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    • Photovoltaic solar energy

    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 7,999 MW of photovoltaic power at the end of the first quarter of 2025.

    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.

    energía fotovoltaica

      

    Advantages of photovoltaic solar energy

    1 2 3 4 5 6 Illustration
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    Inexhaustible and non-polluting

    It does not consume fossil fuels and does not generate waste

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    Universal scope

    Can be obtained anywhere in the world 365 days a year

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    Optimal for rural areas

    A system suitable where power lines do not reach or are difficult to install

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    Storable

    Allows the installation of batteries to store surplus electricity

    More information
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    Modulable according to need

    It can be produced in small generator installations and in large photovoltaic plants

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    Green jobs

    Contributes to the creation of green jobs and local economic growth

    More information

     SEE INFOGRAPHIC: Advantages of photovolaic solar energy [PDF]

    Photovoltaic energy, key in the fight against climate change

    • Planta fotovoltaica
      Iberdrola Mexico signs a PPA with Alstom to drive its commitment to sustainability
    • Iberdrola Italia
      Iberdrola Italia inaugurates a new photovoltaic plant
    • Neoenergia and the Federal Government of Brazil sign an agreement to provide 100% renewable energy to the Palace of Alvorada
    • Iberdrola builds its sixth photovoltaic installation in the state of Oregon, in the U.S.
    • berdrola signs a 100-million-euro green loan with BEI, backed by SACE, for a new PV plant in Sicily
    • Camino Solar
      Iberdrola begins installation of modules at Camino Solar (California)
    • Avangrid completes installation of 105,000 modules for its first PV plant in California
    • Port Augusta Solar
      Iberdrola Australia enters Queensland market with Broadsound Solar Farm and Battery
    • Montechoro
      Iberdrola increases its renewable production in Portugal with two new photovoltaic plants
    • True North
      Iberdrola begins producing clean energy at its True North photovoltaic plant in Texas

    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.

    Ilustración
    • 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)

     SEE INFOGRAPHIC: How do photovoltaic plants work? [PDF]

    Our most emblematic photovoltaic solar energy projects

    • True North
      True North, Avangrid's largest solar photovoltaic project in Texas
    • Francisco Pizarro
      Francisco Pizarro, the largest photovoltaic plant in Europe
    • Proyecto fotovoltaico Santiago y Hermosillo
      Santiago, our largest photovoltaic plant in the world
    • Lund hill
      Lund Hill, Washington's biggest solar project
    • Cedillo
      The Cedillo photovoltaic project, a real engineering challenge
    • Nuñez de Balboa
      Núñez de Balboa, one of the biggest photovoltaic plant in Europe
    And also
    • 1 We develop a photovoltaic plant in Salamanca
    • 2 We have a new plant in Villarino (Castilla y León)
    • 3 Otero, the second largest photovoltaic plant in Europe
    • 4 Ceclavín, our third photovoltaic project in Extremadura

    Do you want to work with us?

    Renewable energy jobs

    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

    Qué es la energía solar

    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 energy
    Qué es la energía solar

    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 energy
      • 10 relevant terms of photovoltaic energy
      • How do photovoltaic solar panels work
      • Photovoltaic cells: evolution and types
      • Bifacial solar panels
      • Solar resource measurement
      • Solar Communities
      • Agrovoltaic energy
      • Solar radiation
      • Recycling of solar panels
      • Floating Solar PV
      • History of solar energy
      • Virtual batteries: an energy solution of the future

    Articles from our guest authors

      • ANTARES, accelerating the development of renewable energies
        Foto del Autor
        Ester Cámara
        Foto del Autor
        Estefanía Segovia
      • Do you know about floating photovoltaic solar energy?
        Foto del Autor
        César Yanes
    • Iberdrola México photovoltaic energy

      Iberdrola Mexico signs a PPA with Alstom to drive its commitment to sustainability

      Iberdrola Mexico, a country-based company, has installed photovoltaic panels at Alstom's plant in Sahagún, helping Alstom, a world leader in smart and sustainable mobility, take a major step towards implementing its sustainability...

      • Facebook Iberdrola Mexico signs a PPA with Alstom to drive its commitment to sustainability
      • Twitter Iberdrola Mexico signs a PPA with Alstom to drive its commitment to sustainability
      • Linkedin Iberdrola Mexico signs a PPA with Alstom to drive its commitment to sustainability
      • Whatsapp Whatsapp
      Iberdrola projects biodiversity photovoltaic energy

      Iberdrola Italia inaugurates a new photovoltaic plant

      Iberdrola Italia, Iberdrola's international business company in Italy, inaugurates its third photovoltaic plant in Tarquinia (Italy) with the aim of boosting the production of clean energy to promote the industrial electrification of the...

      • Facebook Iberdrola Italia inaugurates a new photovoltaic plant
      • Twitter Iberdrola Italia inaugurates a new photovoltaic plant
      • Linkedin Iberdrola Italia inaugurates a new photovoltaic plant
      • Whatsapp Whatsapp
    • Neoenergia photovoltaic energy Brazil

      Neoenergia and the Federal Government of Brazil sign an agreement to provide 100% renewable energy to the Palace of Alvorada

      Neoenergia, Iberdrola's subsidiary in Brazil , in partnership with the Federal Government of Brazil, and through the Civil House, the Ministry of Mines and Energy (MME), and the Presidency of the Republic, will begin this month the...

      • Facebook Neoenergia and the Federal Government of Brazil sign an agreement to provide 100% renewable energy to the Palace of Alvorada
      • Twitter Neoenergia and the Federal Government of Brazil sign an agreement to provide 100% renewable energy to the Palace of Alvorada
      • Linkedin Neoenergia and the Federal Government of Brazil sign an agreement to provide 100% renewable energy to the Palace of Alvorada
      • Whatsapp Whatsapp
      photovoltaic energy Iberdrola España

      Iberdrola España hits 1,000 solar communities in Spain

      Iberdrola España , Iberdrola's subsidiary in Spain, has now reached 1,000 solar communities, making self-consumption a reality for more than 100,000 families. In 2015, the company was a pioneer in offering its customers self-consumption. Since...

      • Facebook Iberdrola España hits 1,000 solar communities in Spain
      • Twitter Iberdrola España hits 1,000 solar communities in Spain
      • Linkedin Iberdrola España hits 1,000 solar communities in Spain
      • Whatsapp Whatsapp
    • photovoltaic self-consumption photovoltaic energy

      Adelaide Airport triples capacity of its self-consumption system thanks to Iberdrola Australia

      Iberdrola Australia , Iberdrola's international business company in Australia, has finished setting up more than 3,800 solar panels on the rooftops of Adelaide Airport's domestic and international terminal, almost tripling its previous...

      • Facebook Adelaide Airport triples capacity of its self-consumption system thanks to Iberdrola Australia
      • Twitter Adelaide Airport triples capacity of its self-consumption system thanks to Iberdrola Australia
      • Linkedin Adelaide Airport triples capacity of its self-consumption system thanks to Iberdrola Australia
      • Whatsapp Whatsapp
      Iberdrola México photovoltaic energy Mexico

      Iberdrola Mexico and Bayer commission a photovoltaic self-consumption system to produce sedes

      Iberdrola Mexico has commissioned a Smart Solar photovoltaic self-consumption system installed for the multinational pharmaceutical Bayer at its vegetable seed production plant in Chiapas, Yax-Nah (‘green house’ in Mayan). The system has an...

      • Facebook Iberdrola Mexico and Bayer commission a photovoltaic self-consumption system to produce sedes
      • Twitter Iberdrola Mexico and Bayer commission a photovoltaic self-consumption system to produce sedes
      • Linkedin Iberdrola Mexico and Bayer commission a photovoltaic self-consumption system to produce sedes
      • Whatsapp Whatsapp
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