Guides and insights on solar, heat pumps, insulation and saving energy
Houses built between 1980 and 1999 usually have some insulation — just not enough. What builders fitted, what's typically missing, and the cheapest ways to close the gap.
5 August 2026
Same 13.5kWh, more than double the power, and the solar inverter moved inside the box. What Tesla changed between the Powerwall 2 and 3, and whether owners should care.
5 August 2026
Heatable and BOXT both sell fixed-price boiler installation online. We compare their published prices, brands, warranties and dated Trustpilot scores — neutrally, on public data only.
5 August 2026
The fridge freezer is the only appliance billing you 24/7. Here's what the rescaled A-G label means, what the kWh figure costs at 2026 prices, and the real A vs…
4 August 2026
The Warm Homes: Local Grant fully funds a landlord's first eligible rental and half-funds the rest — up to £30,000 per property. With EPC C required by 2030 and grant…
4 August 2026
Short cycling — a heat pump starting and stopping every few minutes — wears the compressor and inflates bills. Here are the causes, from oversizing to low water volume, and…
4 August 2026
The Powerwall 3 is good, but it isn't the only option. We compare five UK-available alternatives on capacity, backup and installed price, and say which suits which home.
4 August 2026
Oil-filled radiators cost 13p–65p an hour at full power, but thermostat cycling means real costs are usually much lower. Full size-by-size table and how duty cycles work.
4 August 2026
Worcester Bosch's Greenstar range dominates UK installs — but does the published data justify the premium? We look at warranties up to 12 years, efficiency and real installed prices.
3 August 2026
From £1,138 in early 2021 to a £4,279 crisis peak and back to £1,862 today — every Ofgem price cap level since 2021 in one table, with what drove each…
3 August 2026