Watts Worth It guide

Smart Export Guarantee and UK Export Tariffs

The Smart Export Guarantee requires participating electricity suppliers in Great Britain to offer payment for eligible low-carbon electricity exported to the grid. Rates and conditions are set by suppliers, so compare the whole tariff rather than assuming one universal SEG price.

Illustration showing funding and grants equipment and a UK home

Smart Export Guarantee and UK Export Tariffs

Ofgem administers the SEG framework for Great Britain. It does not cover Northern Ireland, where households should check export arrangements with local suppliers. Eligibility, metering and application evidence must be completed before expecting payments.

When assessing smart export guarantee and uk export tariffs, energy Saving Trust says a typical domestic array is about 4.5 kWp, uses roughly 12 panels, occupies around 20–30 m² and costs about £7,600. Within smart export guarantee and uk export tariffs, it also says east- or west-facing roofs tend to generate 15–20% less than an equivalent south-facing roof. Within smart export guarantee and uk export tariffs, those are national comparison points, not a substitute for a shade survey or an MCS performance estimate for the actual roof.

Energy Saving Trust says households typically receive around 12p for each exported unit, but this is a comparison figure rather than a guaranteed offer. Suppliers can change products, require import supply or set different rates for solar and battery export.

A high export rate can alter battery choices. Storing a unit means giving up its export payment, so compare the avoided import after losses with the export income sacrificed. Some tariffs also restrict simultaneous import charging and export.

What changes the answer

Eligibility

Confirm technology size, MCS evidence or equivalent, commissioning date and supplier requirements before choosing a tariff.

Export meter

Payments depend on measured export. Check smart-meter capability, export MPAN setup and reading frequency.

Rate structure

Compare fixed versus variable rates, contract length, exit terms and whether the supplier must also provide imports.

Battery exports

Ask whether grid-charged electricity may be exported and whether a separate battery rate or control agreement applies.

Payment timing

Review statement frequency, minimum payment thresholds and how missing data is corrected.

Whole-bill effect

A generous export rate may sit beside a less attractive import tariff. Model both sides of the bill.

Illustrative worked example

Illustrative example — a Lincoln home exports 2,200 kWh a year. At Energy Saving Trust’s typical 12p comparison, gross export income is 2,200 × £0.12 = £264. If an alternative offer pays 8p, income is 2,200 × £0.08 = £176. The annual difference is £88. If the higher export product raises import costs by more than £88 for that household, it is not the cheaper whole-bill option. Verify live rates with each supplier.

Rules and responsibilities for this topic

Scheme geography

SEG operates in England, Scotland and Wales. Northern Ireland uses different market arrangements.

Installation evidence

Suppliers normally request certification and commissioning documents; keep these with the DNO acceptance and paid invoice.

Metering

Export must be measured by an appropriate meter. Deemed export is not the normal basis for new SEG payments.

How to make a sound decision

Start the smart export guarantee and uk export tariffs assessment with evidence from the property rather than a national average. Gather smart export guarantee and uk export tariffs evidence from recent bills, interval data where available, photographs, dimensions and details of the existing heating or electrical system. Write down which smart export guarantee and uk export tariffs outcome matters most, such as lower annual cost, reduced emissions, greater comfort or backup capability, because one quotation may not optimise all of them.

Compare at least three smart export guarantee and uk export tariffs proposals on an identical scope. Put the smart export guarantee and uk export tariffs equipment, enabling work, access, electrical changes, controls, commissioning, monitoring, warranties and aftercare into the same table. Where a smart export guarantee and uk export tariffs line is excluded, obtain a price or a clear explanation; a cheaper headline can become the dearer completed project when essential work appears later.

Stress-test the smart export guarantee and uk export tariffs calculation by reducing forecast performance and changing the tariff assumptions. Keep smart export guarantee and uk export tariffs capital cost, finance cost, maintenance, export income and avoided imports as separate lines. Simple payback for smart export guarantee and uk export tariffs is installed cost divided by annual benefit, but it is only a screening tool and cannot guarantee future tariffs, weather, household behaviour or product life.

Before accepting a smart export guarantee and uk export tariffs proposal, check the named installer, product certification, network or planning route, cancellation rights and complaints process. Save the signed smart export guarantee and uk export tariffs design, performance estimate, data sheets, approvals, photographs and commissioning records. Those smart export guarantee and uk export tariffs documents help with warranty claims, future maintenance and a later house sale.

Allow time to read the smart export guarantee and uk export tariffs paperwork away from a sales visit. Check that the final smart export guarantee and uk export tariffs contract agrees with the surveyed design and that every verbal promise appears in writing. Record who will handle permissions, metering, notifications and remedial work for smart export guarantee and uk export tariffs. If the smart export guarantee and uk export tariffs evidence conflicts, pause the order and obtain independent advice instead of guessing which assumption is correct.

Questions to ask the installer

  1. What exact export rate applies today?
  2. Must you supply my imported electricity too?
  3. How is battery export classified and paid?
  4. Who obtains the export MPAN?
  5. How often are readings and payments processed?
  6. Can the rate or eligibility rules change during the term?

Put every smart export guarantee and uk export tariffs answer into the quotation or design pack so the evidence forms part of the comparison and proposed contract.

Frequently asked questions

Is the SEG rate fixed by Ofgem?

No. Ofgem sets and administers the framework, while SEG licensees design their offers. A tariff must pay more than zero at times of export, but suppliers choose rates and conditions. Compare current official supplier terms before applying. Ask for this smart export guarantee and uk export tariffs point to be confirmed in the written design or funding evidence before you commit.

Can I receive SEG without a smart meter?

You need an export-capable meter that records exported electricity, and suppliers commonly use smart meters for this. Ask the chosen licensee whether the existing meter is suitable and who will arrange an export MPAN or meter exchange. Ask for this smart export guarantee and uk export tariffs point to be confirmed in the written design or funding evidence before you commit.

Can a battery earn export payments?

Potentially, subject to the supplier’s tariff and metering rules. Some offers distinguish solar-origin and grid-charged electricity. Confirm permitted charging and export behaviour in writing, because the battery app allowing export does not itself establish tariff eligibility. Ask for this smart export guarantee and uk export tariffs point to be confirmed in the written design or funding evidence before you commit.

Do I have to use my electricity supplier for SEG?

Not always. Some licensees accept export-only customers while others reserve their best rates for import customers. Compare the export rate alongside the import tariff, standing charge and any switching conditions to find the best whole-bill result. Ask for this smart export guarantee and uk export tariffs point to be confirmed in the written design or funding evidence before you commit.

Is SEG available in Northern Ireland?

No, the statutory SEG framework applies in Great Britain. Northern Ireland households should ask their electricity supplier and NIE Networks about current export payment, metering and connection arrangements. Ask for this smart export guarantee and uk export tariffs point to be confirmed in the written design or funding evidence before you commit.

Use the next step

Test the smart export guarantee and uk export tariffs assumptions before requesting or accepting quotations. Model self-use and export and keep the smart export guarantee and uk export tariffs result beside each installer’s written evidence.

Independent sources

  • Energy Saving Trust, Solar panels (accessed 3 October 2026) — consulted for smart export guarantee and uk export tariffs.
  • Ofgem, Smart Export Guarantee (accessed 3 October 2026) — consulted for smart export guarantee and uk export tariffs.
  • Energy Networks Association, Connecting generation (accessed 3 October 2026) — consulted for smart export guarantee and uk export tariffs.
  • MCS, Standards and tools library (accessed 3 October 2026) — consulted for smart export guarantee and uk export tariffs.

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