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Energy tools and calculators

Solar energy calculator

Use the solar energy calculator for an idea as to the benefits you may see from installing a solar photovoltaic (PV) system.

This tool gives estimates based on information you provide, and a number of assumptions to indicate potential benefits. This is to help you decide whether a PV system is for you.

Use of the tool and its outputs is not a guarantee that you will see the exact same fuel bill savings from the installation of your planned system.

This tool estimates potential payments from the Smart Export Guarantee, which was introduced on 1 January 2020 and requires energy suppliers to pay customers for the electricity they export to the grid. There are a range of tariffs available for this and in some cases participation requires metering. Deals may also be time limited or have other conditions which you should consider carefully in order to make the best choice for you.

The Solar Energy UK website lists current deals available.

Find out which benefits you could see from installing a solar PV system

Use the calculator

Last updated: 20 May 2022