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Solar panels on a house roof

Cost savings

Around 3,800 kWh a year from a 4kWp system.

A 4kWp system can generate around 3,800 kilowatt hours of electricity a year, roughly equivalent to a typical household's electricity needs, and save nearly two tonnes of carbon dioxide every year.

England and Wales

Benefit per year, 4kWp system.

Feed-in Tariff era benefit per year for a 4kWp system
RegisteredSystem sizeBenefit per yearCO₂ per year
Up until 31 March 20144kWp£7851.8 tonnes
On and from 1 April 20144kWp£7701.8 tonnes

These figures are based on a 4kWp solar PV system eligible for the Feed-in Tariff scheme at a generation tariff of 13.52p/kWh, paying for both the electricity generated and used and what was exported to the grid. They are historic figures for systems registered in 2014. For an estimate based on your own property today, ask us for a free quote.

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