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Photovoltaics
What are Photovoltaic systems?
Photovoltaic systems (solar PV) utilise the sun’s energy, converting this to electricity which is stored in cells. PV systems do not need direct sunlight and continue to generate some electricity even on cloudy days because they only require daylight to operate.
What are the benefits?
PV systems can substantially reduce C02 emissions and produce no greenhouse gases. In areas of high solar gain, there can be a marked cost saving on fuel bills.
How does it work?
Photovoltaic systems use PV cells to convert sunlight into power. The cells generate an electric field across layers of a semi-conductor. The degree of power generated depends on the intensity of light, with more electricity being produced on sunny days and less on dull days or if the panels are in shaded for part of the day. Systems can be grid-connected, requiring very little maintenance, or standalone, requiring a higher degree of maintenance on system components such as storage batteries.
Funding and grants
As part of the Low Carbon Building Programme (LCBP), the Department for Business Enterprise and Energy Reform (BERR) are making grants available only to those who use a certified installer and products. Grants are available for private householders, community organisations, public, private and non-profit sectors. For more information about LCBP, visit the BERR website at www.lowcarbonbuildings.org.uk
More information - Energy Saving Trust: www.saveenergy.co.uk