How to register a plug-in solar kit

Where to register

The route is the UK Plug-in Solar Registration website, myplugin.solar. Its own footer states who runs it:

“This website is operated by Energy Networks Association Limited. We are registered in England and Wales under company number 04832301 and have our registered office at 4 More London Riverside London SE1 2AU.”

That matters. The Energy Networks Association is the body for the companies that run the distribution networks, and the same body that publishes the G98 engineering recommendation and the Type Test Register. You are not registering with a third party or a retailer; you are notifying the networks through their own service, and it sends the notification to your network operator for you.

On whether you have to, the ENA’s answer is one word and then an explanation: “Yes. Registering your plug-in solar device is a legal requirement. Registration also helps your DNO understand where these devices are connected and ensure the local electricity network can safely accommodate them.”

When to do it

The ENA says: “You should submit your registration once you have your plug-in solar device and know the address where it will be installed.”

So you do not have to wait until the kit is up and generating — having it and knowing where it is going is enough. No deadline is stated on the service, and no window of days to register within. If you have already installed a kit and not registered it, the sensible reading is to do it now rather than worry about having been late.

You may have read “28 days” somewhere. Several widely read guides state a deadline that the registration service itself does not. MoneySavingExpert’s plug-in solar guide (updated 23 September 2026) has a step headed “You MUST register your plug-in solar panels within 28 days”, and adds “you’ll need to register them within 28 days of connecting them”; City Plumbing’s guide on notifying your network operator says the same; UKEM’s rules article instead says notification is mandatory “before you connect”. We have gone with what the ENA states on the service you actually use, because it operates it — and it sets no deadline and asks you to register once you have the device and know the address.

Practically, the disagreement does not change what you should do: register as soon as you have the kit. Doing it early satisfies every version of the advice, and there is no benefit in waiting. We will say so differently if the ENA, DESNZ or an engineering recommendation publishes a deadline.

What you need, and the four steps

Less than you might expect. The service lists four steps:

1. Verify your email. “Continue with a one-time code.” So you do need a working email address, even though the confirmation itself is on screen.
2. Confirm your address. “Enter your postcode and select your address.”
3. Select your device. “Choose one of the compliant devices.” You pick from a list rather than typing in a model.
4. Submit. “Review and submit — we’ll send your notification automatically.”

What it does not ask for is worth saying, because other write-ups of this claim otherwise: there is no request for your MPAN, no inverter serial number, no commissioning date and no technology code. Have your device’s make and model to hand and you have everything.

After you submit, “a notification will be sent to your DNO to inform them that the plug-in solar device will be used at the address provided.” On what happens to your details: “Your registration information is shared with the relevant DNO so they can be notified that the device will be used at the registered address. Your information is not shared with other partners or companies.”

If your device is not on the list

You can only register a device the ENA has already assessed: “Only compliant devices that have been tested and approved for domestic use can be registered. When completing your registration, you will only be able to select devices that are available on the approved device list.”

If you cannot find yours, the ENA’s advice is to wait rather than to improvise: “If your device cannot be found by entering the manufacturer, model or device name, it may still be undergoing assessment. Please check the list again after a few days before submitting your registration.”

Treat a missing device as a question about the kit, not about the form. If a model has no entry at all, that is the thing to resolve with the seller before you use it — see kits on the ENA register for what the register currently lists, and the compliance checklist for what to ask.

One device, and replacing it later

The limit is per home, not per person or per socket. The ENA: “No. Each household can have one plug-in solar device with a maximum output of 800W installed at any one time.”

If you change kit, you register the new one: “If you want to replace your registered device, you can register the replacement device through the ‘Register Plug-in Solar Device’ process.” The service does not describe a separate way to remove a registration, so if you take a kit out permanently — or you move house — ask your network operator what it wants. Our G98 guide explains who your operator is and how to find them.

What this registration is not

Two different things both get called “the register”, and conflating them causes real confusion:

• The ENA Type Test Register is about the product. The manufacturer submits a kit; the ENA assesses it; if it is listed as compliant, that model may be used for plug-in connection in Great Britain. You never interact with it. Our dated list of what it holds is in the ENA register guide.
• Registering your device is about your installation. It tells your network operator that a particular compliant model is in use at your address.

You need both to be true: a model that is on the Type Test Register as compliant, and a registration for your address. One does not substitute for the other.

Nor does registration help you earn for exported electricity. We read all six big suppliers’ export pages on 5 October 2026 and none of them accepts a registration confirmation as evidence for a Smart Export Guarantee application — they ask for a certificate issued by an installer. See the Smart Export Guarantee.