Solar Photovoltaic cells, also known as Solar PV, are silicon wafer based panels that absorb energy from the sun and then transfer that energy to your home. When photons of light hit the silicon wafer, they tip them of their chemical balance, creating a movement of protons and electrons in opposite directions, thus generating an electrical current. Solar PV cells are already used in some common appliances such as watches and calculators. Naturally, the domestic or commercial panels come in larger sizes to provide sufficient output. Over the years, some solar photovoltaic cells have been used successfully to generate electricity for very large buildings and other installations including the National Grid. The Planning Considerations of Solar Photovoltaic Solar photovoltaic panels can be installed on the roof, along a wall of the property or as standalone systems. Before buying and installing the panels, however, it is essential to make sure the user understands the installation regulations in the local area. Most domestic installations in England have been cleared for solar PV panel systems and English homeowners can also install the panels as standalone systems, so long as they meet certain criteria (namely avoiding conservation areas or listed buildings). In Scotland, Wales or Northern Ireland, the local governments are still working out the relevant laws. In most cases it is wise to check with your local authority before commissioning the installation of the solar cells. Reasons to Use Solar Photovoltaic There are several unique benefits to solar PV cells. One of the key benefits is the savings on electrical utility bills. Other savings are equally important - PV cells save around 1.2 tonnes of carbon dioxide each year, as they produce virtually no greenhouse gases. Once installed, the solar panels protect the user from national grid power dependency. In other words the system shields the user from power outages and disruption to the electricity system. Solar power is therefore an attractive proposition for installations where the National Grid power is expensive or in remote areas (such as farms, caravans or research outposts). How to Install Solar Photovoltaic Solar photovoltaic cells need to be installed by a professional installation crew. Professional installers must be certified by the Low Carbon Buildings Programme. It is not recommended to try and install the solar panel cells unless you are fully trained and qualified. The cells are typically very heavy and they have to be attached to a separate support system that must be constructed and attached carefully to the roof. A professional installer will understand the local electrical and safety codes and can ensure that the solar PV units are meeting the requirements of the code. With the increasing public awareness to global warming and climate change, there is substantially more focus placed on finding energy generation options that are not reliant upon fossil fuels. Of the alternative energy options currently available (wave, wind, hydrogen, solar, nuclear), solar power is considered to be the most cost effective and with solar panels dropping in price due to competition, this technology is likely to become ever more popular. About the Author: Tal Potishman, editor of Heating Central, writes articles about central heating, plumbers, Harrow boiler underfloor heating and solar thermal. He focuses on helping cut costs by consulting on efficient heating. Help battle Climate Change and Offer Free Electricity