Monocrystalline cells tend to be more efficient than polycrystalline cells (13-17%) efficiency compared with 11-15% efficiency) but polycrystalline cells can be cheaper.
Therefore it is important when comparing quotes, make sure you know what type of solar PV cells you are being quoted for.
PV Systems can be used for a building with a roof or wall that faces within 90 degrees of south, as long as no other buildings or large trees overshadow it. Less energy will be generated if the surface is in shadow for parts of the day, but it will generate some electricity.
Only daylight is needed to create energy, as solar panels work from the sun’s irradiance, not just sunshine, so you can enjoy free renewable energy in your home even on a winter’s day.
Efficiency depends on the number of solar light hours and climate.
Each solar PV Panel typically has an area of 1.2 to 1.8 square meters, depending on the manufacturer, and will produce about 180-250 watt. So to produce 1kw of power, you would need 4-5 solar panels.
In addition to all these benefits, you are also playing your part in helping the environment, as solar power is an entirely clean and renewable energy source.
Please call me for a quotation on 01276 683 420
