Overview
- The Department for Energy Security and Net Zero published a statutory instrument that comes into force on 27 August, making plug-in solar legal in Great Britain.
- Only devices that meet the government’s interim product specification will be allowed, with a maximum rated output of 800W and a limit of one device per electrical circuit.
- Major retailers including Currys, B&Q, Asda, Screwfix, Wickes and Amazon have signalled plans to sell compliant kits, but exact shop‑floor dates and final compliance checks are still being finalised.
- Industry estimates and government analysis put retail prices at about £400 and potential household savings at roughly £70–£110 a year, meaning typical payback could be around four years depending on sunlight and usage.
- Ministers are reported to be considering separate measures for plug‑in home batteries and targeted subsidies or bulk buys for lower‑income households to store daytime solar generation for evening use.