The solution to rising electricity bills might soon be found middle aisle of Lidl, with news that high street supermarkets are to start selling cheap, plug-in solar panels.
Thanks to a regulatory shake-up by the UK government, smaller plug-in solar panels will soon be appearing on UK shelves. Retail giants including Lidl and Amazon, alongside dedicated power brands like EcoFlow, are preparing to stock these DIY mini power plants for around £400.
Portable solar panels offer free, renewable energy that bypasses the need for expensive scaffolding, an electrician’s sign-off or a second mortgage to install. But before you chuck a solar array into your trolley alongside the weekly shop, here’s exactly how this plug-and-play tech actually works, and whether it will genuinely save you any cash in the long run.
Read more: Check out our review of the best portable solar chargers
What is a plug-in solar panel?
Plug-in solar panels are about as basic as the tech gets. The kits typically consist of one or more lightweight solar panels and a microinverter. Many are foldable too, so you can easily store them away when they’re not needed.
Many plug-in solar panels are water and dust resistant for all-weather use (Steve Hogarty/The Independent)
Crucially, you don’t need a professional to fit them and they don’t need installation. You simply hang the panel on a sunny balcony, strap it to a garden fence or prop it up on a patio, and then plug it directly into a standard 3-pin wall socket. The microinverter syncs with your home’s electrical grid, meaning your appliances will automatically use the free, sun-generated power before they start pulling expensive electricity from your supplier.
The plug-in solar panel concept is already popular in places like Spain and Germany, where roughly half a million of these devices are plugged in every year. Until now, UK wiring regulations effectively banned them without an electrician’s sign-off, but the government’s intervention changes all that.
Read more: I swapped my heavy power bank for this £99 folding solar panel
How much will they save you?
You won’t be taking your house entirely off the grid with a single plug-in panel, but it will put a dent in your electricity usage, powering things like your fridge, your wifi router and your laptop while the sun is shining.
The government estimates that a typical UK home could save between £70 and £110 a year on their energy bills. At an upfront cost of around £400, that means the panel will pay for itself in around four years. Given that a decent solar panel has a lifespan of around 15 years, you’re looking at a decade of pure profit once the initial outlay is cleared.
Compare that to a traditional rooftop solar array, which typically sets you back upwards of £6,000 and requires a lengthy payback period, and the appeal of the plug-and-play model is clear.
When and where can you buy them?
The Department for Energy Security and Net Zero says the kits will be available “within months”, with brands like EcoFlow hoping to have stock ready in time for the summer.
Lidl has welcomed the regulatory changes, saying the panels will make sustainable living affordable for everyone. Amazon is also confirmed to be participating in the rollout, meaning you’ll soon be able to order a personal solar power plant with next-day delivery.
This announcement is part of a broader government push for clean energy – including the new Future Homes Standard, which mandates solar panels and heat pumps on new builds from 2028. For anyone with an older property, or renting a flat with a bit of sunny outdoor space, plug-in solar lowers the barrier to entry.
If you have £400 spare and a south-facing railing, buying your own miniature power plant alongside your weekly groceries could be the smartest financial decision you make this year.
Want even more power? I swapped my heavy power bank for this £100 folding solar panel
