Solar Electricity (PV)

Costs: £4,500-£5,500 I Annual Savings: £560 I Payback: 10 years I Profit: £5000

You can generate cheap, green electricity from sunlight, even here in Britain.

Solar electricity systems capture the sun's energy using photovoltaic (PV) cells. The cells convert sunlight into electricity, and this electricity can power your lighting and appliances. You can receive payments for the electricity you generate, as well as for exporting any electricity you don’t use to the grid.

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The basics

The cells used in solar panels are now so efficient that they will work well anywhere in Britain particularly if you have a southerly orientated roof. A typical home PV system can produce around 50% of the electricity used in an average household per year (Department of Energy and Climate Change), saving around £140 on your electricity bills.

In 2010, the government introduced the Feed-in-Tariff scheme to encourage uptake of solar panels. Under this scheme, your energy supplier pays you for any energy that you generate using your solar panels, as well as any excess that you export to the grid. The average installation can make around £420 a year in FITs at current tariff rates. You can alternatively get the installation paid for using a loan from the Green Deal finance scheme.

Fitting panels is not a complex process, and you can get them fitted with very little disruption. You do need to ensure that you get a qualified installer to qualify for the FITs.

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FAQs

How much does a Solar PV system cost?
Installed prices (including VAT) for a typical domestic system are around £3,000 - £5000. Prices vary in this range depending on which output size you buy - 2-3kW systems will be at the low end of the range and 4kW systems will be at the higher end, but will generate more electricity and therefore, Feed-In Tariff payments.
Do I need planning permission to install a solar PV system?
You won't need planning permission for solar PV panels unless they exceed a certain height or the property is listed or in a conservation area, though rules vary depending on which part of the U.K. you live in. Take a look at our Planning Permission page for further information on your region's regulations.
What is a kWh?
A kWh is a was to measure electricity, particularly electricity that is generated by your renewable energy system. A kWh or 'kilo watt hour' is often referred to as a unit of electricity that is shown on your electricity bill. If an electrical product has a rating of 1 kW it means that it will consume 1 kWh every hour that it is on.
What is the difference between monocrystalline and polycrystalline PV panels?
Firstly, they look different - polycrystalline wafer has a dark blue colour, whereas monocrystalline wafer is black. Monocrystalline panels tend to be slightly more expensive and efficient than polycrystalline panels,
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