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  • Term: photovoltaic
    Key Words: ,
    Related Terms:

    photovoltaic!


    photovoltaic

    Comprehensive Analysis



    1) "Photovoltaic" -- As to photovoltaic

    pho·to·vol·ta·ic
    Pronunciation: -väl-'tA-ik, -vOl-
    Function: adjective
    Etymology: International Scientific Vocabulary
    : of, relating to, or utilizing the generation of a voltage when radiant energy falls on the boundary between dissimilar substances (as two different semiconductors)
    - photovoltaic noun
    Pronunciation Symbols

    Photovoltaics, or PV for short, is a solar power technology that uses solar cells or solar photovoltaic arrays to convert energy from the sun into electricity. Photovoltaics is also the field of study relating to this technology.

    Solar cells produce direct current electricity from the sun’s rays, which can be used to power equipment or to recharge a battery. Many pocket calculators incorporate a solar cell.

    When more power is required than a single cell can deliver, cells are generally grouped together to form “PV modules”, or solar panels, that may in turn be arranged in arrays. Such solar arrays have been used to power orbiting satellites and other spacecraft and in remote areas as a source of power for applications such as roadside emergency telephones, remote sensing, and cathodic protection of pipelines. The continual decline of manufacturing costs (dropping at 3 to 5% a year in recent years) is expanding the range of cost-effective uses including roadsigns, home power generation and even grid-connected electricity generation.

    Large-scale incentive programs, offering financial incentives like the ability to sell excess electricity back to the public grid ("feed-in"), have greatly accelerated the pace of solar PV installations in Spain, Germany, Japan, the United States, Australia, South Korea, Italy, Greece, France, China and other countries.

    • 1 Current development
    • 2 PV in buildings
      • 2.1 Example of PV in building
    • 3 Solar-powered vehicles
    • 4 PV power stations
    • 5 Worldwide installed photovoltaic totals
    • 6 PV power costs
    • 7 Environmental impacts
      • 7.1 Greenhouse gases
      • 7.2 Cadmium
      • 7.3 Energy return on investment
    • 8 Grid parity
    • 9 Financial incentives