Best Energy Tariffs for Solar Owners UK 2026

The tariff you're on matters as much as the kit you buy. A 800W plug-in solar system on a standard tariff saves you around £168/year. The same system paired with Octopus Agile — used intelligently — can save considerably more, because you're not just generating: you're also buying grid electricity at the right moments.

This guide covers the smart tariffs worth considering for UK solar owners in 2026, what each one offers, and how to get the most from each pairing.

The best tariff for solar owners in 2026 is almost certainly Octopus Agile — if you have a smart meter and can shift some load. The combination of cheap overnight rates (for battery charging or running appliances) and the ability to export generation at variable rates makes it the natural pairing for anyone with a plug-in kit or hybrid system. If you're not on a smart tariff yet, switching is free and the savings are immediate.