The Department for Energy Security and Net Zero has announced that compliant plug-in solar panels became lawful to buy and use across Great Britain on 27 August 2026. In the department’s account, the change opens a new route into small-scale electricity generation for households that do not want, or cannot install, a fixed rooftop system. DESNZ said each kit can produce up to 800W of power and could save a household up to £110 a year. The department also said that level of output could cover as much as 20% of average household electricity use, roughly enough to run a fridge, television, Wi-Fi router, laptop and phone charger during strong sunlight.
The rule change is being presented as a safety-led market opening rather than a simple retail announcement. According to DESNZ, the products underwent independent testing across the main electrical components, and compliant devices were found to be safe and compatible with UK wiring. Officials also said the UK safety specification is stricter than the one used in Germany, where plug-in solar is already established. The department cited about 500,000 new devices being plugged in there last year, using that comparison to argue that a portable, small-scale format can be expanded without weakening electrical safeguards.
The commercial rollout is expected to move quickly. DESNZ said retailers including Currys, B&Q, Screwfix and Amazon had worked with government on the introduction, while Amazon, Argos, Currys, Wickes and British Gas have all indicated that they will stock or supply the products through online or store channels. For households, the attraction is the lower entry cost. The government’s case is that plug-in kits avoid the installation expense associated with a conventional rooftop array, while still allowing homes to generate some electricity directly when weather and positioning are suitable.
Permission rules remain a central constraint, particularly for renters, leaseholders and owners in protected buildings. Government guidance says plug-in solar devices may be suitable for outdoor spaces and some balconies, but households should check in advance whether landlord consent, freeholder approval, planning permission or listed building consent is required. That means the policy does not create an automatic right to install. DESNZ said decisions will still rest with landlords, freeholders and councils, and that cases should be considered individually. The Energy Saving Trust has published a checklist on installation and permissions, while the Energy Networks Association hosts a list of accredited devices and manufacturers.
Ministers are placing the announcement within a broader affordability programme. In the same communication, the government linked plug-in solar to its wider effort to ease energy costs, alongside the Prime Minister’s July plan to cut VAT on energy bills ahead of winter 2026-27 and earlier support measures already cited by ministers. DESNZ said those earlier steps included £150 removed from energy bills in the previous Budget and the expansion of the £150 Warm Home Discount to around six million households. Read in that context, plug-in solar is being framed not only as a clean power measure but also as a modest household cost intervention tied to energy security.
The policy arrives during a period of strong demand for domestic energy technologies. DESNZ cited MCS figures showing almost 150,000 certified solar installations in the first six months of 2026, which it said was 17% above the previous highest start to a year, recorded in 2025. The same dataset showed about 36,000 certified battery installations in the first half of 2026, almost double the equivalent period a year earlier. For policymakers, that suggests a consumer market already responsive to home energy technologies, with plug-in solar potentially widening access for properties where full rooftop solar is impractical.
The practical effect will vary significantly between households. Savings will depend on access to sunlight, available outdoor space, property restrictions and how much electricity is used during the day. The government’s estimate of up to £110 a year should therefore be read as a top-end illustration rather than a universal outcome. DESNZ contrasted the new kits with conventional rooftop solar, where it said homeowners can already save up to £480 a year. The policy significance is that plug-in solar broadens eligibility rather than replacing the existing model: it offers flats, rented homes and lower-budget households a route into home generation, while leaving safety compliance, product accreditation and permission checks firmly in place.