What Solar Solution Will Suit Me?
You'll need to put some time into investigating which solar panel system will be appropriate for your needs and home
. One sort of solar panels will heat water and another sort generates electricity (photovoltaic panels). In just one hour the sun can transmit more energy to the earth's surface than the world uses in a year. You could use solar technology to make use of this costless source of energy to generate electricity and hot water for your home.
Solar technology is still pricey, but a government scheme (called the feed-in tariffs or FIT) means you can now receive cash for the electricity you generate using photovoltaic solar panels.
Passive solar power involves designing or redesigning your home to make the most of the sun. You could add an spare south-facing window or more insulation to your roof so you can better capture the sun's heat, and for longer. As you would expect these things can only be added when the house is first built or refurbished.
When solar collectors or panels are installed to amass energy we call this active solar power. Solar water heating and photovoltaic (PV) solar panels are the two principal types of active solar panel systems.
Solar water heating and solar PV are quite dissimilar, even though they might look similar, and both consist of panels on your roof. Energy from the sunshine is used by solar electricity or solar PV to produce electricity which you can then use in your home or export onto the grid. The government will support you with generous financial support under the feed-in tariff scheme as Solar PV is an costly technology (12,000 for an average system).
Solar heating or solar thermal uses energy from the sun to heat up water. It is commonly used to heat up your domestic hot water system. Solar water heating is cheaper than solar PV and costs between 3,000 and 5,000. It doesn't, nevertheless, presently qualify for any grants or financial incentive but should do so, by October 2012, under the Renewable Heat Incentive (RHI).
There are four basic kinds of PV panel: monocrystalline, polycrystalline (or multicrystalline), hybrid and amorphous silicon. All are made from silicon, but differ in the way the silicon is cut and treated.
PV panels will differ in efficiency (how much of the sun's energy is used by the system per unit area) and in price. Although polycrystalline cells can be cheaper, Monocrystalline cells tend to be more effective (13-17% efficiency compared with 11-15% efficiency).
Hybrid cells combine crystalline cells with another cell type, thin film. This makes them even more efficient (17%+), but they cost more. Therefore when comparing quotes, make sure you know what kind of solar PV cells you are being quoted for.
Quite a big roof is needed if you want to generate significant amounts of energy. Also, your roof must be robust enough to take the weight of solar panels, in particular if the panel is to be installed on top of existing tiles. Solar panels are more expensive to buy and install than solar water systems with a high initial outlay typically between 8,000 and 14,000. Solar light hours and climate will affect efficiency.
Only daylight is needed to make energy not sunshine. Your panels can be connected to the national grid and any extra electricity sold back to an electricity company. Your average household electricity bill could be slashed by about 40%. The Feed-in Tariff provides added generous income (unlike solar thermal).
A reputable company will be able to advise you further on which type of solar solution is better for you.
by: brucu5u6ga
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