Energy & Insulation
Insulation, draughts, solar and smarter heating — the upgrades that genuinely cut UK energy bills, ranked by payback.
With the energy price cap changing every quarter, this hub covers what actually moves a UK bill: loft and attic insulation, spray foam versus fibreglass, draught-proofing doors and windows, and whether fixing your tariff beats staying on the cap. We also cover solar panel costs and payback, home energy audits, and generator sizing for homes that need backup power, alongside the VAT rules on energy bills that catch a lot of people out.
Every cost and saving figure is checked against current UK suppliers and installer quotes rather than generic estimates, and the insulation advice accounts for older housing stock: solid walls, draughty sashes, lofts that were never properly done. The goal is straightforward, know which fixes pay back fastest, which are worth doing this year, and which UK-specific rules, Part P, VAT rates, actually apply before you spend anything.
Energy & Insulation · 8 min read
How to Stop Heat Escaping Through Your Windows Without Replacing Them
Sealing draughts is only half the job. Here is how to reduce heat escaping through cold window glass without paying for replacement windows.
Energy & Insulation · 7 min read
October's Price Cap Rise Is a Gas Problem: What to Do Before It Hits
The October price cap rise is overwhelmingly a gas rise, so not every appliance deserves the same attention. Here is what is worth sorting before 1 October.
Energy & Insulation · 6 min read
Cheap Ways to Improve Heating: Radiator Reflectors, TRVs and Tweaks That Pay Back
Seven heating tweaks under £250, ranked by honest payback: the free boiler setting worth £60 a year, when reflector panels actually work, and what a fair TRV fitting quote looks like.
Energy & Insulation · 5 min read
Heat Pump Running Costs vs Gas in 2026: The Real UK Numbers
Whether a heat pump beats gas on running costs comes down to two numbers: your SCOP and the electricity-to-gas price ratio. Here's the 2026 maths, worked through for three UK house types.
Energy & Insulation · 6 min read
How to Find the Cheapest Energy Supplier (Autumn 2026 Guide)
Suppliers release their best fixed deals around the October cap announcement — and most people switch to the wrong one. Here is the method for finding the tariff genuinely cheapest for your usage.
Energy & Insulation · 6 min read
VAT on Energy Bills Explained: The 5% Rate and What You Can't Avoid
Every unit of gas and electricity you buy carries 5% VAT, and the debate about scrapping it keeps returning. Here is what the tax actually adds to a typical bill, and which parts of that bill you can genuinely control.
Energy & Insulation · 6 min read
Energy Price Cap October 2026: What the New Cap Means for Your Bills
Ofgem announces the October–December cap by 26 August, and forecasters expect a small rise. Here is what the cap really limits, why your bill may differ, and what to do before 1 October.
Energy & Insulation · 6 min read
Should You Fix Your Energy Tariff or Stay on the Price Cap? (Autumn 2026)
Fixed deals are pricing just below the cap, and Ofgem confirms the October figure by 26 August. Here is how to decide properly, and why the sums come out differently in a draughty Victorian terrace.
Energy & Insulation · 6 min read
Water Saving Landscaping Ideas for Real UK Gardens and Budgets
Most gardens that suffer in a dry July are not short of rainfall — they are losing it. Work out which way yours loses water, and the right fixes become obvious and much cheaper.
Energy & Insulation · 8 min read
Sustainable Home Improvement Ideas for Real UK Homes and Budgets
Most eco upgrades fail because they fix a problem the house never had. Diagnose first, then spend — here is the order that actually works in British housing stock.
Energy & Insulation · 6 min read
How to Insulate an Attic: A UK Loft Insulation Guide
Most British lofts hold 100mm of flattened 1980s wool and a worn path to the water tank. Here is how to get to a proper 270mm without falling through the ceiling or creating a condensation problem.
Energy & Insulation · 6 min read
How to Size a Home Generator: UK Loads, kVA Maths and the Part P Limit
Most people buy far too much generator, or far too little. Here is the arithmetic that actually decides it for a British house, plus the legal line you cannot cross with the wiring.
Energy & Insulation · 6 min read
How Do Solar Panels Work? The Complete UK Guide (2026)
A solar panel is not a battery and it does not make heat. It is a slab of doped silicon that turns daylight into direct current — here is what happens next, and what it is worth in a British climate.
Energy & Insulation · 6 min read
Home Energy Efficiency Checklist for Older UK Houses (Printable)
Most energy checklists assume a 1990s cavity-walled box. If your house has solid brick, sash windows and lath and plaster, half the standard advice is wrong and some of it causes damp.
Energy & Insulation · 5 min read
How Much Does Insulation Cost? 2026 UK Price Guide
Insulation quotes in the UK swing from £600 to £22,000 for what sounds like the same job. Here are the real per-square-metre rates, and why a Victorian terrace costs several times what a 1990s semi does.
Energy & Insulation · 6 min read
How to Weatherstrip a Door: Diagnose the Draught First, Then Seal It
Most draughty doors get the same £4 roll of foam tape, and most are still draughty by February. Here is the order a joiner works in, and how to find out what is actually leaking.
Energy & Insulation · 5 min read
How Much Does a Home Energy Audit Cost? UK 2026 Price Guide
The most expensive survey is the one that answers a question you were not asking. Here are 2026 UK prices for every kind of energy assessment, and how to tell which one you need.
Energy & Insulation · 5 min read
How Much Does a Standby Generator Cost in the UK? 2026 Price Guide
Most UK standby generator quotes land between £7,000 and £16,000 fitted, and the badge on the canopy is rarely what moves the number. Here is where the money actually goes.
Energy & Insulation · 6 min read
How Much Do Solar Panels Cost in the UK? 2026 Price Guide
A fully installed UK solar array is a five-figure decision dressed up as a four-figure one. Here is what the trade actually charges per kWp, and which line items quietly double a quote.
Energy & Insulation · 6 min read
How to Fix a Draughty Window (Cheapest Fixes First)
The cold coming off your window is usually one of four gaps, and only one of them is expensive. Here is how to find which, seal it properly, and do it reversibly if you rent.
Energy & Insulation · 6 min read
Spray Foam vs Fibreglass Insulation: Differences, Pros, Cons and UK Costs
One of these is a £400 Saturday job you can undo with a bin bag. The other is a five-figure commitment your surveyor may refuse to sign off. That difference matters more than the lambda value.
Energy & Insulation · 6 min read
Signs Your Home Needs More Insulation (and What Fixing It Actually Costs)
Cold walls, a heating system that never switches off and black mould in the corners are all the same conversation. Here is how to diagnose it in twenty minutes, and what the fix genuinely costs in the UK.
Energy & Insulation · 5 min read
Eco Friendly Insulation Options: What Actually Works in UK Homes
Sheep's wool, wood fibre, hemp, cork or recycled mineral wool? The right answer depends less on the label and more on which heat-loss problem your house actually has.
Energy & Insulation · 6 min read
Home Air Sealing Checklist for UK Houses (Printable)
A 1930s semi leaks roughly twice as much air as Building Regulations now allow in a new build. Here is the job list that closes the gap, with real times, real costs and the point where you stop and phone someone.
Energy & Insulation · 6 min read
Blown-In vs Batt Insulation: Differences, Pros, Cons and UK Costs
Two ways to fill the same space, two very different jobs. Here is how loose-fill and mineral wool quilt really compare in British lofts and cavities, with installed prices.
Energy & Insulation · 6 min read
How Much Does Rainwater Harvesting Cost? UK Prices for 2026
Rainwater harvesting in Britain ranges from a £45 butt to a £6,000 buried tank. Here are the real 2026 numbers, what your installer is actually charging for, and when the sums simply do not work.
Energy & Insulation · 6 min read
Solar Panels vs Solar Shingles (Solar Tiles): UK Costs, Pros and Cons
Same silicon, very different bills. Here is what solar tiles actually cost against ordinary panels on a British roof, and the one situation where they genuinely make sense.
Energy & Insulation · 6 min read
Reclaimed Wood vs New Wood: UK Costs, Pros, Cons and Where DIY Must Stop
A salvage yard will sell you century-old Baltic pine for less per square metre than new oak. Here is what the price ticket hides, and which jobs you must hand to a professional.
Energy & Insulation · 6 min read
Low VOC vs Zero VOC Paint: What UK Labels Mean, Real Costs and Which to Buy
Three tins of white emulsion at £3, £9 and £22 a litre all claim to be kind to your lungs. Here is what the labels actually mean in Britain, and where the money really goes.
Energy & Insulation · 6 min read
How to Reduce Water Use at Home: A UK Step-by-Step With Real Costs
Most water-saving advice ignores the part that actually costs you money: heating it. Here are the jobs in order of payback, with real UK part prices and plumber rates.
Energy & Insulation · 6 min read
Attic Insulation: R-Values, UK Regional Targets and What It Costs
Most UK lofts hold about half the insulation they should. Here is what R-value means in metric, the depth each UK nation expects, real prices, and the point at which the job stops being DIY.
Energy & Insulation · 6 min read
Portable vs Standby Generator: Differences, Costs and Which Suits a UK Home
One costs about £2,000 over a decade and lives in the shed. The other costs £14,000 and starts on its own. With British power cuts, only one of them usually makes sense.
Energy & Insulation · 6 min read
How to Collect Rainwater: A UK Water Butt and Harvesting Guide
A single downpipe on an average UK roof throws away tens of thousands of litres a year. Here is how to capture it properly, what it really costs, and where the water regulations draw the line.
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