Solar PV Panels

Solar Photo voltaic

Solar PV [Photovoltaic] implements a technology in which direct light is converted into electricity. This option uses solar cells, usually placed on the roof, and made up of layers of semi conducting material. An electric field is created when the sun’s UV rays fall on the layers of the cells, causing electricity to flow. The stronger the sun, the more electricity is produced.

An average Solar PV system could cost around £4,000- £9,000 installed. An average domestic system would typically be between 1.5 and 2 kWp; panels covering 10-15 sq m could produce about a third of an average family's electricity - saving on standard electricity costs.

A typical home Solar PV system could save around 1200 kg of CO₂ per year.

April 2010 the government introduced feed in tariffs, under which householders earn non-taxable income for generating electricity, regardless of whether or not they use it. For example a 'retrofit' system of less than 4 kWp will earn 43.3p for every kWh generated. This can then be used free - saving up to 15p relative to what it would have cost to buy peak rate from the local utility company. If the electricity is not used, it can be exported and sold back to the grid for 3.1p a kWh.

The feed-in tariff is guaranteed by the government for 25 years, at the rate prevailing when you install the system, meaning that every year until 2035 you can earn 43.3p per kWh generated on installations compleed before April 2012.

Note that if you install the system after April 2012, the feed in tariff will be nearly 9% lower, at 37.8p. In this case you will earn 37.8p per kWh generated every year until 2037.

Planning permission is not usually required unless you are in a conservation area however it is always best to consult your local planning office. if you live in a Listed Building, or a building in Conservation Area or World Heritage Site. If you live in Wales, Scotland or Northern Ireland you will need to consult your local authority if considering an installation