How Do I Register My Solar Panels with British Gas?
Author: Steve Fairless
Originally Published: 24th February 2024 · Updated: 29th August 2026
To register a solar PV system for British Gas Smart Export Guarantee payments, apply through British Gas's SEG application process and provide the required certification, grid-connection evidence, export-capable smart-meter details and payment information. British Gas's current consumer page says the account setup can take up to four weeks once the application is submitted.
The old idea that you “register solar panels with British Gas” as part of making the PV system legal is misleading. Your installer handles the relevant installation certification and DNO/grid-connection process. British Gas registration is a commercial export-tariff application so the supplier can pay you for eligible metered exports.
If you are planning a new installation through Sustainable Energy Engineering, we make sure the technical handover includes the information you need for an export application rather than leaving you to work out what each certificate means.
Checked against British Gas's live SEG page on 29th August 2026. British Gas states that its export tariffs are variable, so the rates below can change after publication.
British Gas SEG application: what you currently need
- An eligible renewable generator such as solar PV.
- System capacity within the SEG eligibility limit.
- An MCS certificate, Flexi-Orb certificate or other accepted accreditation certificate.
- Proof of grid connection from the DNO, such as the relevant G98/G99 evidence.
- A smart meter that can record export at 30-minute intervals.
- Bank details for payment.
- A property in England, Scotland or Wales for the domestic British Gas SEG route described on its current page.
Step 1: understand what you are applying for
The Smart Export Guarantee is separate from your normal electricity import contract. Your import tariff is what you pay for electricity drawn from the grid. Your export tariff is what you are paid for eligible electricity sent to the grid.
British Gas is listed by Ofgem as a mandatory SEG licensee for the seventh SEG year running from 1 April 2026 to 31 March 2027. You do not have to buy your imported electricity from British Gas to apply for its SEG tariff, but its current page offers better export rates to British Gas electricity customers.
Step 2: gather the paperwork before starting the application
British Gas currently asks for certification and proof of grid connection. In practice, that means you should have the handover documents from your installer available before you start the form.
Document checklist
- MCS certificate, Flexi-Orb certificate or another accreditation certificate accepted by British Gas.
- DNO proof of grid connection under the relevant G98/G99 route.
- System capacity information.
- Smart meter/export details where requested.
- Bank account details for SEG payments.
- Contact and property information matching the application.
If you cannot find the MCS or DNO documents, contact the original installer before assuming they never existed. Missing or mismatched paperwork is one of the easiest ways for an export application to stall.
Step 3: make sure your meter can provide export readings
British Gas says the SEG system must be connected to a smart meter that sends readings every half hour. Its page also explains that an export MPAN is separate from the import MPAN on your normal electricity bill.
If you are joining SEG for the first time, British Gas says it can create and register the export MPAN as part of the process. If you move an existing SEG arrangement to British Gas, the export MPAN can be transferred from the previous provider.
Step 4: apply online
British Gas's current process starts with its online SEG application form. After submission, it emails confirmation and asks for any missing information. The company states that setting up the account can take up to four weeks.
That timescale is a supplier estimate, not a guaranteed completion date. Applications can take longer if documents are incomplete, the meter is not communicating correctly, the export MPAN needs work or the installation details do not match the evidence supplied.
What British Gas is paying as of 29th August 2026
British Gas updated its domestic SEG page on 27th August 2026. The page currently advertises:
| Tariff | Who the current page says it is for | Rate shown on 29 Aug 2026 |
|---|---|---|
| Export Premium | British Gas electricity customers with systems up to 15 kW, subject to terms. | 12p/kWh |
| Export Extra | British Gas electricity customers with systems over 15 kW, subject to terms. | 8p/kWh |
| Export SEG | Non-British-Gas electricity customers, developers and certain other customers described in the current terms. | 3p/kWh |
| Export Voidcare SEG | Qualifying social-landlord VoidCare customers with systems up to 15 kW. | 6p/kWh |
Important: British Gas describes the main tariffs as variable, so these rates can rise or fall. The tariff you actually receive depends on the eligibility terms in force when your application is accepted.
Do not hard-code today's export rate into a 20-year solar forecast
SEG tariffs are commercial products and can change. Use the current rate for a current comparison, but model long-term savings with sensitivity ranges rather than assuming 12p, 8p or any other rate will remain unchanged for decades.
How British Gas says payments work
Its current page states that SEG payments are sent every three months and that payment is made within 28 days of receiving the relevant export meter reading. If the smart meter is communicating normally, readings should usually be obtained automatically; British Gas can request a manual reading if communication is not available.
That is another reason to understand the difference between the inverter app and the export meter. British Gas pays against export data, not the total PV generation figure shown by the inverter.
Can you get British Gas SEG if British Gas is not your electricity supplier?
Yes, according to the current British Gas page. However, non-supply customers are placed on a different export tariff and therefore do not receive the higher customer-only rate shown for Export Premium/Export Extra.
Before switching either import or export supplier, compare the whole arrangement. A higher export rate can be offset by a less attractive import tariff, and vice versa. There is no requirement that the best import and export products come from the same company.
Can you have a battery and still receive British Gas SEG?
British Gas currently says yes: an applicant can receive SEG payments whether the exported electricity comes directly from the renewable generator or from battery storage, subject to the tariff terms and metering arrangements.
A battery can change when you import and export, so the financial result depends on the complete tariff strategy. If you are considering adding storage, our battery storage service can be designed around the PV system and export/import goals together.
What if you already receive Feed-in Tariff payments?
British Gas explains that you cannot receive both FiT export payments and SEG export payments for the same export at the same time. An existing FiT customer may be able to opt out of FiT export and use SEG while retaining FiT generation payments, but the decision should be checked carefully against the legacy contract.
Do not change an older FiT arrangement just because a current headline SEG rate looks attractive. Compare deemed or metered FiT export, SEG, metering and the rules for moving back before making the switch.
Common reasons a British Gas SEG application can be delayed
Paperwork mismatch
The system size, address, installer certificate or DNO evidence does not match the application details.
Metering issue
The meter has not been enrolled for export, half-hourly export data is unavailable or communications are not working.
Missing export MPAN
An export MPAN still needs to be created or transferred before settlement can run correctly.
Changed system capacity
Extra panels, inverter changes or battery/export changes can make the original DNO/application information outdated.
What if you add more panels later?
British Gas's current FAQ says the maximum capacity for most SEG-eligible technologies is 5 MW and advises existing customers to contact it if capacity has been added. Separately, altering the generating equipment can require an updated DNO connection process. Do not assume an old export application automatically covers a materially changed installation.
Should you automatically choose British Gas for export?
No single SEG supplier is automatically best for every household. Ofgem's current supplier list includes multiple mandatory and voluntary SEG licensees. Compare the live export rate, import tariff interaction, term, payment schedule, eligibility, battery treatment and any hardware requirements.
British Gas is a legitimate current option and its application requirements are clearly published, but the right export contract should be chosen from the current market rather than from installer habit.
What we provide after a new installation
A professional home solar PV handover should make the export application easier. We provide the relevant system documentation and explain which figures relate to generation, network connection and metering. We can also explain the difference between the DNO connection process and the later SEG supplier application.
If you are planning a new system and want the paperwork and export route considered from the beginning, request a solar quote. The export tariff itself remains your contract with the chosen supplier, but the installation should leave you with the evidence needed to apply.
