How often do I need to submit export meter readings for SEG?

What governs the detail is the meter, not the calendar. Installations eligible for the Feed-in Tariff are also eligible for the SEG provided they are fitted with an export or smart meter capable of taking measurements at half-hourly intervals¹. A smart meter sends readings to the supplier on a half-hourly, daily or, in some cases, monthly basis depending on preferences and supplier arrangements, so for many homes the "submission" is automatic and the household's job is only to check the figures⁴.

Where a manual reading is needed, submission routes are set by the supplier. Independent guidance lists website, mobile app, phone, online chat, email and text as the channels generally available, and notes that EDF asks customers to sign in to an online account while Octopus offers a monthly reminder link, app scanning and email⁴. The interval that matters for accuracy is shorter than six months: independent guidance recommends a reading at least once a month, ideally on the same day each month⁴.

How often export meter readings must be submitted

The six month figure that circulates comes from payment practice rather than a stated submission rule. Under the domestic renewable scheme rules, if a reading is missed it is submitted three months later and payment for the previous six months is made in one payment³. That produces a twice yearly rhythm in the payment record even where the underlying obligation is different.

The supplier-side floor is annual. Licence condition SLC 21B.4 requires suppliers to take all reasonable steps to take a meter reading at least once a year, and that requirement is retained under the proposed implementation⁶. Independent guidance puts it the same way, saying most suppliers will require at least one meter reading per year⁴. All licensed electricity suppliers are also required to participate in declaring their SEG status on an annual basis, which is a reporting duty on the supplier rather than on the household⁷.

For accuracy, the recommended interval is much shorter. Independent guidance advises submitting a meter reading at least once a month and ideally on the same day of the month⁴. Consumer guidance on import meters takes the same line, recommending readings every month or every three months as a minimum⁸. Citizens Advice states plainly that it is important to send monthly meter readings⁹.

The FIT scheme, which many export households came from, sets its own verification rhythm: FIT licensees are required to verify generation and export meter readings at least once every two years¹⁰. That is a verification duty, not a household submission duty, and it sits alongside the quarterly reading deadlines that apply to certain accredited installations¹².

Why payments stop if readings are not submitted

Export payments depend on a measured figure. The scheme rules require the licensee to calculate the payment using actual export meter readings, so where no reading exists there is nothing compliant to pay against². Where a reading is missed and then submitted three months later, the previous six months are paid in one payment, so the money is deferred rather than lost³.

The harder failure is a meter that stops working. Ofgem guidance notes that a smart meter may stop recording the energy used, or may no longer send readings to the supplier¹⁴. Where a meter fault interrupts the record, FIT payments stop from the date of the last accurate meter reading¹⁵. Failure to keep meters in good working order, or to notify within 28 days, is treated as non-compliance under the scheme rules, which could lead to suspension, loss of payments or revocation of accreditation³.

There is also a boundary between schemes. Generators cannot receive SEG payments as well as FIT payments for exported electricity¹⁶. Where a smart meter is fitted, deemed export payments stop and the household instead receives export payments for the amount of electricity recorded by the meter exported to the grid¹⁷. SEG payments may be received where FIT export payments are received for a different installation, as long as the installations are completely separate with distinct import and export meters and different import and export MPANs¹⁸.

How to submit readings, and where to find the export figure

Submission is supplier-led. Independent guidance lists website, mobile app, phone, online chat, email and text as the channels generally available, and records that EDF asks customers to sign in to their online account while Octopus provides a monthly reminder without account log-in, an app that scans the meter with a phone camera, and email⁴. SEG applications themselves are made online, using the supplier's form with smart meter data and an MCS certificate¹⁹.

Finding the export figure depends on the meter. On an import/export meter with a blue button, pressing the button repeatedly until the display shows a small 5 followed by five numbers gives the export reading²⁰. More generally, an export meter is always located at the point where the installation connects into the distribution or transmission network and must measure export separately from any other energy source unless pro-rating is available²².

Where a submission fails, the supplier holding the export contract is the first point of contact, since the route is theirs. For network matters, SSEN publishes ge@ssen.co.uk for its meter board replacement service²³. Ofgem's load control consumer protection guidance lists sses.licensing@ofgem.gov.uk for that specific subject²⁴. If a supplier goes out of business, official guidance is to take a meter reading as soon as possible and keep a record of it to make sure the billing is correct under the new supplier²⁵.

Half-hourly export data and what the meter records

The scheme's metering requirement is a capability test. Installations eligible for the FIT are also eligible for the SEG provided they are fitted with an export or smart meter capable of taking measurements at half-hourly intervals¹. The export meter must be capable of taking measurements at half-hourly intervals in relation to the exported electricity volumes for which payment is sought². Parliament's briefing states that generators must have a smart meter to monitor exports²⁶.

What a smart meter actually does with that capability varies. Half hourly meter readings mean the meter sends a reading to the supplier every 30 minutes²⁷. In practice a smart meter sends readings directly to the supplier on a half-hourly, daily or, in some cases, monthly basis²⁸. The half-hourly recording of energy use enables the supplier to charge different rates for use at different times of the day or week, which is why the same data underpins both export payment and time-of-use import pricing²⁹.

For a household, the significance is that export income is measured rather than assumed. Independent guidance describes the arrangement as being paid for the exact amount of unused electricity exported back to the grid, as recorded by the smart export meter³¹. That is a stronger position than a deemed or estimated figure, and it is also the reason a meter fault has an immediate financial effect rather than a delayed one. The trade-off is dependence: the reading, the payment calculation and the statement all sit with the supplier and its systems, and the household's independence extends only as far as the meter and the contract.

What happens if a reading deadline is missed

Deadlines in this area fall into two families. The first is the scheme reporting deadline: SEG licensees are required to submit data to Ofgem by 30 June after the end of the relevant SEG year³². That is a supplier obligation and does not affect an individual household's payment directly, but it is the reason suppliers chase readings before their own reporting date.

The second family is the reading deadline itself. For certain accredited installations, quarterly generation meter readings must be submitted to the FIT licensee within 28 calendar days from the end of the relevant quarterly period¹². Where a reading is missed under the domestic renewable scheme rules, it is submitted three months later and payment for the previous six months is made in one payment³. Where no readings are submitted at all, the supplier estimates consumption, which independent guidance warns could lead to being charged more than necessary⁴.

Connection deadlines are a separate matter and carry a harder consequence. Where connection works are not completed by the longstop milestone date, the export capacity can be retracted³³. That applies to the connection agreement rather than to a reading, but it is the point at which a missed date removes the ability to export at all.

For a household, the practical position is that export income is reliable only while the meter records and the readings arrive. The scheme pays on measured export, the supplier sets the submission route, and the interval that protects accuracy is monthly rather than six monthly. The dependence that remains is on the meter, the supplier's systems and the contract term, none of which the household controls. Households weighing the wider picture can compare arrangements on the Smart Export Guarantee page, check what each supplier pays on SEG export rates, and read the application and payment process in full under applying for an export tariff.