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  • Solar panel

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    Solar PV modules mounted on a flat roof. Two solar hot water panels on a rooftop Solar PV modules (top) and two solar hot water panels (bottom) mounted on rooftopsPhotovoltaic solar panels absorb sunlight as a source of energy to generate electricity. A photovoltaic (PV) module is a packaged, connected assembly of typically 6x10 photovoltaic solar cells. Photovoltaic modules constitute the photovoltaic array of a photovoltaic system that generates and supplies solar electricity in commercial and residential applications. Each module is rated by its DC output power under standard test conditions (STC), and typically ranges from 100 to 365 Watts (W). The efficiency of a module determines the area of a module given the same rated output an 8% efficient 230 W module will have twice the area of a 16% efficient 230 W module. There are a few commercially available solar modules that exceed efficiency of 24% A single solar module can produce only a limited amount of power; most installations contain multiple modules.

  • Solar power

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    Solar power is the conversion of energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaic cells convert light into an electric current using the photovoltaic effect. Photovoltaics were initially solely used as a source of electricity for small and medium-sized applications, from the calculator powered by a single solar cell to remote homes powered by an off-grid rooftop PV system. Commercial concentrated solar power plants were first developed in the 1980s. The 392 MW Ivanpah installation is the largest concentrating solar power plant in the world, located in the Mojave Desert of California. As the cost of solar electricity has fallen, the number of grid-connected solar PV systems has grown into the millions and utility-scale solar power stations with hundreds of megawatts are being built. Solar PV is rapidly becoming an inexpensive, low-carbon technology to harness renewable energy from the Sun.

  • Photovoltaic system

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    inverter and other BOS components in Vermont, U.S.Solar array on rooftop in Hong KongBIPV on balcony in Helsinki, Finland rooftop system in Boston, United Statessolar park in the United Kingdom tracker with CPV modules in Golmud, ChinaTopaz Solar Farm, one of the world’s largest PV power station, as seen from space Large commercial flattop systemSolar farm at Mt. Komekura, JapanPV system on Germany's highest mountain-top Photovoltaic power systems and components:Top: solar string inverter and other BOS components Solar array on rooftop in Hong Kong, China BIPV on balcony in Helsinki, FinlandMiddle: rooftop system in Boston, United States Westmill solar park in the United Kingdom Dual axis tracker with CPV modules Topaz, one of the world’s largest solar power station, as seen from spaceBottom: commercial rooftop PV system of about 400 kWp Power plant on Mt. Komekura, Japan Solar PV system on Zugspitze, Germany's highest mountain-top A photovoltaic system, also PV system or solar power system, is a power system designed to supply usable solar power by means of photovoltaics.

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