What Is Plug In Solar? A Beginner's Guide for UK Homes

What is plug in solar? It is a compact solar system, usually a small set of panels and a microinverter, that connects to your home through a standard three-pin socket instead of being wired in by an installer. The electricity it generates is used by the appliances already running in your home, so you buy less power from the grid.

According to the Department for Energy Security and Net Zero (DESNZ), plug in solar became legal to buy and use across Great Britain from 27 August 2026. This guide explains what the technology is and is not, who it suits, and how it compares with rooftop panels and portable power stations.

What is plug in solar, in plain English?

Think of it as solar power scaled down for ordinary homes. Instead of a roof full of panels, scaffolding and a professional installation, you get a compact kit that you mount outdoors and connect using a BS 1363 plug, the familiar UK three-pin plug.

The panels turn daylight into direct current (DC). A microinverter then converts it into alternating current (AC) that matches the 230V, 50Hz supply in your home, so your fridge, router or laptop can use it without you noticing any difference.

What does a typical plug in solar kit include?

• Solar panels: the modules that capture daylight, designed to sit on a balcony, patio, wall or in a garden.
• A microinverter: the unit that converts DC into grid-matched AC and switches off automatically if the grid goes down, a safety feature known as anti-islanding.
• A cable with a BS 1363 plug: the link to an ordinary socket.
• Mounting hardware: brackets, clamps or stands suited to your outdoor space.
• Monitoring, often through a smartphone app.

On the government's numbers, a plug in solar kit tops out at 800W and can supply up to one fifth of an ordinary home's electricity, saving as much as £110 in a year. DESNZ illustrates that with a sunny moment: fridge, television, Wi-Fi router, laptop, phone charger and an Xbox S all drawing power together.

What is plug in solar not?

Knowing the limits matters as much as knowing the benefits. It is a helpful top-up for your home, not a complete replacement for your energy supplier.

• It is not a whole-home system. At up to 800W per kit, according to DESNZ, it covers part of your daytime demand rather than all of it.
• It is not a backup supply. A standard kit relies on the grid being live, so when there is a power cut the microinverter stops supplying electricity.
• It is not a battery. The government's Plug-in Solar Device Interim Product Specification (IPS) covers plug-in solar without batteries and does not extend to plug-in batteries.
• It is not a free-for-all. According to the DESNZ consultation response, only IPS-compliant devices may be sold and plugged in.

The regulatory groundwork is worth knowing too. The DESNZ consultation, which ran from 16 to 30 June 2026 and received 466 responses, amended the Plugs and Sockets etc. (Safety) Regulations 1994 (PSSR) so that standard three-pin plugs can be approved for this use. Over 85% of respondents agreed with the IPS, according to the government response published on 16 July 2026.

Who is plug in solar best suited to?

Because there is no installation cost, as DESNZ points out, the technology appeals to households that could never justify, or are not permitted, a full rooftop project. The government adds that panels can go in any outdoor space or on some balconies.

Is plug in solar a good fit for renters?

Often, yes, because a kit is not a permanent fixture. You still need your landlord's agreement before fitting anything, and DESNZ lists landlord permission among the checks to make before buying.

What about flats and homes with small gardens?

Sunny balconies, patios, terraces and lawns are natural candidates. Leaseholders should speak to the building owner or freeholder first, and anyone living in a listed building may need listed building consent.

How does plug in solar compare with rooftop solar?

Both rely on the photovoltaic effect in silicon cells, but they differ in scale, installation and paperwork.

• Installation: a socket kit is set up by the householder and connected via a socket, while rooftop solar is fitted and wired in by a qualified installer.
• Scale: a socket kit produces up to 800W, per DESNZ, whereas rooftop arrays are usually designed to cover a larger share of household demand.
• Permanence: a balcony solar kit can move house with you, but rooftop panels normally stay with the property.
• Paperwork: hardwired generation connects under the G98 'connect and notify' process, with the electrician notifying the local Distribution Network Operator (DNO) within 28 days, according to the Anker SOLIX UK product page.

So what is plug in solar compared with a rooftop array? A low-commitment first step, while rooftop solar is a bigger investment for owners planning to stay put.

How is plug in solar different from a portable power station?

Both can sit on a patio and work with panels, but the difference lies in where the electricity goes.

• A socket-connected kit feeds your home circuit, so the power is shared by whatever is running in the house.
• A portable power station stores energy in its own battery and powers only the devices plugged directly into it, such as a laptop on a camping trip.
• A portable power station keeps working during a power cut for the devices connected to it, whereas a standard plug in solar kit shuts down when the grid fails.

Put simply, plug in solar reduces the electricity you draw from the grid, while a power station is a portable battery for specific devices. They solve different problems

Where does battery storage fit alongside plug in solar?

The drawback of panels without storage is timing: output peaks around midday, when many homes are empty.

The Anker SOLIX Solarbank 4 E5000 Pro home battery is engineered plug-in ready at hardware level and ships with an 800W default output, according to the Anker SOLIX UK product page. Under current UK rules, however, it must be hardwired on a dedicated circuit by a Part P-registered electrician. Socket connection of this device is not currently permitted, and Anker says it will publish plug-in guidance once UK rules and BSI product standards allow it: built plug-in ready, installed properly today.

What does the Solarbank 4 E5000 Pro offer?

• A LiFePO4 battery with a rated energy of 5,024Wh, per the official Anker SOLIX datasheet.
• Four MPPT trackers accepting up to 5,000W of solar input, according to the same datasheet.
• On-grid AC output of 800W by default, rising to up to 2,500W once hardwired by an electrician and adjusted in the Anker app, per the UK product page.
• A separate off-grid port that switches to battery backup during a power cut, according to the UK product page.
• IP66 protection and a 10-year warranty, per the official datasheet.

Here is how it compares with other options currently sold in the UK.

Competitor details in the table are a 29 September 2026 snapshot of the brands' UK shops and should be checked again before you buy anything. There is also a scope point worth knowing: the government's plug in solar interim specification covers panels without batteries, so a storage unit's socket status is a separate question.

What should a beginner check before starting with plug in solar?

A few checks up front will save frustration later.

Which steps should you follow?

1. Confirm permissions with your landlord, building owner or freeholder, and check whether planning permission or listed building consent is needed, as DESNZ advises.
2. Choose an IPS-compliant kit only.
3. Pick a bright outdoor spot with little shade.
4. Consider when you use electricity; heavy evening demand makes storage more valuable.
5. Buy from a reputable retailer; the government names Currys, B&Q, Screwfix, Amazon, Argos and Wickes.
6. If you opt for a home battery such as the Solarbank 4 E5000 Pro battery system, book a Part P-registered electrician for a hardwired installation.

Illustrative example: an 800W kit running at full output for one hour would produce 0.8kWh. Real output varies with weather, orientation, shading and season.

Conclusion

So, what is plug in solar? It is best understood as an accessible, small-scale entry point to solar energy: a socket-connected kit that trims daytime grid use without roof works or installation costs. It is not a whole-home system, a battery or a backup supply, and only IPS-compliant kits may be used.

If you want solar power to stretch into the evening, adding storage is the logical next step, and for now that means a hardwired installation by a qualified electrician. Start with permissions, choose compliant equipment and match the system to how you use energy.

Explore the Anker SOLIX Solarbank 4 E5000 Pro on the Anker SOLIX UK store to see how a plug-in-ready battery, installed properly today, can keep your solar energy working into the evening.

Frequently Asked Questions

Is plug in solar legal in the UK?

Yes. According to the Department for Energy Security and Net Zero, plug in solar became legal to buy and use across Great Britain from 27 August 2026. Only devices that comply with the government's Interim Product Specification may be sold and plugged in, so always check a kit's compliance before you buy it.

Do I need an electrician to set up plug in solar panels?

A compliant panel-only kit is designed to be set up by the householder and connected through a standard socket, and the government says there is no installation cost. Home batteries are different: the Anker SOLIX Solarbank 4 E5000 Pro must currently be hardwired by a Part P-registered electrician.

Will plug in solar still generate electricity on a cloudy day?

Yes, panels still produce some electricity in cloudy conditions, although output falls when light levels drop. Across the UK, generation is generally higher in spring and summer and lower in winter. Positioning panels in the brightest, least shaded spot available helps you get the most from each day.

Can I take a plug in solar kit with me when I move house?

In most cases, yes. Because a panel-only kit is not permanently wired into your home, you can usually unplug it, remove the mounting hardware and refit it at your new address. Remember to check permissions again with the new landlord, freeholder or local planning authority before installing it.

Does plug in solar keep working during a power cut?

No. A standard kit's microinverter uses anti-islanding protection, which means it stops supplying electricity when the grid goes down to keep engineers safe. For backup, a hardwired battery with an off-grid port, such as the Solarbank 4 E5000 Pro, can switch to battery supply.

How much could plug in solar save on my bills?

The government estimates that a plug in solar kit producing up to 800W could save up to £110 a year and cover up to 20% of an average home's electricity use. Your own result will depend on where you live, how panels are positioned and when you use power.