Solar Guides for UK Homes

Every guide we publish, organised by topic: what solar costs, what the Smart Export Guarantee pays, whether it is worth it for your home. All figures referenced to gov.uk, Ofgem, MCS and Energy Saving Trust sources you can check yourself.

Solar Panel Costs and Payback

What a UK solar system actually costs by size, what it saves against current electricity prices, and how long it takes to pay for itself.

Are Solar Panels Worth It in the UK? (2026)For most UK homes with an unshaded roof, yes, but payback runs 9 to 12 years, not the 5 the sales pitch implies. Here is the honest arithmetic on costs, savings and the homes where solar does not pay.
Solar Panel Installation Cost by System Size: 3kW to 6kW ComparedA 4kW solar system typically costs £5,500 to £7,000 installed, a 6kW system £8,500 to £10,500. Compare cost, panel count, roof space and output by system size, and work out which size suits your home.
How Many Solar Panels Do You Need? Panels, Roof Space and UsageMost UK homes need between 6 and 13 solar panels. Work out your own panel count from your annual kWh, using Ofgem's July 2026 consumption figures, and check it against your usable roof space.
Do Solar Panels Add Value to Your House? What the UK Evidence ShowsPeer-reviewed analysis of five million UK listings found a 6.1% to 7.1% sale price premium for homes with solar panels. Here is what that evidence does and does not prove, and why a rent-a-roof lease can cost you a buyer.
Solar Panels Cost UK: What to Expect in 2026A typical UK solar panel system costs around £7,600 for a 4.5kWp install. This guide covers cost by system size, 0% VAT, SEG export rates, payback periods, and what grants actually exist.
Electricity Cost Per kWh UK: What a Unit Costs in 2026A unit of electricity costs 26.32p under the Ofgem price cap from 1 October 2026, plus 54.83p a day standing charge. But the government cut VAT on electricity to zero for the winter, so the headline barely moved while the underlying price rose 5.8 per cent. Here are the real numbers, by region.

Grants, VAT and Paying for It

There is no universal UK solar grant. This is what does exist in 2026, what the 0% VAT rate is worth before it ends, and what borrowing to pay for solar really costs.

0% VAT on Solar Panels: The 2027 Deadline and What Happens AfterSolar panel installation is zero-rated for VAT across the UK until 31 March 2027, then reverts to 5%, not 20%. What the relief covers, the supply-and-install catch, and what the deadline is actually worth on a typical system.
Solar Panel Finance UK: What Borrowing to Pay for Solar Really CostsBorrowing for solar changes the payback, not the price. At the Bank of England's August 2026 loan rate, a £7,600 install on a 5-year loan costs £9,584.
Warm Homes Plan Solar Panels: Who Qualifies in 2026One strand of the Warm Homes Plan pays for solar panels in full today, in England only. Who qualifies, what you get, and where the loans stand.
Solar Panel Grants UK: What Actually Exists in 2026There is no universal UK solar grant. What does exist in 2026: fully funded solar for low-income homes under the Warm Homes Plan, ECO4 until December 2026, free installs via Nest in Wales, plus 0% VAT and SEG payments for everyone else.
ECO4 Ends 31 December 2026: What Replaces ItECO4 closes on 31 December 2026 and no supplier scheme replaces it. What that means for solar panels, and what public funding takes over.

Smart Export Guarantee and Getting Paid

Every supplier sets its own SEG export rate, and the spread between the best and worst is larger than most homeowners realise. Current rates, how SEG differs from the old Feed-in Tariff, and when using the power yourself beats exporting it.

Solar Power Diverter UK: The Hot Water Maths Nobody Shows You (2026)A solar power diverter sends surplus solar electricity to your immersion heater instead of the grid. Whether that makes or loses you money depends entirely on how you heat water now. The arithmetic, at today's Ofgem cap and today's export rates.
SEG vs Feed-in Tariff: What Changed and What You Get Paid Now (2026)The Feed-in Tariff closed to new applicants on 31 March 2019 and the Smart Export Guarantee replaced it. FiT paid government-set rates for 10 to 25 years; SEG rates are set by suppliers and ranged from about 3p to 18p per kWh in July 2026. How the schemes compare, and what to do if you still get FiT payments.
Smart Export Guarantee Rates Compared (2026)SEG export rates run from about 3p to 18p per kWh in 2026, and your supplier sets the number, not the government. Here are the current rates from Octopus, E.ON Next, EDF and British Gas, and what the small print costs you.

Planning Rules, Grid Connection and Insurance

Permitted development differs in all four UK nations, and a conservation area or a listed building changes the answer again. Plus the G98/G99 grid notification your installer files, and what to tell your insurer.

Do You Need Planning Permission for Solar Panels? Permitted Development by NationRooftop solar is usually permitted development across the UK, but the limits are different in England, Wales, Scotland and Northern Ireland. The projection limits, flat-roof rules, conservation area traps and listed building position, verified against each nation's own source.
G98 and G99 Explained: Connecting Solar Panels to the Grid (2026)G98 covers solar systems rated under 16A per phase, which is 3.68kW per phase: you fit first and notify the DNO within 28 days. Above that it is G99 and you apply before connecting. What the thresholds mean, who fills in the forms, and why Northern Ireland runs a separate process.
Solar Panels on New Builds: What the Future Homes Standard Requires (2026)From 24 March 2027 every new home in England must have on-site renewable generation. Approved Document L sets the size at 0.22kWp per square metre over 40 per cent of your ground floor area. Here is what that means for your house, the 720kWh floor, and why a home finished in 2028 can still legally have no panels.
Solar Panels in a Conservation Area: UK Rules (2026)Solar panels in a conservation area are usually permitted development in England if they go on the roof. The rules for all four UK nations, and when you need consent.
Solar Panels for Flats: UK Rules and Options (2026)Can you put solar panels on a flat? Often, but the roof decides it. Planning rules for flats in all four UK nations, freeholder consent and tenement rules.
Solar Panels on a Listed Building: UK Rules (2026)Yes, you can put solar panels on a listed building, with listed building consent. It is free, takes about 8 weeks, and some councils now pre-approve it.
Solar Panels and Home Insurance UK: What to Tell Your Insurer (2026)Solar panels you own are normally covered by buildings insurance as part of the structure. You have no legal duty to volunteer that you fitted them, but answering an insurer's question carelessly can cut your payout by law. Here is exactly how that works.
Plug-In Solar Panels UK: Rules, Prices and Savings (2026)Plug-in solar is legal in Great Britain since 27 August 2026. The 800W cap, the one-device rule, registration, kit prices and what you can really save.

Your Roof: Direction, Pitch and Type

Orientation and pitch decide how much a system generates before a single panel is chosen. Flat roofs, garages, in-roof mounting, roof tiles and ground mounts each change the cost and the rules.

Solar Roof Tiles UK: Costs, Rules and How They Compare to PanelsSolar roof tiles replace your roof covering instead of sitting on top of it. No official UK source publishes a typical price, and the certification question decides whether you get paid for exporting. Here is what is actually verifiable.
Ground-Mounted Solar Panels UK: Cost, Planning Rules and When They Beat a RoofGround-mounted solar panels can outperform a roof install if you have the space, but the permitted development allowance is small: 9 square metres in England and Wales, about four panels. What they cost, the planning rules in all four UK nations, and when a garden array makes sense.
Solar Panels on a Flat Roof: UK Rules, Mounting and Costs (2026)Yes, you can put solar panels on a flat roof, and the roof is rarely the problem. What decides the job is how the array is held down. MCS rewrote those rules in March 2026, and in England the 0.6 metre planning limit quietly sets your tilt angle. The full detail, with the arithmetic.
In-Roof Solar Panels UK: Costs, Rules and When They Are Worth It (2026)In-roof solar panels replace part of your roof covering instead of sitting on top of it. They look better, they cost more on an existing roof, and MCS tests them far harder than standard on-roof systems. What that means for your quote, verified against the current standards.
Solar Panels and a New Roof: Do You Need to Re-Roof First? (UK 2026)No UK standard says you need a new roof before solar panels. What MCS does require is a structural check, and the number that decides it is what your roof covering weighs. The arithmetic, the building regulations bill, and the VAT trap on doing both jobs at once.
Solar Panels on a Garage Roof UK: Rules, Limits and Costs (2026)Putting solar on a garage or carport is permitted development in all four UK nations, but the limits are different from your house roof and Scotland bans it outright in the front curtilage. The planning rules, the MCS clause that sends most garage roofs to a structural engineer, and what it costs.
Solar Panel Dimensions UK: How Big Is a Solar Panel? (2026)A standard UK residential solar panel is 1,762mm by 1,134mm by 30mm and weighs 20 to 21kg. What that means for your roof, the 400mm edge zone MCS asks installers to leave, the 200mm planning limit in England, and how to measure your own roof before anyone visits.
Which Direction Should Solar Panels Face? UK Roof Orientation GuideSouth is best, but east or west roofs still work and lose only around 15 to 20% against due south. What MCS actually measures, why north facing roofs are the one direction to rule out, and how to check your quote used your real roof orientation.
Best Angle for Solar Panels UK: What the MCS Tables Actually SayThe best angle for solar panels in the UK is 37 to 40 degrees from horizontal, facing south. But across the 30 to 45 degree band that covers almost every British roof, the MCS irradiance tables show a difference of under 2 per cent, worth about nine pounds a year. Here is where the angle does matter, read from the tables themselves.

Panels, Inverters and Batteries

How to read the hardware on a quote: panel type and efficiency, string versus hybrid versus microinverters, whether optimisers earn their price, and what a battery adds.

Sunsynk Inverters and Batteries UK: A Buyer's GuideSunsynk hybrid inverters and LiFePO4 batteries explained for UK homeowners: the model range, the 10-year battery warranty, and what to check on a quote.
Aiko Solar Panels UK: Price, Specs and the Warranty GapAiko Neostar panels on a UK quote: real 2026 trade prices, the 23.3% efficiency maths, and why the warranty PDF may not cover your model.
Fox ESS Battery Review UK: Warranty, Price and Grid RulesFox ESS batteries and inverters on a UK quote: what the warranty depends on, trade prices, grid rules and what to check before signing.
SolarEdge Inverters UK: Range, Warranty and Real CostsThe SolarEdge 12 year inverter warranty depends on the unit staying online, and the comms module inside it is a 5 year part. What to check on a UK quote.
Tesla Powerwall 3 UK: Price, Warranty and Grid RulesTesla's own UK price list, the 80% capacity warranty Britain gets when southern Europe gets 70%, and the G99 approval an 11.04kW Powerwall needs.
Solar Battery Storage UK: Costs, Savings and Payback (2026)UK home batteries cost £1,500 to £10,000; a 5kWh unit is around £4,600 per the Energy Saving Trust. The 0% VAT position and the honest payback maths.
Solar Inverters UK: String, Hybrid and Microinverters ComparedThe inverter decides how your solar system handles shade, whether a battery fits later, and which grid application your installer has to make. Here is how string, hybrid and microinverter setups differ on a UK roof, and the 16A rule that catches people out.
Enphase Microinverters UK: Price, Warranty, G98 LimitWhat Enphase IQ8 microinverters cost in the UK, the 25 year warranty that rests on a 5 year gateway, and the panel count that pushes you into G99.
SolaX Inverters and Batteries UK: Price and WarrantySolaX UK prices from £836 ex VAT, why the 10 year inverter warranty is really 5 unless you connect it, and the battery cycle cap that ends cover early.
Solis Inverters UK: Price, Warranty and G98 LimitsSolis hybrids from £624 ex VAT. Why UK buyers get 5 years when six European countries get 10 free, and the warranty extension you have to pay for.
Pylontech Batteries UK: Price, Warranty and the CatchPylontech's US5000 lists at £678 ex VAT, about £141 per kWh. The free 10-year warranty quietly drops the capacity floor from 70% to 60%.
Sigenergy SigenStor UK: Price and the 3,500-Cycle CapSigenergy claims 10,000 cycles. Its own warranty caps throughput at 3,500. UK prices from £3,107 ex VAT, and the 10-year cover halves if you go offline.
LONGi Solar Panels UK: Prices and the Warranty SplitLONGi panel prices from two UK sellers on 3 October 2026, and why the 30 year warranty is 30 years of output but 15 years of product.
Solar Panel Optimisers UK: Do You Actually Need Them? (2026)Optimisers cost around £58 a panel at UK trade list price, so roughly £700 of kit on a 12 panel roof. The Energy Saving Trust says they add nothing on an unshaded roof, and the MCS estimate on your quote gives them no credit at all. Here is when they are worth it.
Solar Panel Types UK: Monocrystalline, Polycrystalline and Thin FilmSolar panel types explained for UK homes: what monocrystalline, polycrystalline and thin film actually mean in the MCS product standard, why bifacial panels are rated on a different test, and which of these differences genuinely changes your quote.
Best Solar Panels UK 2026: How to Judge the Panel on Your QuoteThere is no official best solar panel in the UK, and MCS certification is a floor rather than a league table. Since 1 August 2026 a batch of panels has been running on a grace period certificate that expires on 1 February 2027. Here is how to check yours, and the four datasheet lines that actually separate one panel from another.
Solar Panel Efficiency UK: What the Percentage Actually ChangesSolar panel efficiency decides how much power fits in a square metre of roof, not how much electricity you get from a given system size. MCS certified panels run from about 19.5% to 24%. Here is what that gap is really worth on a UK roof.
Growatt Inverters and Batteries UK: Price and WarrantyLive UK Growatt prices, the 10 year battery warranty that drops to three without monitoring, and why the SPH 3600 is rated at exactly 3,680W.

Output, Lifespan and Maintenance

What a UK system generates by region and by season, how long the panels and the inverter last, and what looking after them actually costs.

Do Solar Panels Work in Winter? UK Output Season by SeasonYes, but a UK solar system produces roughly a quarter as much in the winter quarters as in the summer ones. Government load factor data, Met Office sunshine hours and what the seasonal swing means for your bills, battery and export payments.
How Do Solar Panels Work? A UK Homeowner's GuideSunlight hits silicon, the cells make direct current, an inverter turns it into the alternating current your house runs on. Here is the full chain, what kWp really means, and why UK panels shut down in a power cut.
How Long Do Solar Panels Last? Lifespan, Degradation and the InverterThe Energy Saving Trust says UK solar panels should last 25 years or more, but the inverter needs replacing after around 12 years. Here is what fails first, what your warranty actually covers by then, and what it costs you.
Solar Panel Maintenance UK: The Real Schedule and What It Costs (2026)MCS publishes an actual maintenance schedule for UK solar panels, and for a privately owned home it asks for far less than the servicing plans being sold to you. The frequencies from Appendix F, the Energy Saving Trust's cleaning costs, and the warranty clause that catches people out.
Solar Panel Recycling UK: What Happens to Old Panels (2026)Solar panels have a legal recycling route in the UK under the WEEE Regulations 2013. Producers pay, homeowners drop off free. Here is how it works and when it applies to you.
Solar Panel Fire Risk UK: What the Data Actually Shows (2026)UK fire services attended 212 fires involving solar panels in 2025, up from 91 in 2022. Set against 1.93 million installations, that is roughly 1 in 9,100 a year. Here is the real rate, the components that fail, and what to check on your quote.
Bird Proofing Solar Panels UK: Costs, and When It Is Illegal to Fit (2026)Bird proofing a domestic solar array costs roughly £300 to £900 fitted. The part nobody mentions: if birds are already nesting under your panels, fitting mesh is a criminal offence until the chicks have flown. Costs, the law in all four nations, and the warranty clause that rules out drilling.
How Much Electricity Do Solar Panels Produce? UK Output by RegionA 4.5kWp solar system produces about 3,750 to 5,085 kWh a year in mainland Britain, depending entirely on where you live. The MCS irradiance tables publish the figure for all 25 postcode zones. Here is what each one produces, month by month, and what it is worth at the October 2026 price cap.

Choosing an Installer and Getting Installed

MCS certification is the one non-negotiable, RECC and HIES protect your money, and the install itself is shorter than most people expect.

Best Solar Panel Installers UK: How to Find a Good OneHow to find the best solar panel installers near you: the MCS and RECC checks, red flags, fair price benchmarks and installers by area.
Solar Panel Installation Process UK: How Long Does It Take?The panels go on in one to two days, but the process runs from survey to switch-on. What happens on installation day, when the scaffolding arrives, the MCS certificate you should get within 10 working days, the grid notification, and when export payments actually start.

Heat Pump Costs and Grants

What an air source heat pump costs to install in the UK, how much the Boiler Upgrade Scheme takes off in England and Wales, and how the running costs compare with the gas boiler it replaces.

Heat Pump Cost UK (2026): What You Pay After the GrantAn air source heat pump costs around £12,000 to install. The Boiler Upgrade Scheme takes £7,500 off in England and Wales, or £9,000 off the gas grid.
Heat Pump vs Gas Boiler: UK Costs Side by SideOn the October to December 2026 price cap, a heat pump matches a 90% gas boiler at a seasonal efficiency of 2.97. The sum, the grant and the break-even.

Heat Pump Brands and Models

How to read the equipment on a heat pump quote: what Vaillant, Daikin, Samsung, Mitsubishi and the other main manufacturers sell in the UK, their published efficiency figures, and what the warranties cover.

Vaillant Heat Pumps UK: aroTHERM Plus Prices and SpecsVaillant aroTHERM plus prices from UK merchants on 6 October 2026, the three warranty tiers, and the sound power figure planning really uses.
Daikin Heat Pumps UK: Altherma Prices and Noise LimitsDaikin Altherma prices at UK merchants on 7 October 2026, the sound power figures English planning really uses, and why the 2027 R32 date is an EU rule.
Ideal Heat Pumps UK: Logic Air Prices and SpecsIdeal Logic Air prices at UK merchants on 13 October 2026, the SCOP that falls at 55C, and what Ideal's up to 7 year warranty actually depends on.
Samsung Heat Pumps UK: EHS R290 Prices and Noise LimitsSamsung EHS Mono R290 prices at UK merchants on 8 October 2026, the sound power figures MCS 020 a) actually uses, and why 35 dB(A) cannot go in it.
Mitsubishi Ecodan UK: Prices, Noise and WarrantyEcodan R290 prices at UK merchants on 9 October 2026, the sound power figures MCS 020 a) actually uses, and why your installer sets your warranty.
Midea Heat Pumps UK: M Thermal Prices and SpecsMidea M Thermal prices at UK merchants, what the up to 10 year warranty depends on, and how the H-Pack hybrid option affects the £7,500 grant.
Viessmann Heat Pumps UK: Vitocal Prices and WarrantyVitocal prices at a UK merchant, why standard Viessmann heat pump cover is 2 years, and what the 7 year extension costs. Grant figures from gov.uk.
Stiebel Eltron Heat Pumps UK: Warranty and Service CostsStiebel Eltron gives 2 years cover as standard and 7 only if conditions are met. Service plan prices, HPA-O Trend specs and the £7,500 grant.
Panasonic Heat Pumps UK: Warranty Tiers and Aquarea SpecsPanasonic's UK warranty runs 3, 5 or 7 years and your installer decides which. Aquarea L and K series specs, plus the £7,500 grant rules.

Is Your Home Ready for a Heat Pump?

Sizing, radiators, underfloor heating, noise limits and planning rules: what decides whether a heat pump suits your home before any unit is chosen.

Do You Need New Radiators for a Heat Pump? (UK)Some of them, usually. MCS's own sizing table shows how much bigger a radiator has to be at 45°C, and why one cold room sets the whole house.
Heat Pump Sizing: What kW Does Your Home Need?A heat pump is sized to your home's calculated heat load, not your old boiler. What MCS requires, the kW sizes UK brands build, and what size costs.
How Loud Is a Heat Pump? The UK Noise RulesEngland caps a permitted development heat pump at 37.0 dB(A) at a neighbour's window. What MCS 020 a) measures, and how the four nations differ.
Heat Pump Planning Permission: UK Rules by NationMost UK heat pumps are permitted development. The limits that take yours out of it, what an application costs, and how the four nations differ.

Solar Panels by Area

Local sunshine, electricity prices, network operators, planning rules and council schemes for the parts of the UK we cover.

Solar Panels Cornwall: Costs, Grants and Local Rules (2026)Solar panels in Cornwall: the most solar of any UK council area, local yield, Warm Homes grant and loan options, and planning in the National Landscape.
Solar Panels Essex: Costs, Grants and Local Rules (2026)Solar panels in Essex: one of the sunniest areas on PVGIS, the Eastern England price cap rate, the HEAT Essex grant and which districts lead.
Solar Panels Kent: Costs, Grants and Local Rules (2026)Solar panels in Kent: local yield, the South Eastern price cap rate, Warm Homes grant delivery, and National Landscape rules across a third of the county.
Solar Panels London: Costs, Grants and Local Rules (2026)Solar panels in London: local yield, the 26.60p London price cap rate, the Warm Homes grant run by 31 boroughs, flats and conservation area rules.
Solar Panels by Area: UK Yields, Prices and Rules (2026)How much solar panels generate and save across the UK: local yields, regional electricity prices, network operators and planning rules by area.
Solar Panels Bristol: Costs, Grants and Local Rules (2026)Solar panels in Bristol: local yield, the South West price cap rate, the Clifton listed building solar order, conservation areas and free advice.
Solar Panels Nottingham: Costs, Grants and Rules (2026)Solar panels in Nottingham: local yield, the East Midlands price cap rate, the Warm Homes grant waiting list, and Article 4 conservation areas.
Solar Panels Sheffield: Costs, Grants and Rules (2026)Solar panels in Sheffield: local yield, the Yorkshire price cap rate, the £3.4m Warm Homes grant, and Nether Edge and Broomhill planning rules.
Solar Panels Edinburgh: Costs, Rules and Funding (2026)Solar panels in Edinburgh: local yield, why the Old and New Towns need planning permission, 50 conservation areas, and what Scotland funds.
Solar Panels Glasgow: Costs, Funding and Local Rules (2026)Solar panels in Glasgow: local yield, the Southern Scotland price cap rate, Scottish planning rules for flats, conservation areas and what HES funds.
Solar Panels Manchester: Costs, Grants and Rules (2026)Solar panels in Manchester: local yield, the North West price cap rate, the Greater Manchester Warm Homes grant, terraced roofs and HELP loans.
Solar Panels Birmingham: Costs, Grants and Rules (2026)Solar panels in Birmingham: local yield, the West Midlands price cap rate, the grant for six priority areas, Article 4 areas and NGED.
Solar Panels Dorset: Costs, Rules and Grants (2026)Solar panels in Dorset: one of the sunniest areas we cover, the Southern England price cap rate, National Landscape and Jurassic Coast rules, and grants.
Solar Panels Hampshire: Costs, Rules and Grants (2026)Solar panels in Hampshire: local yield, the Southern England price cap rate, the New Forest and South Downs rules, the Warmer Homes grant and SSEN.
Solar Panels Leeds: Costs, Grants and Rules (2026)Solar panels in Leeds: local yield, the Yorkshire price cap rate, which grants and loans are open, 80 conservation areas and Northern Powergrid.
Solar Panels Norfolk and Norwich: Costs and Grants (2026)Solar panels in Norfolk and Norwich: local yield, the Eastern England price cap rate, open grants, oil-heated homes, the Broads and Norwich rules.
Solar Panels Cambridge: Costs, Grants and Rules 2026Solar panels in Cambridge: one of the UK's most solar dense areas, a fully allocated Warm Homes grant, 18 conservation areas and UK Power Networks.
Solar Panels Cardiff: Costs, Grants and Rules (2026)Solar panels in Cardiff: local yield, the Southern Wales price cap rate, Nest and Green Homes Wales funding, Welsh planning rules and NGED.
Solar Panels Leicester: Costs, Grants and Rules 2026Solar panels in Leicester: the cheapest price cap rate in Great Britain, a closed Warm Homes grant, 25 conservation areas and NGED's G98 rules.
Solar Panels Liverpool: Costs, Grants and Rules 2026Solar panels in Liverpool: the highest price cap rate in Great Britain, the Warm Homes grant waiting list, 36 conservation areas and SP Energy Networks.
Solar Panels York: Costs, Grants and Rules (2026)Solar panels in York: 35 conservation areas that mostly allow roof panels, an open Warm Homes grant, local yield and Northern Powergrid's G98 rules.

Start here

New guides publish regularly, starting with the full UK solar panel cost guide. While you are here, the essentials live on the homepage: what solar panels cost in the UK, how our free quote service works and the most common solar questions answered. When you are ready to get real prices for your own roof, request a quote from MCS-certified installers. The form takes about a minute and there is no obligation.