What's Changing for UK Solar Panels and Heat Pumps in September 2026?
September 2026: Ofgem confirms Q4 cap up 4% to £1,723/yr as gas hits 7.97p. BUS £9,000 grant for oil homes. Heat pumps now beat gas on the spark gap.
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Monthly briefings on energy prices, industry news and the changes worth knowing about now.
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Energy prices and clean-energy policy do not stand still. Our dated briefings track the changes that matter to UK households, with context to help separate a headline from a decision.
October 2026: Ofgem sets the price cap at £1,723, electricity VAT falls to 0%, and heat pump grants reach £9,000 for eligible off-gas homes. Compare your options.
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September 2026: Ofgem confirms Q4 cap up 4% to £1,723/yr as gas hits 7.97p. BUS £9,000 grant for oil homes. Heat pumps now beat gas on the spark gap.
August 2026: Gas bills up 27.7% as Q3 cap bites at 7.33p/kWh. BUS hits £9,000 for oil homes from 21 July. UK solar passes 2 million installs. Heat pumps now cheaper to run than gas at the 3.56 spark gap. Warm Homes Loan Scheme launches September.
July 2026: The Q3 cap is now live at £1,862 - a 13% rise from 1 July. UK solar broke a historic 16GW during the June heatwave. BUS grant rises to £9,000 for oil-heated homes. Full breakdown of Q3 rates, the Octopus Nook battery, COP 4.71 heat pump data, and the September Warm Homes Loan.
June 2026: The Q3 price cap is confirmed at £1,862 — a 13% spike from 1 July. UK solar smashed its all-time daily record with 89.74 GWh on 17 May. Full breakdown of the new cap rates, Duracell Dura5 launch, Tesla VPP timeline, and a £44 million ECO4 fraud crackdown.
May 2026: UK solar smashes all records with 15.42GW on 23 April. Bills down now but an 18% price spike looms in July. Full breakdown of SEG rate cuts, balcony solar legalisation, Duracell's AI battery launch, and the 0% VAT deadline you must not miss.
April 2026: The Ofgem price cap drops 7% to £1,641, but analysts are forecasting a 20% spike by July. Full breakdown of heat pump grants, Tesla's VPP launch, record UK solar output, and what to do before the window closes.
Independent-minded guidance
Written by Mark Anthony Haines, with over a decade in UK renewable energy. We work from published policy, industry data and real-world performance, and explain the assumptions behind the numbers.
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