UK Plug-In Solar Guide
Everything you need to know about plug-in solar kits for UK homes. Understand the rules, estimate realistic savings & payback, and find compliant kits — all in one place.
What is Plug-In Solar?
Plug-in solar kits are small solar panel systems that feed electricity directly into your home through a standard UK plug socket, reducing the amount of electricity you buy from the grid.
Up to 800W Output
New UK rules allow kits that supply up to 800W of power directly into your home via a standard plug socket.
DIY Installation
Compliant kits are designed for safe self-installation on a balcony, wall, shed roof, or freestanding in the garden.
From ~£350
Kits start at around £350 and can reduce electricity bills by £95–£155 a year depending on location and setup.
Perfect for Renters
For renters, flat residents, and homes without suitable roof space — a simpler, more affordable route into home solar.
How to Get Started with UK Plug-In Solar
Follow these six steps to estimate your savings, understand the rules, and get a compliant kit up and running at home.
Estimate Your Savings
Use a plug-in solar calculator to estimate likely generation, annual savings, and payback period for a compliant kit.
Estimate savings →Understand the UK Rules
New UK rules came into force on 27 August 2026, creating a safe and legal way to buy and self-install a compliant kit.
Read the rules →Buy a Compliant Kit
Compare complete UK-compliant kits and choose one that suits your space, mounting location, and budget.
Find compliant kits →Set Up Your Kit
Follow the supplied instructions and place the panels where they get plenty of daylight for maximum generation.
Boost solar output →Plug In & Start Saving
Solar electricity enters your home through a standard UK socket, helping reduce your energy bills for years to come.
Explore savings →Register Your Kit
Register your compliant kit through the ENA myplugin.solar portal no later than 28 days after installation.
myplugin.solar ↗UK Plug-In Solar Rules & Requirements
The UK government published new rules for plug-in solar which came into force on 27 August 2026. Households can now buy compliant kits designed to connect safely through a standard UK socket and install them without an electrician.
Renting your home?
You should get written permission from your landlord or property owner before installing a kit.
Based on the UK Plug-in Solar Device Interim Product Specification, Version 2.0
Key Rules at a Glance
- Inverter must be limited to a maximum output of 800VA (~800W)
- Up to four solar panels with combined capacity of 2,000W
- Must be supplied as a complete kit (panels, inverter, cables & mounts)
- Register through ENA's myplugin.solar portal within 28 days
- Compliant kits cannot include integrated battery storage
- Must not use extension leads or multi-way adaptors
- No installation on timber balconies or prohibited cladding
- One plug-in solar device per household
Costs, Savings & Payback
Plug-in solar is a low-cost entry into home solar generation with a strong payback potential for well-positioned systems.
Single-Panel Kits
From ~£350
£336 – £671
Smaller systems ideal for limited space. A single panel typically provides 400–475W capacity.
Two-Panel Kits
From ~£450
£390 – £989
The sweet spot for most homes. Two panels can reach the full 800W inverter limit more often.
Annual Savings
£95 – £155
3–5 year payback
Well-positioned 800W systems. Savings depend on location, panel angle, and daytime electricity use.
How much electricity does an 800W plug-in solar kit generate?
Across 124 UK postcode areas, an 800W south-facing setup angled at 35° generates around 794 kWh per year at the median — almost a third of the average UK household's annual electricity use (~2,500 kWh). However, actual savings depend on how much solar electricity your home uses while it's being generated, not just total generation.
Households at home during daylight hours save more because they can use solar electricity as it's generated. But even if nobody is home, always-on devices like fridges, freezers, and routers still benefit.
Estimate Realistic Savings & Payback
Built specifically around the official UK plug-in solar rules. Enter your postcode, panel setup, and household electricity use for a tailored estimate using postcode-level PVGIS solar data.
Postcode-Level Data
Uses European Commission PVGIS 5.3 solar radiation data for your UK postcode.
Realistic Assumptions
Cautious real-world assumptions rather than optimistic best-case scenarios.
UK Rules Built In
Models 800VA inverter limit, up to 4 panels, no battery storage — exactly per the UK spec.
Where Can You Install Plug-In Solar?
Plug-in solar panels can be installed in several locations. South-facing, tilted panels at around 35° give the best annual generation.
Ground-Mounted (Garden/Patio)
Popular with homeownersPanels sit on a freestanding frame — easy to position or move. Great for gardens and patios. Check for shading, secure mounting, and cable routing.
Roof-Mounted (House, Garage, Shed)
Best for generationInstall on suitable roofs for a good angle and out-of-the-way placement. Consider roof strength, waterproofing, safe fixing, and cable route.
Wall-Mounted
Space-savingFix panels vertically to an external wall or at an angle where the kit allows. Works well where garden or roof space is limited.
Balcony Solar
Ideal for flatsAttach to a balcony railing or enclosure. Particularly useful for flats and apartments. Check wind exposure, secure fixing, and whether permission is needed.
Direction & angle matter
South-facing panels normally generate the most electricity over the year, but south-east, south-west, east, and west-facing locations can also work well. Upright wall or balcony panels generate less than tilted panels, while shading from trees, buildings, or railings can reduce output significantly. North-facing panels are generally not recommended.
Who Is Plug-In Solar For?
A Good Fit If...
- You want a simpler, lower-cost way into home solar
- You're a renter, flat resident, or have no suitable roof space
- You have a bright, secure outdoor space with minimal shading
- You want something portable you can take when you move
- You use electricity during daylight hours (or have always-on appliances)
- You want to reduce your electricity bill by £95–£155/year
Less Suitable If...
- Your available space is heavily shaded
- You have nowhere safe or permitted to mount panels
- You expect a plug-in system to power your whole home
- You want to run large loads (electric showers, ovens, EV chargers)
- You need battery storage (not allowed under current UK rules)
Buying Checklist
Six things to check before buying a plug-in solar kit.
Check the kit is compliant
Only buy a complete manufacturer-specified kit marked compliant in the Plug-in Solar category of the ENA Type Test Register.
Make sure it suits your location
Think about direction, shading, and how the panels will be mounted. South-facing is best; east and west also work well. Avoid north-facing.
Check the cable can reach a socket
The supplied plug must connect directly to a suitable socket. Extension leads, multi-way adaptors, and plug converters cannot be used.
Check if you need permission
Renters need landlord permission. Leaseholders and flat owners may need freeholder or managing agent approval.
Verify your electrical setup
Your wiring and socket must be suitable. Electrical Safety First recommends at least a Type A bidirectional RCD on the circuit.
Check price and kit size make sense
A larger kit won't automatically give better value. Generation depends on placement; savings depend on how much electricity you use while generating.
Plug-In Solar vs Rooftop Solar
Different needs, different solutions. Here's how they compare.
Plug-In Solar | Rooftop Solar | |
|---|---|---|
| Typical cost | £350 – £1,000 | £5,000 – £12,000+ |
| Max output | 800W (inverter limit) | 3–10kW typical |
| Annual generation | ~500–800 kWh | ~3,000–8,000 kWh |
| Installation | DIY (self-install) | Professional installer |
| Battery storage | Not permitted | Optional add-on |
| Portable? | Yes — take it when you move | Fixed to property |
| Best for | Renters, flats, limited budgets | Homeowners, larger energy needs |
| Payback period | 3–5 years | 8–12 years |
Is Plug-In Solar Safe?
Yes. Compliant plug-in solar is designed to be safe for normal household use, provided the home's existing electrical installation and socket are suitable and the kit is installed exactly as the manufacturer specifies.
Electrical Safety First recommends that circuits used for plug-in solar are protected by at least a Type A bidirectional RCD. Homes with Type AC RCDs should not use plug-in solar without first upgrading the protection on those circuits.
Compliant kits are limited to 800VA output and must connect directly to a suitable socket without extension leads or multi-way adaptors.
Useful Resources
Official sources, calculators, and tools to help you on your plug-in solar journey.
Free Plug-In Solar Calculator
Estimate generation, savings, and payback using your postcode and setup.
Browse Compliant Kits
Every compliant plug-in solar kit currently available to buy in the UK.
UK Rules Guide
Detailed guide to plug-in solar limits, installation, planning, and DNO rules.
ENA Type Test Register
Official register of compliant plug-in solar configurations.
Savings Guide
Modelled UK savings for an 800W kit including payback and longer-term returns.
Plug-In Solar for Renters
Step-by-step guide for renters including permissions and installation advice.
myplugin.solar Registration
Register your compliant kit with the ENA within 28 days of installation.
Generation Guide
How location, direction, and angle affect annual plug-in solar generation.
Export Payments Guide
Which suppliers offer export tariffs and what your exported electricity might be worth.
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UK Plug-In Solar FAQ
Common questions about plug-in solar kits, UK rules, savings, and installation.
What is plug-in solar?▾
Plug-in solar kits are small solar panel systems that connect directly to your home through a standard UK plug socket. New UK rules, in force since 27 August 2026, allow households to self-install compliant kits that supply up to 800W of power. They reduce your grid electricity use during daylight hours — ideal for renters, flats, and homes without roof space for a full solar installation.
How much does a plug-in solar kit cost in the UK?▾
Compliant plug-in solar kits start at around £350 for a single-panel setup. Two-panel kits typically start from around £450, though prices vary depending on the panels, inverter, mounting system, and supplier. Competition is increasing as more compliant kits enter the UK market.
How much can plug-in solar save on electricity bills?▾
Modelling suggests well-positioned 800W systems could save around £95–£155 per year on electricity bills, depending on location, panel position, and household electricity use. Most kits should pay for themselves within 3–5 years.
Do I need an electrician to install plug-in solar?▾
Not necessarily. Compliant kits are designed for DIY installation — you mount the panels and plug the supplied UK plug directly into a suitable socket. However, Electrical Safety First recommends having your electrical installation assessed beforehand, especially in older homes. For kits with more than 960W of panel capacity, a professional assessment is recommended.
Is plug-in solar legal in the UK?▾
Yes. Since 27 August 2026, compliant plug-in solar kits can legally be bought and self-installed in Great Britain. The kit must meet the UK Plug-in Solar Device Interim Product Specification and be listed on the ENA Type Test Register.
Can renters use plug-in solar?▾
Potentially, yes. Renters should get written permission from their landlord before installing a kit. Leaseholders and flat owners may also need approval from a freeholder or managing agent. Ground-mounted freestanding kits can be a good option for renters as they don't require permanent fixtures.
Do I need to register my plug-in solar kit?▾
Yes. Compliant plug-in solar kits must be registered through the ENA myplugin.solar portal no later than 28 days after installation. The portal automatically notifies the DNO (Distribution Network Operator) responsible for your address.
What happens to solar electricity I don't use?▾
Excess electricity automatically flows back into the grid. You won't automatically be paid for it, though some suppliers like Octopus Energy now offer export tariffs to eligible plug-in solar customers. Our calculator currently excludes export income from savings estimates.
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