UK Solar Installations Passes 2 Million Homes! Plug-In Is Next!

Government figures published last week show UK households have passed 2 million solar installations for the first time, and that number is about to accelerate sharply when plug-in solar hits shelves this summer.

Department for Energy Security and Net Zero data confirms March 2026 was the busiest month for solar installations since 2012, with 27,607 new systems fitted in a single month. Total UK capacity rose 11.7% year-on-year. What makes the figure striking is that March came before BS 7671 Amendment 4 took effect on 15 April, the rule change that made 800W plug-in kits legal to connect without an electrician. The mainstream installation boom happened before the biggest demand driver had even switched on.

The national press has noticed. The Independent ran its first dedicated plug-in solar buyer's guide on 5 May, framing the Lidl and Amazon launches as a moment when renters and flat-dwellers can generate their own electricity for the first time. That kind of coverage, in a national newspaper, aimed at ordinary consumers rather than early adopters, is a reliable signal that a product category is about to move from niche to normal.

The BSI product standard that will certify kits for full self-installation is still expected in July 2026. Lidl, Iceland, Amazon and EcoFlow have all confirmed they will stock kits once that standard lands, with pricing around £400 for a basic 800W setup. For context, Germany ran the same playbook three years ago and registered 426,000 balcony solar installations in 2025 alone. The UK market is following the same trajectory, just starting later.

What this means for you: If you've been waiting to buy, the window between the BSI standard publishing in July and the 0% VAT deadline in March 2027 is when you'll get the most favourable conditions, certified kit, no VAT uplift, and a full generation season in summer 2027 ahead.