Plug-in solar panels will soon be available in DIY shops and High Street retailers in the UK following a government rule change allowing their legal sale. These panels are cheaper than traditional roof panels, can be installed without an electrician, and are suitable for properties with outdoor space, including balconies. Retailers such as Argos will begin stocking these products starting Thursday, with expectations that other retailers will follow.
The government anticipates that plug-in solar panels will help households save on energy costs and reduce dependence on imported fuel, which has seen price fluctuations due to recent conflicts in the Middle East. Experts recommend that customers have their wiring checked by a professional before purchasing the panels.
The government aims for these plug-in panels to provide a more affordable entry point into solar energy compared to roof installations, although the energy savings will be lower due to reduced power generation. A one-panel kit is priced at £699, while a two-panel kit is £1,089, with anticipated future prices settling between £400 and £600 as competition increases.
Research indicates that households could save between £70 and £110 annually on energy bills, depending on factors such as panel orientation and usage duration. Optimal placement is an unshaded south-facing area, and households that consume energy during daylight hours will benefit the most, as excess power will flow back to the grid without compensation.
Unlike rooftop solar panels, these plug-in systems do not require certification under the Microgeneration Certification Scheme (MCS), which typically qualifies systems for the Smart Export Guarantee. The output of these systems is limited to 800 watts, sufficient for powering essential appliances like fridges but not high-demand devices like kettles. British Gas noted that while plug-in panels won't fully power a home, they can significantly reduce daytime electricity purchases.
Government tests have shown that these systems can operate safely without unacceptable heating or energy flows. Each device includes a microinverter that monitors the connection to the grid and shuts down if a power cut occurs. To be legally sold in Great Britain, the panels must meet the G98 standard and government specifications, with compliance listed on the Energy Networks Association's public register.
Consumer safety charity Electrical Safety First advises buyers to purchase from established retailers and warns against third-party sellers on online marketplaces due to potential safety concerns. They recommend having electrical systems checked by a registered electrician, especially in older homes, and advise against connecting the panels through extension leads or adaptors. Each panel kit includes a mounting kit and instructions, and while professional installation is not required, users must notify their local electricity Distribution Network Operator within 28 days of installation.