Smart Export Guarantee Rates 2026: Best SEG Tariffs Compared

If your solar panels generate more electricity than you are using, that surplus does not go to waste. It is exported to the grid, and under the Smart Export Guarantee (SEG) you get paid for it. For South Coast solar owners, choosing the right SEG tariff is a genuine, if secondary, part of the return. This guide explains how the scheme works in 2026 and how to think about comparing rates without overcomplicating it.

First, the basics. The SEG is a UK government-backed obligation requiring larger licensed electricity suppliers to offer a payment for every unit (kWh) you export to the grid. It replaced the old Feed-in Tariff for new installs. To claim it you need an MCS certificate for your system, which we provide on every install, and a smart meter capable of recording your half-hourly export. Without those two things, you cannot be paid, so they are non-negotiable starting points.

Rates vary quite a bit between suppliers, which is the whole reason comparing them is worthwhile. Some offer a flat rate per kWh exported at all times, which is simple and predictable. Others offer variable or agile rates that move with wholesale prices, occasionally paying more at peak demand times. As a broad guide in 2026, flat SEG rates commonly sit somewhere in the low-to-mid teens of pence per kWh, while the best variable tariffs can spike higher at certain times, though they also dip at others.

Octopus tariffs are consistently popular with solar and battery owners on the South Coast, and for good reason. Their export offerings tend to be competitive, and they pair neatly with smart-charging an EV or storing cheap overnight power in a battery to export or self-use strategically. The flexibility suits anyone willing to shift usage around to maximise value. That said, the best tariff for you depends on your own generation and export pattern, not just the headline rate.

Here is the part installers do not always emphasise: SEG income is usually the smaller half of your return. Every unit you use yourself is worth the full import price you avoid, often 25p or more, whereas every unit you export earns the SEG rate, typically lower. So the priority order is clear: self-consume as much as you can first, then optimise your export rate for the surplus. Chasing the highest SEG rate while exporting most of your generation is the wrong way round.

This is exactly where a battery shifts the maths. By storing midday surplus, you can use it during the expensive evening peak instead of exporting it cheaply and re-importing it later at a higher price. With the right tariff and a smart setup, some owners even charge from cheap overnight rates and export selectively. Whether that complexity is worth it depends on how hands-on you want to be, and we are happy to talk through realistic options for your home.

A few practical pointers when comparing SEG tariffs in 2026. You do not have to take your export tariff from the same supplier you buy your import electricity from, though bundling sometimes unlocks a better combined deal. Check whether a tariff requires a particular meter type or a specific battery or EV setup. And weigh predictability against potential upside: a flat rate is easy to plan around, while a variable rate rewards engagement but needs more attention.

On the South Coast, your network operator is SSEN for Hampshire, the Isle of Wight and Dorset, or UKPN for Sussex and most of Surrey, and the grid-connection paperwork is handled as part of a proper install. If you would like help choosing a system and tariff combination that maximises both self-consumption and export income, get a free quote and we will model it honestly for your roof and usage. As ever, no pushy sales, just the numbers that apply to you.