The earth receives about 1,366 watts of direct solar radiation per square meter
So what is Solar PV?
PV is short for photovoltaics, it is a method of generating electrical power by converting the sun’s radiation into direct current electricity. Solar panels are made of a thin layer of semi-conducting material between a sheet of glass and a polymer resin. When exposed to daylight the semi-conducting material becomes ‘energised’ and this produces electricity. The electricity produced by the PV panels is direct current (DC). Before it can be used in the home it has to be converted to safer alternating current (AC), using a box called an inverter. Electricity generated by your solar panels feeds directly into your house, so it will power any appliances you use during daylight hours. You probably won’t use all the energy you generate, so what’s left over will be exported into the grid. Your energy supplier will pay you a set rate for every kWh you generate. Each solar PV panel typically has an area of around 1.2 to 1.8 square metres, depending on the manufacturer, and will produce about 180-250 Watts. So to produce 1kW of power, you would need four or five solar panels. The more panels you can fit on your roof, the more expensive the system will be to install, but the more electricity you will produce. Panels are pretty much maintenance-free and should last for at least 20 years. A display monitor can be connected inside your home so you can see a real-time display of how much electricity the system is generating.
Your home will take any extra electricity it requires from the National Grid as normal if you need more power than the panels are producing. To make the most out of your panels its advised to use appliances such as dishwashers, washing machines and tumble dryers during the day to take advantage of the free electricity generated.
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PV Plus are specialists in Solar Technologies. Our in house design team are on hand to give you a free consultation to discuss your requirements, give advice and answer any questions you have.
Solar energy is becoming the key technology for the 21st century.
The depletion of resources, environmental degradation and rising costs are just a few of the most obvious draw-backs of fossil fuels. Renewable energies are the only way to guarantee a sustainable energy supply for the future. Throughout our history electricity rates have been continusoly rising, within a decade they could double. The sun, however, never sends you a bill. Ten years from now the energy you are collecting on your roof will still be free. Due to the growing demand for renewable energy sources, the manufacturing of solar panels and PV solar panel systems has advanced considerably in recent years. Driven by advances in technology and increases in manufacturing scale and sophistication, the cost of PV has declined steadily since the first solar cells were made. Financial incentives such as feed-in tariffs for solar-generated electricity, have supported solar PV installations in the UK. Solar photovoltaic production has been increasing by an average of more than 20 percent each year since 2002, making it the world’s fastest-growing energy technology
Benefits Of Solar Energy
- The sun will continue to shine for another 4 billion years, suppling free solar energy in the process.
- The sun produces 10,000 to 15,000 times more energy then the earths daily requirments.
- Solar power is pollution-free during use. Production end-wastes and emissions are manageable using existing pollution controls.
- A solar power system can help you avoid ever-increasing energy costs.
- Solar energy does not depend on electricity grids and fuels.
- Solar electric generation has the highest power density among renewable energies.
- PV installations can operate for many years with little maintenance or intervention after their initial set-up, so after the initial capital cost of building any solar power plant, operating costs are extremely low compared to existing power technologies.