Do I need to notify my electricity network before registering for the SEG?

Yes. G98 notification is a legal requirement for plug-in solar installations. SEG suppliers may ask for your network acknowledgement reference during the application. Generate your G98 form first.

Can I register for the SEG if I installed the kit myself?

Yes, but you may not have an MCS certificate. Some suppliers accept alternative evidence for small installations. Contact your chosen supplier to confirm what they require before applying.

How long does SEG registration take?

From application to tariff activation typically takes 2–6 weeks. If you need a smart meter installed, this adds time depending on installation availability in your area.

Do I need to switch my electricity supplier to get a SEG tariff?

Not necessarily. All licensed suppliers must offer at least one SEG tariff open to any generator. However, higher advertised rates are often reserved for existing import customers or specific hardware.

Is the SEG payment taxable?

SEG payments for domestic installations are generally not taxable as they are considered a reduction in household energy costs. If you operate a business or rent out the property, different rules may apply — consult a tax adviser.

How to Register for the SEG — Step by Step

Five steps from G98 notification to export payments. Plug-in solar becomes legal from 27 August 2026, and the order matters.

Notify your electricity network with a G98 form

Before SEG registration, tell your Distribution Network Operator you've installed a plug-in solar kit. This is required under ENA Engineering Recommendation G98 within 28 days of installation.

•Use our free G98 form generator to create the notification PDF.
•It covers your installation: location, capacity, inverter details, install date.
•Send the prepared PDF by the checked email or portal route for your confirmed network operator.

Tip: Generate your G98 form at pluginsolarform.co.uk/g98 — about 5 minutes.

Get an MCS certificate (or equivalent)

Most SEG suppliers want an MCS certificate as proof your installation meets UK standards. Your installer normally provides this.

•If you installed the kit yourself, you probably don't have one.
•Some suppliers accept alternative evidence for sub-800 VA installations — ask first.
•An MCS-certified installer will register your installation and issue the certificate.

Choose a SEG supplier and tariff

Compare SEG tariffs. The highest rates are usually for existing customers, so check whether you need to switch your import supplier too.

•See all tariffs on our supplier comparison page.
•Customer-only tariffs may offer higher rates — check the supplier page.
•Don't want to switch? Look for tariffs marked open to non-customers.

Tip: Switching import supplier only makes sense if the total package saves you money.

Get a smart meter installed

The SEG needs an export-capable smart meter that can send half-hourly readings. A SMETS2 meter is usually the cleanest route, but some suppliers can use compatible SMETS1 meters.

•The meter needs an export register and half-hourly readings.
•If you already have a smart meter, confirm it can send export readings before you apply.
•Installation takes 1–2 hours, booked at a time that suits you.

Apply and wait for activation

Once you have your G98 notification, MCS certificate (or equivalent), and smart meter, apply through your supplier's website or by phone. Activation typically takes 2–6 weeks.

•You'll need: address, installation details, MCS certificate number, G98 or network reference.
•Most application forms take 10–15 minutes.
•Some suppliers require you to switch import supply first.
•Payments come monthly or quarterly as bill credit or bank payment.

Tip: Have your G98 form and MCS details ready before starting.

Registration checklist

G98 network notification submitted (use our G98 form generator)
MCS certificate or equivalent evidence
Chosen a SEG supplier and tariff (comparison)
Smart meter installed or booked
Installation details ready: inverter make/model, capacity, date
Bank or energy account details for SEG payments

Generate your G98 form Compare SEG suppliers