Best Smart Export Guarantee Rates in May 2026
The leading SEG tariffs available to UK solar households in May 2026 — and why the highest headline rate is rarely the best deal.
The headline rates as of May 2026
| Supplier | Tariff | Export rate | Conditions |
|---|---|---|---|
| Octopus Energy | Outgoing Lite | 4.1p/kWh | Open to any supplier customer |
| Octopus Energy | Outgoing Fixed | 15.0p/kWh | Must take Octopus import tariff |
| E.ON Next | Next Export Exclusive | 16.5p/kWh | Must take E.ON Next Drive import tariff |
| Good Energy | Solar Savings Exclusive | 10.0p/kWh | Must take Solar Savings import tariff |
| EDF Energy | Export | 5.6p/kWh | Open to any supplier customer |
| British Gas | Export & Earn Flex | 6.4p/kWh | Must take BG variable import tariff |
Why the highest headline rate is often not the best deal
The highest SEG export rates are exclusive tariffs that lock you into a specific import contract. The trade-off rarely favours the consumer. The E.ON Next Drive import tariff has a much higher unit rate than the standard SVT, so unless you have an EV that does most of its charging overnight on the cheap window, the higher export rate is offset by the higher import rate on everything else.
For a typical UK household generating around 3,800 kWh/year and exporting around 60% of it, the difference between Octopus Outgoing Fixed (15p × 2,280 kWh = £342) and E.ON Next Export (16.5p × 2,280 kWh = £376) is £34/year. Easily wiped out by a higher import unit rate on the rest of your usage.
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