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Small solar panels designed to plug into a household socket will have a lawful route to market and use from 27 August 2026. The change could bring solar power within reach of more renters and flat dwellers.
Plug-in solar is not simply another appliance. The product must meet a government safety specification, its connection must be notified to the local electricity network operator, and property-related permissions may still be needed.
The electrical and product safety regulations create the route for compliant products. A separate planning amendment for England makes them easier to install under permitted development rights. That planning change does not apply in Wales.
A plug-in solar device is a small solar photovoltaic system that turns sunlight into electricity and supplies it to the home through a standard plug and socket. It works alongside the public network, reducing electricity drawn from the grid when the panels are generating power.
To fall within the new rules, a device can have a maximum rated output of 800 watts. It must not include battery storage, apart from the limited power needed for control or auxiliary functions, and must comply with version 2 of the Plug-in Solar Device Interim Product Specification.
A tenant who cannot install rooftop solar may be able to use a reversible panel system in a suitable place. Electricity is used within the home as it is generated, so a household with daytime demand may cut its grid use.
The government's final impact assessment estimates that initial 800W systems may cost about £400 to £600. Its modelling gives illustrative annual savings of about £110 for a south-facing system angled at 30 degrees, or £70 for a vertical east or west-facing setup. The assumptions include little shading, home-all-day electricity use, and July to September 2026 Ofgem unit rates. These are not promised returns.
Actual savings will depend on orientation, shade, and daytime use. Payment for exported electricity may not be available at first because the Smart Export Guarantee generally requires suitable metering and MCS or equivalent certification.
Landlords are likely to receive more requests from tenants. A removable installation may be acceptable, but consent should follow a proper look at the product, fixing method, and building. Anything with a plug is not automatically suitable.
Only products complying with the interim specification may be sold and connected under the new route. The government's consultation response says consumer guidance will be published for commencement. A product advertised online as "balcony solar" will not necessarily meet the UK requirements.
The specification permits no more than one device, rated up to 800 volt-amperes (VA), on a household final circuit. Electricity network rules may initially be stricter by limiting a household to one device in total. Users should follow the launch guidance rather than combine units.
The manufacturer-supplied plug must go directly into a suitable socket. Extension leads, multi-way adaptors, travel adaptors, and plug-in RCD adaptors must not be used. The socket must not be damaged or degraded, and a label must be placed near the consumer unit.
A home with older fuse protection or without a modern residual current circuit breaker with overcurrent protection (RCBO) may need an electrician's check or an upgrade. Any alteration to the fixed installation is work for an electrician. Connection and disconnection must also be notified to the local distribution network operator, following the process available at launch.
The regulations do not give a tenant the right to alter someone else's property. The user must obtain any permission required from the landlord, freeholder, managing agent, or relevant authority. They should also check the effect on building insurance.
Planning rules do not override the tenancy agreement, a superior lease, or building controls. Written consent should identify the approved product, location, and fixing method, and who must remove it and make good when the tenancy ends.
Mounting must be reversible and non-permanent. It must not damage the structure, weatherproofing, or fire performance. The product specification prohibits installation on timber balconies and on ACM, MCM, HPL, or timber cladding systems. It also rules out buildings undergoing external-wall or building-safety remediation.
In a block of flats, a balcony panel may affect the external wall, fire strategy, or head lease. The managing agent or freeholder may therefore need to decide.
In England, the amended permitted development rules expressly recognise plug-in solar as solar PV for dwellinghouses and blocks of flats. Broadly, panels on pitched roofs must not project more than 0.2 metres or rise above the highest part of the roof, excluding a chimney. Panels on flat roofs may extend up to 0.6 metres above the roof, while wall and balcony limits depend on whether the installation adjoins a highway.
There are tighter controls for listed buildings, scheduled monuments, conservation areas, and World Heritage Sites. Panels on wooden walls, balconies, or timber-clad exterior parts cannot use this route. Garden systems face height, area, and boundary limits, with prior approval required in some sensitive locations.
Landlords should check the official Order against the proposed location and design. Permitted development remains conditional on minimising the effect on appearance and local amenity, with equipment removed when no longer needed.
Wales is different. The England Order does not amend Welsh planning law. A product may satisfy the new electrical and product rules in Wales, but the owner or occupier must check the separate Welsh planning position and any need for consent before installation.
A landlord considering a request should ask for product details, proof of compliance, the proposed position and fixing method, and how the network notification requirement will be met. Insurers may also need to be consulted.
A compliant system on a suitable modern installation may be straightforward. A timber balcony, restricted lease, questionable socket, or building with external-wall remediation is a reason to stop and investigate. Written consent should remain narrow and record what happens when the tenant leaves.