Plug-in solar panels are coming to a shop near you - here's what to know

Plug-in solar panels are set to become available at DIY shops and High Street retailers across the UK, following government changes to the rules. These panels are cheaper than traditional roof-mounted solar panels, can be installed without needing an electrician, and are suitable for properties with outdoor space, such as balconies. Major retailers like Argos are expected to stock these products from next Thursday.

The government hopes that these plug-in solar panels will help households save money and reduce their reliance on fluctuating overseas fuel sources due to the Middle East conflict. Customers should have their wiring checked by a professional to ensure safety before purchasing. The government anticipates that these panels will provide a more affordable entry point into solar energy compared to rooftop installations, although savings will be lower as they generate less power.

A one-panel kit will cost £699, while a two-panel kit will be priced at £1,089, according to UK solar company UKSOL. The government expects prices to decrease to £400-£600 as competition increases and more products become available. Researchers estimate that a household could save between £70 and £110 annually on their energy bills, depending on panel orientation, usage patterns, and sunlight exposure. Ideal placement would be a south-facing spot without shading.

Unlike traditional rooftop solar panels, these plug-in systems do not require certification under the Microgeneration Certification Scheme (MCS) and will not qualify for the Smart Export Guarantee, which pays users for excess solar power. However, they do offer a safe and controlled way to generate electricity for always-on electrical appliances like fridges and devices left on standby. Each kit can generate up to 800 watts, enough to power a fifth of an average household's electricity needs during daylight hours.

Though plug-in panels won't solely power a home, they can significantly reduce daytime electricity usage. British Gas notes that they can meaningfully decrease the amount of electricity households need to purchase. Each device comes with a microinverter that monitors the grid connection and shuts down instantly if there's a power cut or the panel is unplugged to prevent live electricity from entering dead wiring.

To remain legally sold in Great Britain, plug-in panels must pass the industry's G98 standard and the government's product specifications. These compliant devices will be listed on the Energy Networks Association's public register, so buyers should verify this before purchasing. Consumer safety charity Electrical Safety First advises consumers to buy from established retailers and their own websites, avoiding third-party sellers on online marketplaces.

Consumers should also have their electrics checked by a registered electrician, especially in older properties, and never connect the panel through an extension lead, cable reel, or plug-in adaptor to prevent overheating. The panels come with mounting kits and simple instructions, but professional installation is not required. Once installed, users must inform their electricity Distribution Network Operator (DNO) within 28 days of the installation.