Export earnings calculator

Export is the smaller half of solar’s value, and the half most people can still change.

Everything you use as it is generated avoids buying a unit at around 26p. Everything else is sold, at a rate that depends entirely on which tariff you are on — and those range from a few pence to well over ten.

Put your system in below. The calculator works out your surplus, then prices it across every open untied tariff we track, so you can see what switching would actually be worth.

Why this calculator ranks tariffs rather than picking one

The rate you can get is the one lever left after installation. The panels are on the roof, the orientation is fixed, and your daily routine is what it is — but the tariff is a form.

That is why the table shows every open untied tariff rather than an average. On a typical domestic surplus the difference between the top of that table and the middle of it is worth more per year than most efficiency measures.

What we could not establish

Whether you are eligible for the tariff at the top. Suppliers set their own conditions, including metering requirements and sometimes a requirement to take your import supply from them — which is why we exclude tied tariffs here.

Whether a rate will still be offered when you apply. Our table records when each rate was last verified, and a monitor tells us when the published landscape moves, but rates change between checks.

Half-hourly and agile export values. Some tariffs pay a varying rate tied to wholesale prices. A single pence-per-unit figure cannot represent those properly, and we would rather flag that than model it badly.

This is information, not advice

We do not sell tariffs, take commission, or run a switching service. The table is what the rates are; the choice is yours.