Plug-in solar panels, designed for smaller homes and flats, are now legally available for sale in Britain following a government rule change. However, consumers face significant delays in purchasing and receiving these devices, with only one major retailer currently offering them online and deliveries not expected until October.
Argos is the sole major retailer to have listed plug-in solar kits, with prices ranging from £599 to £989. The company's most affordable £599 kit includes a 515W solar panel and an 800W microinverter, but explicitly states it is not suitable for balconies. Customers purchasing from Argos will have to wait until October for their orders.
Other prominent retailers, including B&Q, Lidl, Wickes, and Amazon, have indicated that the panels will be available at a later date. B&Q anticipates having the panels in stock by October, emphasizing their commitment to ensuring the products are safe, compliant, and affordable. Amazon stated they do not yet have a firm launch date, while Currys also has not set a date for availability in Britain. Lidl has not provided an update on a potential launch.
These plug-in solar panels are estimated to save users between £70 and £100 annually on their energy bills. The government has promoted the devices as a practical way for households to generate their own power, reduce costs, and contribute to net-zero goals. Energy minister Michael Shanks highlighted that nearly 172,000 solar installations have been fitted across Britain since the start of 2026, with rooftop solar comprising over 70% of installations in July.
Despite the enthusiasm for increased solar adoption, industry experts have issued crucial safety warnings. Older wiring, inadequate electrical protection, and improper installation of plug-in solar panels can pose risks of overheating, electric shock, and fire. Electrical Safety First advises that not all homes are suitable for these devices.
Key safety recommendations include ensuring a home's electrical system is compatible, particularly regarding Residual Current Devices (RCDs). The organization suggests that homes with Type AC RCDs should not use plug-in solar systems without upgrading to a minimum Type A bidirectional RCD. It is also recommended that an electrician inspect the home's electrics before purchase, especially in older properties.
Furthermore, consumers are warned against connecting plug-in solar systems through extension leads, cable reels, or multiway adaptors, as these accessories can overheat and become overloaded. Reputable retailers and their official websites are advised for purchases, with a caution against third-party sellers on online marketplaces who may offer substandard or unsafe versions of the product. Finally, regulations permit only one plug-in solar panel system per household to maintain the effectiveness of protective devices. Experts also stress that individuals who rent their homes or live in flats should seek permission from their landlord or freeholder before installation, and that solar equipment should be considered in building fire risk assessments.