A guide to plug-in solar panels

You may have seen a lot of talk about plug-in solar panels recently. They’ve been available in other parts of Europe for years, but a change in the rules means they can now be bought and used in the UK too.

As they are much smaller and simpler than traditional solar panel systems, you can put them on a balcony, garden wall, shed roof or another suitable outdoor space, then connect them to a standard socket.

They may be cheaper than traditional solar panels, but they also produce much less electricity, so it’s worth understanding how they work and what you’re getting for your money before buying one.

What are plug-in solar panels?

Plug-in solar panels, sometimes called balcony solar or plug-and-play solar, are small solar systems designed to generate electricity for use in your home.

The panels generate electricity from sunlight and a small inverter converts it into electricity that can be used by your household appliances. Instead of being connected to your home’s electrical system by an installer, the system plugs into a straight into a standard socket.

Under the new UK rules, plug-in solar systems can feed up to 800 watts of power into a home. The Government estimates this could provide up to 20% of an average home’s electricity use and save households up to £110 a year.

If you live in a flat, rent your home or don’t have a suitable roof for traditional solar panels, a small panel on a balcony or in the garden could give you a way to generate some of your own electricity.

Why is everyone talking about them?

The big change came in August 2026, when new rules came into force allowing compliant plug-in solar systems to be sold and used across the UK.

That has opened up a completely new market. Major retailers including Argos, B&Q, Currys, Screwfix, Wickes and Amazon have been involved in bringing the products to the UK, with prices starting at around £400-£500 for some systems.

Moneysavingexpert.com estimates a typical payback period of around four to six years, based on the expected savings.

But there are some limitations…

The low price and simple installation might be appealing, but plug-in solar is not a replacement for a full solar PV system.

An 800W plug-in system is much smaller than a typical rooftop solar installation. It can help power appliances while the sun is shining, but it isn’t designed to provide all the electricity a typical home needs. The average UK household uses around 7.4kWh of electricity a day, according to Ofgem.

Plug-in solar works best when you are using electricity during the day. If your home is empty while the sun is shining and most of your electricity use happens in the evening, you won’t get as much benefit.

You also can’t currently get paid for surplus electricity exported to the grid from a plug-in system in the same way you can with a conventional solar installation using a Smart Export Guarantee tariff.

And while they are designed to be easy to install, that doesn’t mean you can simply put one anywhere and plug it in. You’ll need a suitable, secure and reasonably sunny location, and you may need permission from a landlord, freeholder or building owner. The Government also requires plug-in systems to be registered with the electricity network operator.

Are traditional solar panels better?

If you have a suitable roof and you’re looking to make a bigger difference to your home’s energy use, there are some clear advantages to a traditional solar panel system.

A professionally designed rooftop system can have considerably more generation capacity (several kilowatts) than a plug-in system, allowing you to produce much more of your own electricity.

Combined with your solar panels, a battery gives you somewhere to store excess electricity generated during the day, so you can use more of your own solar power in the evening. It can also work alongside your solar system to make better use of cheaper electricity from the grid when appropriate.

Traditional solar also gives you the option of exporting surplus electricity through a Smart Export Guarantee tariff, something that isn’t currently available for plug-in solar in the same way.

There is, of course, a bigger upfront cost. A rooftop system needs professional design and installation, so it is a much bigger investment than buying a small plug-in kit.

But if you own your home and have a suitable roof, it, a larger system can generate considerably more electricity over its lifetime, and a properly designed solar and battery setup can become a much bigger part of your home’s energy system.

Which option is right for you?

Plug-in solar has a place. If you’re in a flat, renting or don’t have a suitable roof, it could be a relatively affordable way to start generating some of your own electricity.

But if you have a suitable roof and you’re looking to make a bigger long-term investment in renewable energy, a professionally installed solar panel system is likely to give you much more generation and more options for using and storing the electricity you produce.

We design solar systems around your home rather than offering a one-size-fits-all solution. We can look at your roof, your electricity use and whether battery storage could work alongside your panels, and give you honest advice on whether solar is right for your home.

If you have any questions, get in touch with our specialists at info@eerenewables.co.uk or call 0800 802 1116.

Try our instant quote tool, and get £100 off a solar panel system with the code SOLAR100.