Cheapest Solar Panels UK (2026): Lowest Prices Without the Regret
Solar is cheaper to buy than it has ever been, but the cheapest quote is often not the cheapest system over 25 years. This guide ranks the genuinely cheap ways to get solar in 2026: council group buying, the best-value panel brands, energy-supplier deals, plug-in kits, second-hand panels and grants. It shows where the money in a quote actually goes and which “cheap” deals to walk away from.
Get a keen, fixed price from one vetted installer
We match you with one MCS-certified installer near you. They survey your roof and give you a fixed, itemised price with named value Tier 1 panels and a ten-year workmanship guarantee, the cheapest way to do it properly. It’s free, with no obligation.
Get My Free Solar Price →★★★★★ Trusted by UK homeowners
The cheapest ways to get solar panels, ranked
These are the realistic routes for a UK home in 2026, from cheapest upfront to most expensive, with the catch for each. Prices are installed with 0% VAT unless stated.
| Route | Typical price | Best for | The catch |
|---|---|---|---|
| 1. Grant-funded (Warm Homes: Local Grant, ECO4) | £0 | Low-income households in EPC D–G homes | Strict eligibility, many councils oversubscribed, ECO4 work must finish by 31 Dec 2026 |
| 2. Council group buying (Solar Together, Switch Together) | Typically 15–30% below market | Anyone in a participating council area | Runs in rounds, installs in batches, no choice of installer |
| 3. Supplier deals (e.g. E.ON) | E.ON: £6,495 for 12 Aiko panels (5.82kW), about £1,115/kW | Larger roofs, customers of that supplier | Two-year workmanship guarantees, limited choice |
| 4. A sharp local MCS installer | 4kW: £5,500–£7,500 (£1,300–£1,800/kW) | Most homes, including awkward roofs | Quality varies, so vet them properly |
| 5. Online fixed-price installers (e.g. BOXT) | From £3,999 for a small system | Simple pitched roofs | Small systems are pricey per kW, and workmanship cover is short |
| 6. Plug-in kit | £350–£450 for ~800W | Flats, renters, small budgets | Saves ~£120/yr, no export payments |
Two rules make any route cheaper. First, go bigger if the roof allows: scaffolding, labour and the inverter are largely fixed costs, so a 6kW system costs far less per kW than a 3kW one. Second, get two prices, a group-buying offer if one is open and one local MCS quote, because the same system can vary by £2,000 between installers. Full averages are in solar panel cost UK, and supplier deals are compared in solar panel companies UK. To size the system, see how many panels you need.
Cheapest solar panel brands that are still good
The good news is that the cheapest reliable panels in the UK come from the biggest manufacturers in the world. Their scale is what makes them cheap. These are “Tier 1” (bankable) brands with 25–30 year warranties and independent reliability testing:
| Value brand | Typical residential panel | Efficiency | Warranty (product / power) | Trade price per panel* |
|---|---|---|---|---|
| Trina Solar | Vertex S+ (dual glass) | 22.5–23.8% | 25 (check) / 30 yrs | £70–£120 |
| JA Solar | DeepBlue 4.0 Pro | ~22.7% | 25 / 30 yrs | £70–£120 |
| Jinko | Tiger Neo | ~22.5% | 25 / 30 yrs | £70–£120 |
| LONGi | Hi-MO range | Up to ~24% | Varies by range | £80–£140 |
*Approximate UK trade prices before VAT for a ~430–475W panel. Prices vary with stock and wattage, and you don’t pay these directly on an installed system. Other value names you’ll see on quotes include DMEGC and Perlight. Premium panels like Aiko or REC cost more and earn it on small or shaded roofs, because they get more out of every square metre. On a normal roof with space to spare, one extra value panel matches the output for less. Rankings: best solar panels UK and most efficient panels.
Want value Tier 1 panels at a sharp price?
Tell us your budget. A vetted local installer will spec named value panels, price it line by line and show you what it’ll generate, with no upsell to kit you don’t need.
Get My Free Solar Price →Cheap vs expensive: where the money actually goes
This is the single most useful thing to understand before hunting for the cheapest deal. Here’s what’s inside a typical quote for a 4kW, 10-panel system, using the same figures as our cost breakdown:
| Part of a typical 4kW quote | Typical cost | Share | Can you safely cut it? |
|---|---|---|---|
| Panels (10 × 430–450W) | £1,500–£3,000 | 25–35% | Partly. Value Tier 1 instead of premium saves £400–£1,000, and there’s no need to go cheaper than that |
| Inverter | £800–£1,500 | 12–18% | Choose a reputable brand, not the cheapest |
| Mounting, roof hooks, cabling, isolators | £500–£1,000 | 8–13% | No, because cheap fixings leak and corrode |
| Scaffolding | £600–£1,200 | 10–15% | Only by combining it with other roof work |
| Labour, MCS, DNO and Part P paperwork | £1,150–£2,200 | 18–30% | No, this is where cowboys cut corners |
| Installer margin | £800–£2,000 | 10–25% | Yes, through group buying, competition and a bigger system |
Notice the gap between what panels cost an installer (£70–£120 each at trade) and what they’re charged at in a quote. Part of that is margin, which is why competition and group buying work. But a quote that’s £1,500 cheaper than the others usually hasn’t saved it on panels. It’s saved it on labour, fixings, scaffolding or aftercare, which are exactly the things that cause leaks and failures later. The genuinely cheap routes cut margin, not workmanship.
Cheap Chinese solar panels: safe or not?
Almost every affordable panel sold in the UK is made in China or by Chinese-owned factories in South-East Asia, including the brands above. That isn’t the risk. The difference is between Tier 1 Chinese brands (Trina, JA, Jinko, LONGi and others), which are independently tested, MCS-listed and backed by huge companies, and unbranded or white-label panels sold online with no datasheet, no UK warranty contact and often inflated wattage claims. Some cheap panels are rated at “400W” but deliver far less, which is where searches like “cheap solar panels false output” come from. The simple rule: if a panel isn’t on the MCS product list with a named manufacturer and a downloadable datasheet, don’t put it on your roof. See types of solar panels and solar panel warranties.
Where to buy cheap solar panels
- Through an installer (most homes). You get 0% VAT on the whole installed system, an MCS certificate for export payments, and a workmanship guarantee. The installer buys at trade prices you can’t get.
- Council group buying. This is the cheapest installed route when a round is open. See examples in our Essex and Kent guides.
- Online and wholesale, supply only (Amazon, eBay, solar wholesalers). The panels are cheap, but you pay 20% VAT because 0% only applies when they’re installed. You then need an inverter, mounting, scaffolding and an electrician. Without an MCS installer there are no Smart Export Guarantee payments, and the electrical work still has to meet Part P and be notified to your network operator. It only makes sense for sheds, garages and off-grid use.
- “Cheap solar panels near me”. Search for MCS-certified installers, not the cheapest advert. Solar panel installers near me explains how to vet them.
Plug-in and DIY: the cheapest solar of all
Plug-in (balcony) solar became legal in Great Britain on 27 August 2026. Approved kits of up to 800W can now be plugged into a normal socket with no installer. By mid-September 2026, 48 kits from 13 manufacturers were approved, around 15 of them on sale, with entry-level kits at roughly £350–£450. An 800W south-facing kit makes around 600–700kWh a year, worth about £120 at today’s prices, so it pays back in three to four years. It’s the cheapest solar you can buy and ideal for flats and renters. It doesn’t qualify for export payments, and it’s no substitute for a roof system if you own a house. Only buy a kit listed on the ENA G98 type-test register. See plug-in solar UK and balcony solar.
DIY roof systems look cheap on paper, but by the time you add 20% VAT, scaffolding, an electrician for the notifiable work and DNO notification, the saving over a group-buying or keen local quote is small. You also lose export payments, the workmanship guarantee and sometimes your home insurance cover. It’s not worth it for most people.
Own your house? A proper roof system beats a plug-in kit
A plug-in kit saves about £120 a year, while a 4kW roof system saves £700–£1,000. Get one free, itemised price from a vetted MCS installer and see the difference for your roof.
Get My Free Solar Price →Second-hand and used solar panels
Used panels, often from early-2010s systems being upgraded, sell for £20–£60 each on eBay and Facebook Marketplace. They’re fine for a shed, workshop, stable or off-grid project. They’re a poor choice for a home roof: they’re older, lower-wattage and out of warranty, and an MCS installer usually won’t fit second-hand panels, so there’s no export income. If you buy used, test each panel’s output, check for cracked glass, discoloured cells and burnt junction boxes, and budget for new cables and connectors (cables and connectors).
Cheap small, portable and 12V panels
For a shed, caravan, boat, allotment or camping, cheap small panels make sense and don’t need an installer. Typical 2026 prices are about £60–£100 for a rigid 100W panel, £80–£200 for a foldable portable 100W panel, and a bit more for flexible panels. Pair them with an MPPT charge controller rather than the cheapest PWM type. Guides: 12V solar panels, 100W, 200W, small solar panels and flexible panels.
Cheap solar panels with a battery
A battery adds £3,000–£5,500 to a system, and it’s where “cheap” deals most often go wrong. Adding it at the same time as the panels saves a second visit and shares the inverter. For value, look at well-supported mainstream brands such as Fox ESS, SolaX or Sunsynk, rather than the cheapest unknown name. GivEnergy‘s administration in April 2026 left owners without manufacturer warranty support, which shows why the maker’s stability matters. You don’t have to buy the battery on day one: a hybrid inverter lets you add one later. See best solar batteries, battery packages and are batteries worth it.
Free, subsidised and cheap finance
- Warm Homes: Local Grant. This can fully fund solar for households with an income of £36,000 or less or a means-tested benefit, in homes rated EPC D–G. Many councils are oversubscribed, so apply early.
- ECO4. This is closing, and all work must be finished by 31 December 2026 (ECO4 solar).
- 0% VAT. This applies to installed residential solar and batteries until 31 March 2027, then rises to 5% (VAT on solar).
- Cheap borrowing. There are 0% finance offers from some installers and suppliers, and Nationwide’s 0% Green Additional Borrowing (£5,000–£20,000 over two or five years for existing mortgage customers). Avoid 10–15 year loans at 9.9% APR or more, which can nearly double the price (solar finance compared).
Full detail: free solar panels, who actually qualifies and solar grants UK.
How cheap will solar panels get? Should you wait?
Panel prices fell by more than half between 2023 and 2025 as Chinese factories overproduced. In 2026 the trend turned. China scrapped its export tax rebate on solar panels from 1 April 2026, prompting panic buying and a price spike in Europe early in the year. By mid-2026, wholesale TOPCon panels in Europe were back at around €0.11 per watt and easing slightly. The bigger point is that panels are now so cheap that labour, scaffolding and the inverter make up most of an installed price, and those don’t fall. Meanwhile VAT rises from 0% to 5% on 1 April 2027, adding about £300 to a £6,500 system, and every month you wait is a month of savings lost (roughly £60–£80 on a typical system). For most homes, waiting costs more than it saves. See should you buy now or wait.
Cheap-quote traps to avoid
Signs of a good cheap deal
- MCS-certified installer, checked on the register
- Named value Tier 1 panels and a named inverter, with datasheets
- Itemised price including scaffolding and bird protection
- Ten-year, ideally insurance-backed, workmanship guarantee
- HIES or RECC membership and deposit protection
- A shade analysis and a realistic output figure
Signs of a cheap deal to walk away from
- “Tier 1 equivalent” or unbranded panels
- “Today only” discounts or pressure to sign on the day
- Big deposits paid by bank transfer
- No MCS certificate, so no export payments
- “Free solar panels” offers from cold callers
- Two-year workmanship cover with no aftercare plan
After this year’s collapses at GivEnergy and Effective Home, pay any deposit by credit card for Section 75 protection. More: solar panel scams, how to choose an installer and MCS certification.
The bottom line on the cheapest solar panels in the UK
The cheapest good solar in 2026 is a council group-buying offer or a sharp local MCS quote, using value Tier 1 panels from Trina, JA or Jinko, sized as big as your roof and budget allow. That typically means £1,100–£1,500 per kW installed, well under £6,500 for a 4kW system, with 0% VAT until March 2027.
Don’t chase the cheapest panel, because value Tier 1 panels are already cheap and good. Chase the cheapest well-installed system. If you rent or live in a flat, a plug-in kit from about £350 is the cheapest solar you can buy. If you’re on a low income, check the Warm Homes: Local Grant before paying anything.
One vetted installer, one keen fixed price, free
MCS-certified, HIES/RECC member, insured and reviewed before they can quote through us. You get named value Tier 1 panels, an itemised price and a ten-year workmanship guarantee, with no obligation. We’re paid by the installer if you go ahead, never by you.
Get My Free Solar Price →★★★★★ Trusted by UK homeowners
Cheap solar panels UK: frequently asked questions
What is the cheapest way to get solar panels in the UK?
If you’re on a low income in an EPC D–G home, the Warm Homes: Local Grant can make solar free. Otherwise, the cheapest route for a home system is a council group-buying scheme such as Solar Together or Switch Together, which typically comes in 15–30% below open-market prices, followed by a competitive quote from a local MCS installer. A 4kW system typically costs £5,500–£7,500 installed with 0% VAT, less through group buying. The cheapest solar of all is an approved plug-in kit from about £350.
Are cheap solar panels any good?
Cheap panels from value Tier 1 manufacturers such as Trina, JA Solar and Jinko are very good, with modern N-type cells, around 22–24% efficiency, 25–30 year warranties and independent reliability testing. The panels to avoid are unbranded or “Tier 1 equivalent” panels with no datasheet, no MCS listing and no UK warranty contact. Switching from premium to value panels saves only £400–£1,000 on a typical system, so the bigger risk in a cheap quote is cut-price installation.
Where can I buy cheap solar panels in the UK?
For a home roof, buy through an MCS-certified installer or a council group-buying scheme, which gets you trade prices, 0% VAT on the installed system and an MCS certificate for export payments. Panels bought on their own from Amazon, eBay or wholesalers carry 20% VAT and won’t qualify for Smart Export Guarantee payments unless an MCS installer fits them, so supply-only panels make sense mainly for sheds, caravans and off-grid use.
Are cheap Chinese solar panels safe?
Most affordable panels sold in the UK, including the best value Tier 1 brands such as Trina, JA Solar, Jinko and LONGi, are made in China or by Chinese-owned factories and are safe, well tested and warrantied. The risk is unbranded or white-label panels sold online, which may overstate their wattage and have no UK warranty support. Only fit panels from a named manufacturer on the MCS product list with a downloadable datasheet.
How cheap is a plug-in solar kit?
Since plug-in solar became legal in Great Britain on 27 August 2026, approved kits of up to 800W have gone on sale from roughly £350–£450 for entry-level models. An 800W south-facing kit generates around 600–700kWh a year, saving roughly £120, so it pays back in three to four years. Only buy a kit listed on the ENA G98 type-test register. Plug-in solar doesn’t qualify for export payments.
Will solar panels get cheaper if I wait?
Probably not by much. Panel prices fell sharply between 2023 and 2025, rose briefly after China scrapped its export tax rebate in April 2026, and were around €0.11 per watt wholesale in Europe by mid-2026. Panels are now a small part of an installed system’s cost, and labour and scaffolding don’t fall, while VAT on residential solar rises from 0% to 5% on 1 April 2027. For most homes, waiting costs more in lost savings than it could save on price.
Prices are typical 2026 UK figures for guidance only and vary by installer, region, roof and specification. Trade panel prices are approximate and exclude VAT. Supplier prices are as published by the suppliers and in our separate reviews, and change often. Group-buying savings vary by round and area. Plug-in kit numbers and prices are as reported in September 2026. Wholesale module prices are as reported by pv magazine in July 2026. Savings assume ~25p/kWh import. 0% VAT on installed residential solar and batteries applies until 31 March 2027 per HMRC, and supply-only panels are standard-rated. Always get quotes from MCS-certified installers.