The homeowner research library
Clear-eyed guides to solar panels, heat pumps and home energy. Real numbers, policy explained, and the detail that matters before you commit.
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Showing 37–48 of 61
Should I leave my heat pump on all the time? Discover the counter-intuitive physics of weather compensation and why turning it off spikes your bills by 33%.
Boiler upgrade scheme EPC requirements changed in May 2024. Discover why your poorly insulated home now qualifies for the £7,500 heat pump grant without fabric upgrades.
Do I need bigger radiators for a heat pump? Discover the truth: 53% of UK homes need zero radiator changes, and only 7% need targeted Type 22 panel upgrades.
A heat pump with microbore pipes is widely called impossible. The maths says otherwise - and could save you £4,500 in unnecessary repiping. Here is the proof.
A 10 kWh battery on Octopus Go saves £450–£755 per year through overnight arbitrage. Full 2026 guide: which batteries to buy, installed costs, 0% VAT deadline (March 2027), honest 6–9 year payback numbers, and why GivEnergy's April 2026 administration matters.
At Q3 2026 Ofgem rates, a heat pump at SCOP 3.2 delivers useful heat at 8.2p/kWh — virtually identical to a 90% gas boiler at 8.1p. Switch to a dedicated heat pump tariff and the 15-year saving exceeds £8,700. Full cost breakdown, BUS grant explained, 3-scenario TCO model, and the HEM Band D trap waiting for gas boiler owners in 2027.
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.
On solar-saturated UK streets, standard EV chargers are cutting out mid-session — not because anything is broken, but because the grid voltage hits 253V and Clause D protection kicks in. This guide explains the physics, the regulatory stalemate with your DNO, and the Clause E hardware fix that solves the problem without an earth rod.
The UK Government has increased the Boiler Upgrade Scheme grant by 20% — from £7,500 to £9,000 — for homes currently heated by oil or LPG, effective 21 July 2026. Gas-connected homes remain at £7,500. Here is exactly who benefits, what the net cost of a heat pump now looks like, and the steps to take before this funding window closes.
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.
The government is scrapping the SAP-based EPC in H2 2027 and replacing it with the Home Energy Model — four separate metrics, half-hourly physics simulations, and a hard Band D cap that locks gas boilers out of the top ratings permanently. This guide explains what HEM means for your property value, your MEES compliance deadline, and why battery storage goes from invisible to essential overnight.
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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