Each kit produces up to 800W of power, which is enough to provide up to 20% of an average home’s electricity use when the sun is shining, according to officials.

As they go on sale, ministers say prices could start off higher but they expect them to settle at around £400 to £600 – depending on the size and model – amid growing competition as more models come on to the market.

Currys, B&Q, Screwfix and Wickes are also among retailers that have committed to stocking plug-in panels.

The sale of the technology was previously restricted in the UK because of safety and wiring standards.