Smart Export Guarantee Scotland: What It Is and How Much You Can Earn

Every solar PV system in Scotland generates more electricity than the household needs at certain times. On a bright spring afternoon, a typical Aberdeenshire 4kWp system may produce twice the household’s instantaneous demand. That surplus electricity flows out to the local grid. Under the Smart Export Guarantee (SEG), your electricity supplier pays you for that exported electricity. This page explains exactly how the SEG works, what rates are available from Scottish suppliers in 2026, how to apply, and how to maximise the income it generates.

What is the Smart Export Guarantee?

The Smart Export Guarantee is a government mandated scheme that requires licensed electricity suppliers with more than 150,000 domestic customers to offer at least one tariff that pays eligible generators for surplus electricity exported to the grid. It was introduced in January 2020 as the successor to the Feed in Tariff (FIT), which closed to new applicants in March 2019.

The SEG is not a subsidy paid from taxation. It is a market mechanism: suppliers set their own export rates (above zero), and generators choose which supplier to export to. The government sets the obligation but leaves the commercial rate to market competition.

The SEG applies across Great Britain, including Scotland. Scottish homeowners access the same scheme and the same supplier rates as households in England and Wales. There is no Scotland specific SEG variant.

How is the SEG different from the Feed in Tariff?

The Feed in Tariff paid a generation tariff for every unit of electricity generated by the solar system, regardless of whether it was consumed in the home or exported. It also paid an export tariff (or a deemed export payment of 50% of generation for systems without an export meter) for the electricity sent to the grid. FIT rates for solar installations certified before March 2019 were typically 10p to 16p per kWh for the generation tariff and 5p per kWh for the deemed export element.

The SEG pays only for electricity actually exported to the grid. There is no generation tariff. The export payment is typically lower than the old FIT combined rate but is applied to metered export only, which means there is no ambiguity or deemed payment calculation involved.

For homeowners who registered under the FIT before March 2019, those payments continue for the term of the original tariff (typically 20 to 25 years from the installation date). Those homeowners are not on the SEG. For all new installations from January 2020 onward, the SEG is the export payment mechanism.

What are the SEG rates in Scotland in 2026?

SEG rates vary by supplier and by tariff type. The main categories are:

Fixed rate SEG tariffs

Fixed rate tariffs pay a set rate per kWh exported, regardless of when the export occurs. In 2026, fixed rate SEG tariffs from major suppliers ranged from approximately 3p to 15p per kWh. The variation reflects different commercial strategies among suppliers: some treat the SEG as a customer acquisition and retention tool (offering higher rates), while others offer the minimum required by the obligation.

Representative fixed SEG rates from major suppliers available in Scotland in early 2026:

• Octopus Energy (Outgoing Octopus): approximately 15p per kWh for most Aberdeenshire postcodes.
• E.ON Next (Next Export): approximately 5.6p per kWh.
• Scottish Power (Export Plan): approximately 5p per kWh.
• EDF (Solar Export): approximately 7.5p per kWh.
• British Gas (Export): approximately 5.5p per kWh.

Rates change. Always check the current rate with your chosen supplier before applying.

Dynamic rate SEG tariffs

Dynamic tariffs pay rates that vary by time of day in response to wholesale electricity market prices. Octopus Agile is the best known example. Under Agile, the export rate can be very high during periods of peak grid demand (sometimes 40p to 60p per kWh) and low or zero during periods of surplus renewable generation.

For homeowners with a smart battery system, dynamic export tariffs can significantly improve the overall return from the solar and storage system. The battery can be configured to hold exported electricity during low rate periods and release it to the grid during high rate periods, capturing the premium rates rather than exporting at whatever rate happens to apply at the time of surplus generation.

How to apply for SEG payments in Scotland

The process for accessing SEG payments is straightforward once the installation is complete and registered on the MCS database:

1. Receive your MCS certificate: The MCS installation certificate is issued at the end of the installation day and the system is registered on the MCS installation database. You receive a copy of the certificate.
2. Choose a supplier: You do not have to apply to your existing electricity supplier. You can choose any SEG supplier offering a competitive rate, regardless of who supplies your imported electricity. Some homeowners export to a different supplier than the one they import from.
3. Submit your application: Each supplier has an online application form. You will need your MCS certificate number, the installation address, the system capacity in kWp, and details of your export meter (if you have a smart meter, SMETS2 meters can measure export directly; older meters may require a generation meter reading approach).
4. Smart meter requirement: SEG payments require a smart meter capable of measuring export. Most Aberdeenshire homes have had SMETS2 smart meters fitted by 2026. If yours has not yet been upgraded, the supplier arranges this as part of the SEG application at no additional cost.
5. Receive payments: Once registered, export payments are made quarterly or monthly depending on the supplier. The amount varies with the volume of surplus electricity exported.

How much can a Scottish homeowner expect to earn from the SEG?

The SEG income depends on four things: how much the system generates, what proportion of generation is exported (rather than self consumed), what rate the supplier pays, and whether a battery system reduces or increases export at strategic times.

For a typical Aberdeenshire household with a 4kWp solar system generating 2,600 kWh per year:

Without battery storage:
Self consumed directly: approximately 900 kWh. Exported to grid: approximately 1,700 kWh.
At 7p SEG rate: £119 + VAT per year. At 15p SEG rate: £255 + VAT per year.

With 10kWh battery storage:
Self consumed (direct and via battery): approximately 1,850 kWh. Exported to grid: approximately 750 kWh.
At 7p SEG rate: £53 + VAT per year. At 15p SEG rate: £113 per year.

Adding battery storage reduces SEG income because more of the generation is consumed within the home rather than exported. However, the electricity consumed via the battery saves 24p per kWh in avoided imports, which is considerably more valuable than the 7p to 15p SEG rate. The battery investment improves the overall financial return even though it reduces the SEG payment. For a detailed worked example, see our guide on solar battery storage in Scotland.

Maximising your SEG income

Several strategies improve the income from the Smart Export Guarantee:

Choose the highest rate supplier

The difference between a 5p and a 15p SEG tariff is 10p per kWh. On 1,700 kWh exported per year, this is £170 + VAT per year. Over 20 years, it is £3,400 + VAT. Choosing the right supplier at the outset is one of the highest value decisions in the SEG process. Check the current rates on the Ofgem SEG register before applying.

Consider Octopus Agile if you have a smart battery

Octopus Agile offers some of the highest export rates available in the UK market, particularly during demand peaks. A smart battery system programmed to export during peak rate periods (typically 4pm to 7pm on winter weekdays) can significantly outperform a fixed rate SEG when combined with the right tariff.

Review your tariff annually

SEG rates change as suppliers adjust their commercial offers. The rate you were offered at application may no longer be the best available 12 months later. You can switch SEG suppliers at any time without affecting the solar installation or the MCS registration. Set a reminder to compare rates once a year.

Keep your MCS certificate safe

The MCS certificate is required for any SEG application, for any property sale where you wish to disclose the installation to a buyer, and for any warranty claim on the panels or inverter. Keep a digital copy as well as the original document.

SEG and the existing Feed in Tariff: what if I already have FIT payments?

If your solar installation was registered under the Feed in Tariff before March 2019, you continue to receive FIT payments for the full term of your tariff (typically 20 years from the registration date). You are not on the SEG and do not need to apply. Your FIT generation and export payments continue regardless of changes to the SEG.

When your FIT tariff expires, you will no longer receive generation or export payments automatically. At that point, you will need to apply to a supplier under the SEG to continue receiving export payments. The transition from FIT to SEG at the end of the FIT term is a step many homeowners are approaching for the first time in 2026 as installations from 2005 to 2006 reach their 20 year term.

Frequently asked questions

Do I have to export to the same supplier I import from?

No. You can import from one supplier and export to a different supplier offering a higher SEG rate. Managing two accounts is straightforward and the financial benefit of a better export rate typically outweighs the minor additional administration.

What if I do not have a smart meter?

A smart meter capable of measuring export is required for most SEG tariffs. If you do not have one, the SEG supplier will arrange a smart meter installation as part of the application process. This is provided free of charge. The smart meter rollout for Aberdeenshire is administered by SSEN on behalf of the meter operator.

Can I receive SEG payments for a battery that charges from the grid overnight?

SEG tariffs are designed to pay for solar generated electricity exported to the grid, not for grid charged electricity re-exported. Most SEG tariff terms prohibit exporting grid charged electricity as solar export. In practice, smart battery systems can be configured to avoid this by ensuring only solar charged electricity is eligible for export payments. Faithful Spark configures all batteries correctly at commissioning to comply with SEG requirements.

Does MCS certification expire?

No. The MCS installation certificate is a one time document issued at installation. It does not expire and does not need to be renewed. It remains valid for the life of the installation as evidence that the system was installed to the required standard at the time.

Is the SEG affected by the size of my solar system?

Systems up to 5MW are eligible for the SEG. All domestic residential solar PV systems fall comfortably within this limit. There is no minimum size. A 1kWp or a 6kWp system is equally eligible for SEG payments provided the installation is MCS certified.

Book a free solar survey in Aberdeen

Faithful Spark carries out free solar surveys for Aberdeen and Aberdeenshire homeowners. A professionally installed system is registered on the MCS database at completion so you can apply for SEG payments. We provide a written return calculation as part of every quote that includes a realistic estimate of annual SEG income at current supplier rates. See our guide to solar panel installation in Aberdeen for more on the full process.

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Faithful Spark Electricians. NICEIC approved. Local Aberdeen team. Serving Aberdeen, Peterhead, Ellon, Fraserburgh and across Aberdeenshire.