MARTIN BOND / SCIENCE PHOTO LIBRARY MARTIN BOND / SCIENCE PHOTO LIBRARY
Solar power station. Array of solar panels (photovoltaic cells) forming a solar power station (lower centre) next to a railway line . The cells contain a semiconducting material which converts sunlight directly into electricity. Solar power is a renewable, inexhaustible source of energy and does not contribute to global warming. Solar energy is relatively cheap, as once the panels are installed, they continue to produce electricity indefinitely. Photographed in Gordola, Switzerland.
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