Once your solar PV system is installed, you’ll own the system, meaning you can be in control of your own free source of electricity that is exempt from VAT and price increases (RPI).

An average house with 3 bedrooms can typically use between 4000 kWh, and 6000 kWh (units) a year, or around 12-17 kWh per day. A single person is likely to use around 3000 kWh – 4000kWh of electricity.

A unit or kWh (Kilowatt hour) relates to 1000 watts used in an hour. A mWh, or milliwatt hour is 1 million watts used in an hour. It is how electricity providers measure electricity and is the unit they use on an electricity bill.

You will need a South facing roof for a solar PV system.

As a rough example, a 1kWp system should generate between 800 kWh and 1000 kWh a year. There are however many factors that affect this, including the angle and size of your roof, the direction it faces and if there is any shading.

Yes. There may be times when you will be generating electricity and not using it. This electricity will be exported back to the electricity grid. Your electricity supplier will add a meter to your solar PV system. This will show the number of units that you have exported to the grid. You get paid for any electricity you export back to the grid.

A complete solar PV system will range between £6,000 and £20,000 depending upon the size and type of system that is suitable for your property. We provide a full, no obligations, free assessment of your house in order to determine the exact cost of your solar PV system.

The AC output from the inverter is wired into a spare breaker unit

Your system is attached to the electricity grid and therefore does not have any additional back up devices attached. This means it will shut down when AC current from the distribution board is lost.

Not unless the modules are exposed to a high level of covering, i.e. near to a construction site. The performance of PV modules suffer very little degradation and normally efficiency will drop by no more than one or two percent.

It is a common misconception that solar panels only work in direct sunlight.

Generally you will not require planning permission for a PV system, however

We advise that the system is checked electrically and mechanically