| How does Solar PV work? Unlike Solar Thermal panels that need a relatively high intensity of sunlight to produce enough ‘meaningful’ energy to heat your hot water or central heating, solar PV will produce electricity even in low light conditions, but obviously the more intense the day light, the more electricity will be produced. Within the solar modules are two layers one with positive charged electrons and one with negatively charged electrons. When day light hits these cells the electrons become attracted to each other and begin to move across the layers. The result of the electrons moving around produces an electrical field. The more intense the light is, the more the electrons move around and more electricity is produced. Solar panels can be sited almost anywhere, on roofs, walls or on ground mounted modules in a garden or field, but orientation and angle are critical to optimise the panels output. |
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| With global warming and climate change becoming an ever increasing concern, many countries around the world have made significant commitments to reducing their CO2 emissions. By the year 2050 the UK government has made a commitment to at least 50% of all domestic and commercial energy requirements to be produced by renewable sources. In order to get people to invest in renewable technologies the government introduced the FIT (Feed In tariff) in April 2010 which applies to electricity producing technologies and in June 2011 they are introducing the RHI (Renewable Heat Incentive) for heat generating technologies. In essence what this means is that you do not just benefit from the energy saving you make by using renewable technologies, on top of this the energy suppliers pay you for everything you produce whether you use it or not, but obviously the more you use the more you benefit from reduced energy bills. For example using a 2.8Kw Solar PV array (Electricity producing modules) that would cost around £12,000 you could potentially return savings and cash payments of around £50,000. The FIT and RHI payments are guaranteed for 25 years, are TAX FREE and index linked. To Ensure that consumers are protected and system benefits are not being ‘over sold’ the government have also introduced the MCS scheme to apply to all renewable technology manufacturers, wholesalers, designers and installers. What this scheme aims to achieve is the following:
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