How much money does a solar panel produce?

Solar PV is a very predictable form of energy. The government sets the expected amount for sunlight for installations based on the orientation, tilt and level of shading allowing us to estimate pretty accurately what you are likely to earn each year.

Below are examples of three different types of installations which show the generation figures and expected annual return based on the current Feed-in Tariff.

Pitched roof

This is a typical installation

Number of panels 16	x	Capacity of panels 245 Wp	=	Size of installation 3.92 kWp
Annual AC output: 3365 kWh per year Note: this is based on the Government's SAP calculations and takes into account orientation, tilt and shading.
Feed-in Tariff income 43p per kWh – tariff £1447		Export Income 3p per kWh – export £50		Electricity bill savings 13p per kWh - savings £219
Total return each year £1716		Return on investment 12.5%

Flat roof

Installing solar panels on a flat roof requires planning permission. The panels have to be mounted on an ‘A’ frame so that they get the maximum efficiency from the system.

Number of panels 16	x	Capacity of panels 245 Wp	=	Size of installation 3.92 kWp
Annual AC output: 3014 kWh per year Note: this is based on the Government's SAP calculations and takes into account orientation, tilt and shading.
Feed-in Tariff income 43p per kWh – tariff £1296		Export Income 3p per kWh – export £45		Electricity bill savings 13p per kWh - savings £196
Total return each year £1537		Return on investment 11.2%

Bespoke project

Individual projects like this are part of the service we offer. The system might take a little longer to design but that is because we are keen to ensure we select the right frames and fittings for your installation.

Number of panels 54	x	Capacity of panels 185 Wp	=	Size of installation 9.99 kWp
Annual AC output: 8575 kWh per year Note: this is based on the Government's SAP calculations and takes into account orientation, tilt and shading.
Feed-in Tariff income 36.1p per kWh – tariff £3096		Export Income 3p per kWh – export £129		Electricity bill savings 13p per kWh - savings £557
Total return each year £3782		Return on investment 11.3%