Britain crosses 22.8 GW of solar, and opens the plug

UK solar hit 22.8 GW in June with 27,391 new installs. From 27 August households may self-install up to 800 W per circuit.

UK government deployment data puts total installed solar capacity at 22.8 GW at the end of June 2026, pv magazine reported on 31 July. June alone added 132 MW across 27,391 new installations — the second-highest monthly installation count on record, behind March 2026's 28,782. Over the twelve months to the end of June, capacity rose 2.2 GW, or 10.9%.

The utility-scale pipeline behind that is substantial. The 373 MW Cleve Hill farm is now the largest operational UK solar project, and the government's seventh contracts-for-difference allocation round secured 4.9 GW of solar, of which 1.87 GW is expected online by 2028 and 3 GW by 2029. The application window for the eighth round closes on 7 August 2026.

The more interesting change is smaller. From 27 August, updated regulations allow UK households to self-install plug-in solar systems up to 800 W per electrical circuit. That removes the installer from the transaction for the entry-level product, which is historically the step that decides whether a technology reaches renters and lower-income households rather than only homeowners with capital and a roof they own. Manufacturers are timing launch events to the regulation change.

The caveats come from the trade itself. Segen's UK and Ireland managing director David Hope told pv magazine the category is an opportunity rather than a threat to rooftop solar, but conditioned that on tier-one manufacturers and on qualified electricians doing the installation — which is much of the friction the rule change removes. How that tension resolves decides whether 800 W plug-in solar is an access story or a niche.

Source: pv magazine