G98 form for plug-in solar: which one, and what goes in it
The G98 paperwork has four forms and a plug-in kit needs one of them. Here is which, what it asks for, where each network operator publishes it, and the newer online registration route some sites now describe.
Rules and product details last checked on .
Key takeaways
- G98 has four forms, and a domestic plug-in kit normally needs Form B. Form A is an application, Form C verifies type testing, Form D is for decommissioning.
- Form B is a notification, not a request. It tells your network operator the equipment exists. The legal duty behind it is regulation 22, not the form itself.
- Every operator publishes its own version, so the right download depends on who runs your local network, which your MPAN identifies.
- A newer online route is being reported and we could not confirm it. Several sites say a registration portal at myplugin.solar now replaces the form for compliant kits. We could not verify that against the Energy Networks Association or GOV.UK. Read the section below before relying on either route.
- Whichever route you use, keep the confirmation. It is your evidence that you notified before or at commissioning.
“G98 form” is really three questions: which form, what it asks, and where to get your operator’s copy. This page answers each, and is honest about the one thing that may have changed.
Which form you need
G98 is the industry engineering recommendation for connecting small generators that run in parallel with the network, up to 16 A per phase. Its paperwork comes as four documents, as set out in the Energy Networks Association’s connection guides:
| Form | What it is | Plug-in kit? |
|---|---|---|
| A | Application to connect | Not normally |
| B | Installation document, the notification | Yes, the one you want |
| C | Type test verification | Completed by the manufacturer |
| D | Decommissioning | Only when you remove it |
An 800 W kit draws about 3.5 A, a fifth of the 16 A ceiling, which is why the simple notify route applies. We work the arithmetic through in our G98 guide.
What Form B asks for
The exact layout differs by operator, so treat this as the typical shape, not a template. Expect to provide:
- Your supply details, chiefly the MPAN printed on your electricity bill.
- Your name and address, and the installation address if different.
- The equipment, meaning the make and model of the inverter, and its type test reference where one exists.
- The rating, which is the AC output of the inverter, not the panel wattage.
- The commissioning date, the day it goes into service.
The type test reference is the awkward line. As we found in our kit survey, most sellers do not publish one, so ask the seller before you buy, not after.
Where to get your operator’s copy
Your network operator is set by where you live, not by your energy supplier. The first two digits of your MPAN identify it, and our G98 guide has the lookup table and a link to each operator’s page. Several operators block automated link checking, so if a link has moved, search their own site for “G98 Form B”.
The newer route: myplugin.solar
Since 27 August, a number of sites describe an online service at myplugin.solar as the new way to notify your operator for a compliant plug-in kit. They say it takes a couple of minutes, asks for your name, postcode and the make and model of the device, routes the notice to the right operator automatically, and emails a reference number. Some call it an official Energy Networks Association service and say it replaces the form for plug-in kits, leaving G98 for larger or hard-wired installs.
Here is what we could and could not check, on 30 September 2026:
- The domain exists. It answers, behind bot protection.
- We could not read it, and the Energy Networks Association and GOV.UK pages we tried would not load for us either, so we have no primary source saying it is official, mandatory, or that it replaces Form B.
- The sites reporting it are commercial. Some of them have been wrong elsewhere, including on a claim about the Renters’ Rights Act that we checked and found untrue.
What we would do. Open the portal yourself. If it accepts your kit and gives you a reference, that is a notification and it is quick. If it does not recognise your kit, or you cannot confirm it is the operator-recognised route, send Form B to your operator as well. The two are not mutually exclusive, and the legal test is unchanged: the operator must be advised before, or at the time of, commissioning.
What we have verified, and what we have not
Verified against primary sources. The regulation 22 duty and its timing, the 16 A threshold, the four G98 forms and their roles, all from the sources quoted in our G98 guide, checked on 11 August 2026.
Not verified. That myplugin.solar is an official service, that registration through it is mandatory, that it replaces Form B, or from what date. Also not verified: the exact fields on any operator’s current form.
Our editorial policy explains how we handle claims we cannot check.
If you have used the myplugin.solar portal, tell us what it asked for and whether it named the Energy Networks Association, and we will update this page with the date.