What Is a Solar Export Number and How Do You Get One?

An export number — sometimes called an export MPAN — is a unique reference number issued by the Distribution Network Operator (DNO) when a solar system is approved to export electricity to the grid.

It's separate from the standard import MPAN (the meter reference number already associated with the property). The export number specifically identifies the export connection and is required by energy suppliers to set up export tariff payments.

To register for the Smart Export Guarantee (SEG), energy suppliers require proof that the solar system is legitimately connected to the grid with export approval from the DNO. The export number is that proof.

Without it, your customer cannot register for SEG and won't be paid for the electricity they export. For many homeowners, SEG income is part of the financial case for going solar — so not having the export number ready can cause frustration and complaints after installation.

The DNO issues the export number as part of the grid connection approval process. For G98 notifications, it's typically issued alongside the acceptance confirmation. For G99 applications, it comes with the formal approval letter.

In some cases, there can be a short delay between approval and the export number being issued. We track this and make sure it reaches you as soon as it's available.

If your customer's DNO application was submitted some time ago and you haven't received an export number, the most likely causes are:

• The application hasn't been processed yet — common with backlogs at certain DNOs
• There was an issue with the application that caused a delay
• The export number was issued but not passed on correctly

Chasing the DNO directly can be time-consuming. If you used our service, we handle all follow-up on your behalf and will flag any issues before they become a problem for your customer.