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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
    • photovoltaic self-consumption photovoltaic energy

      Virtual batteries: an energy solution of the future

      Virtual batteries have emerged in the energy market as a practical and sustainable alternative to save, drive and secure the consumption of energy obtained through solar panels installed on homes.

      • Facebook Virtual batteries: an energy solution of the future
      • Twitter Virtual batteries: an energy solution of the future
      • Linkedin Virtual batteries: an energy solution of the future
      • Whatsapp Whatsapp
      Iberdrola projects photovoltaic energy

      Iberdrola Italy to supply green electricity to Italian distribution giant Pam Panorama

      Iberdrola Italia , Iberdrola's international business company in that country and Pam Panorama, a historic Italian hypermarket and supermarket company, have signed a power purchase agreement (PPA) for a total of 1,000 GWh. The agreement...

      • Facebook Iberdrola Italy to supply green electricity to Italian distribution giant Pam Panorama
      • Twitter Iberdrola Italy to supply green electricity to Italian distribution giant Pam Panorama
      • Linkedin Iberdrola Italy to supply green electricity to Italian distribution giant Pam Panorama
      • Whatsapp Whatsapp
    • PERSEO Start-up challenge photovoltaic energy

      Iberdrola and ANCES join forces in the search for start-ups to drive photovoltaic tech

      Iberdrola, through its start-up programme, Perseo , has launched a challenge to develop innovative technological solutions to drive the photovoltaic sector. The electricity company, which has around 8,000 MW of installed capacity worldwide...

      • Facebook Iberdrola and ANCES join forces in the search for start-ups to drive photovoltaic tech
      • Twitter Iberdrola and ANCES join forces in the search for start-ups to drive photovoltaic tech
      • Linkedin Iberdrola and ANCES join forces in the search for start-ups to drive photovoltaic tech
      • Whatsapp Whatsapp
      PERSEO Start-up challenge photovoltaic energy

      We’re looking for innovative solutions to drive the industry

      At PERSEO we want to leverage the talent and creativity of start-ups and entrepreneurs to develop technological solutions that drive the solar photovoltaic industry.

      • Facebook We’re looking for innovative solutions to drive the industry
      • Twitter We’re looking for innovative solutions to drive the industry
      • Linkedin We’re looking for innovative solutions to drive the industry
      • Whatsapp Whatsapp
    • energy storage photovoltaic energy electrical network hydroelectric power

      Iberdrola awards Ingeteam €350 million in purchases over the 2020-2024 period

      Iberdrola's Global Procurement Director, Ignacio Sánchez-Galán, visited Ingeteam's facilities in Beasain, Gipuzkoa today. He was accompanied by Ingeteam's CEO, Adolfo Rebollo, and Asís Canales, Iberdrola's Global Director of Resources and...

      • Facebook Iberdrola awards Ingeteam €350 million in purchases over the 2020-2024 period
      • Twitter Iberdrola awards Ingeteam €350 million in purchases over the 2020-2024 period
      • Linkedin Iberdrola awards Ingeteam €350 million in purchases over the 2020-2024 period
      • Whatsapp Whatsapp
      photovoltaic energy Iberdrola International

      Iberdrola signs €100 M green loan with BEI guaranteed by SACE for new PV plant in Sicily

      The European Investment Bank (EIB) and Iberdrola, with SACE's Archimede guarantee, have signed a new €100 M green loan agreement to build a new photovoltaic plant in Italy. This investment is an important step towards increasing renewable...

      • Facebook Iberdrola signs €100 M green loan with BEI guaranteed by SACE for new PV plant in Sicily
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