Browse the table to see all available SEG tariffs sorted by export rate. Use the filters to narrow down by tariff type (fixed, variable, or agile), minimum rate, or whether you need to be an existing customer. Click on column headers to sort differently. The earnings calculator helps you estimate annual income based on your expected export and chosen rate.
Fixed rate SEG tariffs pay the same amount per kWh regardless of when you export. This makes earnings predictable and easy to calculate. The rate is typically guaranteed for 12 months. Currently, the best fixed rates are around 12-15p/kWh. Best for: most households who want certainty and don’t have battery storage to time exports.
Variable SEG tariffs can change their rate at any time, usually tracking wholesale electricity prices. When wholesale prices are high, you earn more; when they’re low, you earn less. Best for: those comfortable with uncertainty who want to benefit from market peaks.
Agile export tariffs pay different rates throughout the day, changing every 30 minutes based on wholesale prices. During peak demand (4-7pm), rates can spike to 20-30p/kWh. Rates can also be very low or negative during surplus periods. Best for: battery owners who can time exports to high-rate periods.
Switching SEG provider is straightforward and you don’t need to change your electricity supplier:
You need an MCS-certified installation and a smart meter that records exports.
Have your MCS certificate, meter details (MPAN), and proof of ownership ready.
Contact your chosen supplier via their website. Most have online sign-up.
The switch typically takes 2-4 weeks. You’ll be notified when the new rate starts.
Unless you have battery storage and time to manage agile tariffs, a top fixed rate (12-15p) is usually best for most households.
Batteries let you store excess solar and export during peak rate periods on agile tariffs, potentially doubling your earnings.
SEG rates change frequently. Set a calendar reminder to check this comparator annually and switch if better rates become available.
Some suppliers offer better export rates if you’re also an import customer. Calculate total value, not just export rate.
No. You can have different suppliers for your electricity import and your smart export guarantee export payments. This means you can shop around for the best of both — a cheap import tariff and a high export rate.
Unlike the old Feed-in Tariff, SEG suppliers can set whatever rate they like. Suppliers offering higher rates often see it as customer acquisition or genuinely value renewable energy more highly.
A typical 4kWp system might export 1,500-2,500 kWh per year. At 15p/kWh, that’s £225-375 per year. Use the calculator above to estimate your specific situation.
Yes, if your system was installed by an MCS-certified installer and you have (or can get) a smart meter. Systems on the old Feed-in Tariff can also sign up for SEG once their FIT contract ends.
Octopus Flux offers premium export rates during peak hours (16-19:00) of around 20-25p/kWh for battery owners. For those who can consistently export during peak times, it can significantly outperform fixed SEG rates.
The SEG comparator helps you find the best export rate for your solar electricity. With rates varying from under 5p to over 15p per kWh, choosing the right tariff can make a significant difference to your annual income. For most households, a high fixed rate offers the best combination of value and certainty. If you have battery storage, consider agile tariffs that reward peak-time exports. Remember to review your SEG provider annually — rates change, and switching is free and easy.