photovoltaic energy is obtained.
- Thanks to the photoelectric effect, the electromagnetic radiation emitted by the sun is converted into electrical energy
- The alternating electric energy, now suitable for consumption, is distributed along transmission lines
- Photovoltaic panels are formed from cells that absorb light particles (photons) and release electrons or direct electric current
- The continuous electrical energy produced by the panels is converted into alternating current by the inverters
- Transformers raise the electricity to a medium voltage (up to 36 kV)
Our most emblematic photovoltaic solar energy projects
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True North, Avangrid's largest solar photovoltaic project in Texas
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Francisco Pizarro, the largest photovoltaic plant in Europe
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Santiago, our largest photovoltaic plant in the world
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Lund Hill, Washington's biggest solar project
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The Cedillo photovoltaic project, a real engineering challenge
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Núñez de Balboa, one of the biggest photovoltaic plant in Europe
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What is photovoltaic self-consumption?
Photovoltaic self-consumption occurs when individuals or companies consume energy produced in photovoltaic generation installations close to the point of consumption. In addition to the solar panels themselves, photovoltaic self-consumption installations are made up of other elements such as inverters, cables, connectors and, optionally, batteries. This type of consumption not only saves on electricity bills, but also contributes to curbing climate change by using renewable energies.
There are two types of photovoltaic self-consumption depending on the destination of the energy that the owner of the installation does not use: self-consumption without surplus, which does not involve the discharge of surplus energy into the grid; and self-consumption with surplus, which allows the injection of surplus energy into the transmission grid.
More about solar energy
What is solar energy?
Solar energy is a renewable and inexhaustible source that allows us to generate electricity from the radiation that reaches us from the sun. Committing to solar energy means committing to the fight against climate change and accelerating decarbonisation.
Discover solar energyWhat is solar energy?
Solar energy is a renewable and inexhaustible source that allows us to generate electricity from the radiation that reaches us from the sun. Committing to solar energy means committing to the fight against climate change and accelerating decarbonisation.
Discover solar energyArticles from our guest authors
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- ANTARES, accelerating the development of renewable energies
Ester Cámara
Estefanía Segovia
- ANTARES, accelerating the development of renewable energies
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Iberdrola is making progress in its photovoltaic deployment in Portugal with the completion of the construction of the Conde plant, located in the municipality of Palmela, in the district of Setúbal (Lisbon region). With an installed capacity...
Iberdrola has installed one of its photovoltaic projects in Castilla y León (Spain), a new wind farm and photovoltaic plant in Villarino, which adds 50 MW of green energy to its portfolio. Once the infrastructure is up and running, it generates enough clean energy to power the equivalent of 27,000 homes and avoid emitting 12,000 tons of CO₂/year into the atmosphere.
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Facebook Iberdrola reinforces its commitment to Castilla y León with a new photovoltaic plant in Villarino
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Linkedin Iberdrola reinforces its commitment to Castilla y León with a new photovoltaic plant in Villarino
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As part of our commitment to renewable energies in Spain, we have commissioned two photovoltaic plants in Cedillo, Extremadura, with a combined installed capacity of 100 MW, plus a new 375 MW plant currently under construction. These facilities are designed to have the lowest possible environmental impact.
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Facebook Photovoltaic plants in Cedillo, an engineering challenge with minimum environmental impact
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Iberdrola has recently collected the solar honey produced at the Campo Arañuelo III photovoltaic plant in Cáceres, a new milestone in the solar honey production project that the company started in 2020 together with the Extremaduran company...
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Facebook We collect the world's first organic solar honey at the Campo Arañuelo
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Iberdrola has started the commissioning in Australia of its first wind-solar hybrid project in the world, Port Augusta , after being registered in the National Electricity Market Registry by the Australian Energy Market Operator. This...
Iberdrola has commissioned the first smart agrovoltaic plant in Spain at the González Byass and Grupo Emperador vineyards located in the town of Guadamur, Toledo. This innovative installation allows the layout of the modules to be adapted to...