Solar energy just had its best-ever month in the UK — as the first plug-in solar kits prepare to go on sale within weeks

• August 3, 2026

• Solar energy just had its best-ever month in the UK
• Rooftop panels and farms provided 14.4% of the country’s electricity
• The record comes ahead of the legalisation of plug-in solar kits soon

Our gardens may be wilting in this exceptionally dry, sunny summer in the UK, but one thing that is benefitting from all the rays is solar panels. Solar energy just had its best-ever month for supplying power to the grid — and plug-in solar panels are aiming to keep that run going when they become legal later this month.

Alongside solar farms, rooftop panels — which are surging in popularity — helped provide an impressive 14.4% of the UK’s electricity in July (via The Guardian). That’s 50% more than this time last year, according to National Energy System Operator (Neso) data, and helped to power the fans and air con units we’re all relying on to survive while working from home.

The record comes from a combination of two factors. The incredible amount of sunshine we saw in July helped — the UK bathed in around twice the amount of sunshine hours that it usually gets on average at this time of year.

But it was also powered by the popularity of solar panels, which many are installing to help cut their energy bills in the UK. The country saw more solar power installations in the first half of 2026 than in any similar period for 15 years, while last year saw the highest total number of solar installations (269,000) ever recorded in a calendar year, according to government data.

Those figures include ground-based solar farms, but a significant proportion (just under a third of the UK’s total solar power) is provided by rooftop panels. However, with these panels still prohibitively expensive for many, eyes will now be turning to the legalisation of plug-in solar kits from August 27.

It’s unfortunate that plug-in solar panels weren’t legalised a few months ago, when they could have contributed to these record UK solar energy figures.

Still, the UK government made the welcome announcement last week that these plug-in solar kits — which can send electricity into your wall socket without needing professional installation — will become legal from August 27. That’s good news if you’ve felt frozen out of solar due to its cost, a lack of roof access or the fact that you’re renting.

The Statutory Instrument 2026/848 clears the blocks that previously prevented UK residents from buying self-installed, ‘plug-in’ solar systems. The August 27 date is more of a legal landmark, so it isn’t clear exactly when these kits will go on sale. But you can expect to see them in the likes of Lidl, Currys and Amazon soon, when they’ll apparently cost around £400 and could save households up to £70-£110 a year.

While many have argued that plug-in batteries could be the real home energy revolution (they were left out of the government’s new legislation), the combination of this new solar energy record and the legalisation of plug-in solar kits later this month means that renewable energy is having a big moment.

“Fifteen years ago, solar energy was a footnote in the electricity mix,” said Chris Hewett (Chief executive of Solar Energy UK). “Now it is a major player, delivering homegrown, cheap, clean and reliable energy.”

“The UK is firmly in its second solar boom, joining the trend we’re seeing worldwide, as households and governments look to it as a low-cost and local alternative to oil and gas,” added Frankie Mayo, a senior analyst at Ember.

The UK is still well behind Germany when it comes to balcony solar (which is called ‘Balkonkraftwerk’), as you can see in the graph above, but at least the country’s sun-powered potential is now finally on the charge.

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Solar energy just had its best-ever month in the UK Rooftop panels and farms provided 14.4% of the country’s electricity The record comes ahead of the legalisation of plug-in solar kits soon Our gardens may be wilting in this exceptionally dry, sunny summer in the UK, but one thing that…