Plug-In Solar Panels Reach UK High Streets After a Quiet Rule Change

Plug-in solar panels go on sale in British DIY shops and high street retailers this week after the government changed the rules permitting their legal sale. Argos stocks them from Thursday, with other chains expected to follow.

The appeal is the price and the absence of a tradesman. A one-panel kit runs about £699 and a two-panel kit £1,089, according to UK solar company UKSOL — a fraction of a roof installation, and installable by the householder on a balcony or in a garden.

Cheaper, and less powerful

The trade-off is output. A balcony panel generates materially less than a roof array, so the savings are correspondingly smaller. The government's case is one of access rather than efficiency: a household that cannot afford £8,000 for a roof system, or does not own its roof, has until now been shut out of generation entirely.

That makes renters and flat-dwellers the obvious constituency — a group almost wholly absent from a decade of domestic solar policy.

The safety caveat

Experts advise having household wiring checked professionally before buying. Current regulations permit only one such device to be plugged in, and the electrical safety case rests on the assumption that the circuit it feeds into is sound. In older housing stock that assumption does a great deal of work.

Ministers frame the change as insulation against volatile imported fuel prices, which have swung through the year on Middle East disruption. The more immediate effect is to move solar from a capital project requiring scaffolding and a contractor to something a customer can carry out of a shop — a change in category as much as in cost.