Solar panels in the UK are still scraping the bottom of the price curve. In our 1 July 2026 SolarSell crawl, mainstream N-Type panels were listed from £56.98 ex VAT for a 450W Canadian Solar module to £78.55 ex VAT for a 610W JA Solar bifacial panel. That is roughly 12.6p to 14p per watt before VAT.
My read: the price rise has not shown up in UK retail listings yet. The cheap stock is still cheap, especially Canadian Solar, JA Solar and LONGi. The risk is not today’s panel price, it is what happens when UK wholesalers work through pre-rebate stock and reorder at the new Chinese export economics. Three months into the new regime, the crawl still shows the opposite: four tracked prices fell on 1 July and none rose.
For full specifications and datasheet downloads, see our UK solar panel directory with 81 panels from 12 data sources. The newest seven SolarSell entries are price-first records, so I have marked their electrical specs as unverified until datasheets are checked.
This guide covers what a single panel costs, what a full system costs installed or DIY, where to buy, and what to watch through the rest of 2026.
What Do Solar Panels Cost in the UK Right Now?
A mainstream 450W solar panel costs £57-72 ex VAT from UK trade suppliers in July 2026, and the big 605-610W bifacial panels cost £76-79. That is 12.6p to 14p per watt before VAT. Retail buyers pay 20% VAT on top, and premium UK-made panels cost roughly three times more per watt.
The metric that matters is price per watt (£/W). It lets you compare panels of different sizes on a level playing field. A 450W panel at £61 works out to £0.135/W. A 445W panel at £64 is £0.144/W. The first is better value per watt of generating capacity.
| Panel | Power | Price | £/W | Cell Type |
|---|---|---|---|---|
| Canadian Solar HiKU6 450W | 450W | £56.98 ex VAT | £0.127 | N-Type TOPCon |
| JA Solar 455W Bifacial | 455W | £63.20 ex VAT | £0.139 | N-Type TOPCon |
| LONGi Hi-MO X10 490W | 490W | £67.69 ex VAT | £0.138 | HPBC |
| LONGi Hi-MO X6 Max 515W | 515W | £72.30 ex VAT | £0.140 | HPBC |
| JA Solar 530W Bifacial | 530W | £69.36 ex VAT | £0.131 | N-Type TOPCon |
| JA Solar 605W Bifacial | 605W | £76.16 ex VAT | £0.126 | N-Type TOPCon |
| JA Solar 610W Bifacial | 610W | £78.55 ex VAT | £0.129 | N-Type TOPCon |
| Viridian 445W (UK-made) | 445W | £221 inc VAT | £0.496 | N-Type TOPCon |
The sweet spot for mainstream imported panels is now roughly £0.13/W ex VAT, and the 605-610W bifacials have dipped just below it. At that price, panels are the cheapest part of a solar system: the inverter, the mounting hardware, and (if you use one) the installer each cost more than the panels themselves.
The outlier in the table is Viridian at £0.50/W. Viridian panels are manufactured in the UK and positioned as a premium product. They are a good choice if you want to support UK manufacturing or need a specific aesthetic (integrated roof panels), but they are roughly 3x the price per watt of equivalent Chinese-made panels.
How Much Does a Full Solar System Cost?
A 4kW solar system costs £6,000-8,000 fully installed in 2026, or about £1,450-1,750 in DIY hardware including VAT. The official median across a record 265,682 MCS installations in 2025/26 was £1,780 per kW: £7,100 for a 4kW system, and the lowest real-terms level DESNZ has recorded.
| System | Panels | DIY hardware (inc VAT) | Installed | Payback (installed) |
|---|---|---|---|---|
| 3kW | 7× 450W | £1,200-1,500 | £4,500-6,000 | ~13.2 years |
| 4kW | 9× 450W | £1,450-1,750 | £6,000-8,000 | ~12.7 years |
| 5kW | 11× 450W | £1,800-2,100 | £7,000-9,000 | ~13 years |
| 6kW | 13× 450W | £2,100-2,500 | £8,500-10,500 | ~13.6 years |
Panels are only part of the cost. Here is where the money actually goes on a typical 4kW system:
| Component | DIY Cost | Installed Cost |
|---|---|---|
| Panels (9× 450W) | £650 | £540 |
| Hybrid inverter | £500–800 | £500–800 |
| Roof mounting | £200 | £200 |
| Cable, connectors, isolators | £100 | £100 |
| Installation labour | n/a | £1,500–2,500 |
| MCS certification + DNO | n/a | £500–800 |
| Total | £1,450–1,750 | £3,400–4,900 |
Notice the component sum stops at £3,400-4,900 while real quotes mostly land at £6,000-8,000, with the DESNZ 2025/26 median at £7,100 for 4kW. The gap is business overhead, scaffolding, and margin. Knowing it exists is negotiating power: a quote near £5,000 is genuinely sharp, and £8,000-plus deserves a second opinion.
UK Solar Installation Costs: 2013/14–2025/26
Annual median installed cost per kW for 0–4 kW residential systems
Source: DESNZ Solar PV Cost Data (MCS-certified installations). Includes panels, inverter, mounting, labour, and certification. Costs are nominal (not inflation-adjusted). The 2022–2024 spike reflects the energy crisis driving record demand; underlying panel costs were falling throughout. Costs then fell for two consecutive years; the 2025/26 figure covers a record 265,682 MCS installations and is the lowest on record once adjusted for inflation (release of 28 May 2026).
The VAT catch: 0% installed, 20% DIY
An MCS installer’s quote is zero-rated: the whole supply-and-install package carries 0% VAT until 31 March 2027, then reverts to 5%. Buy the same panels yourself and you pay 20% at the checkout, because the relief only applies when one company supplies and fits.
The DIY route still wins on total cost by miles. Just remember that trade listings, including the ex VAT prices in this article’s tables, need a fifth added when you budget as a retail buyer.
Adding battery storage (e.g. 10–16 kWh) adds £2,000–4,000 to either route. A full solar-plus-battery system installed by an MCS company typically costs £7,000–10,000. DIY with battery: £3,500–5,500.
How Long Until a Solar System Pays For Itself?
About 12.7 years for a typical 4kW system at £7,000: roughly £465 a year in avoided grid electricity plus £86 in export income at a conservative 5p SEG rate. Smaller and larger systems land in the same 12-14 year window, because cost and generation scale together.
Self-consumption decides your result. Use half your solar electricity at home and those numbers hold; an empty house from 9 to 5 pushes payback out by years. One DIY caveat: you need MCS (or equivalent) certification to claim SEG export payments, which is a big part of what the installed premium buys. The full working, battery cases included, is in whether solar panels are worth it in 2026.
Where to Buy Solar Panels in the UK
There are two routes: trade/wholesale suppliers (cheaper per panel, often minimum orders of 3–5) and retail (single panels, slightly higher price). Here are the main options:
| Supplier | Type | Min Order | Notes |
|---|---|---|---|
| City Plumbing | Trade counter | 1 panel | Collection available from local branches. Competitive on DMEGC. |
| ITS Technologies | Online | 3–5 panels | Good JA Solar and Trina range. Fast delivery. |
| Midsummer Wholesale | Trade only | Varies | Login required. Jinko, LONGi, Canadian Solar. |
| Bimble Solar | Online retail | 1 panel | Good for small orders. Used/clearance panels available. |
| Solar Trade Sales | Trade | Varies | Wide range, competitive on volume. |
| Alternergy | Online retail | 1 panel | DIY-friendly. Also sells mounting and cable. |
If you are buying for a DIY install, City Plumbing and Bimble Solar are the most accessible. For a larger system or trade pricing, ITS Technologies and Midsummer offer better per-panel rates but require minimum orders.
Why Have Prices Dropped So Much?
Three factors drove the 25–35% price drop between 2024 and early 2026:
- Chinese manufacturing overcapacity. China produces roughly 80% of the world’s solar panels. A massive buildout of factory capacity in 2023–2024 created a supply glut. Manufacturers cut prices to maintain market share, and the savings filtered through to UK retail.
- N-Type technology matured. The industry shifted from older PERC cells to N-Type TOPCon, which is now mass-produced at scale. Higher efficiency at lower manufacturing cost per watt.
- 0% VAT on installations since April 2022. Residential supply-and-install packages carry 0% VAT until 31 March 2027, and standalone battery installations joined the scheme in February 2024. It makes installed quotes cheaper. It does not make DIY hardware cheaper: buy panels without the install and you pay the standard 20%.
What Is Changing in 2026?
Two forces were supposed to push prices back up this year. Here is where they actually stand:
1. China’s export rebate removal (1 April 2026). China scrapped its 9% VAT rebate for solar panel exporters on 1 April 2026, raising the factory-gate cost of every Chinese-made panel. Three months on, none of it has reached UK price lists. Our biweekly crawl has not recorded a single panel getting dearer since the change: on 1 July four panels got cheaper, and LONGi’s 490W Hi-MO X10 fell 14% in a fortnight.
The reasons are mundane. Wholesalers are still selling pre-rebate stock, and Chinese overcapacity still outweighs a 9% cost change. In March I expected an 8-15% retail rise by late 2026. That forecast is looking too aggressive, and I will update this page when the floor actually moves.
2. Battery prices follow. The rebate removal also affects battery cells (lithium iron phosphate, used in home batteries like the Fogstar and plug-in solar battery add-ons like the Zendure SolarFlow). Battery prices will follow the same trajectory, with a 3–6 month lag behind panels. For plug-in solar specifically, our kit builder itemises a complete system at current UK prices (a full 800W kit runs about £400-500 as hardware).
The 0% VAT on installed solar is scheduled until 31 March 2027, then reverts to 5% rather than the old 20%. If the rebate effect finally lands and the VAT relief lapses on schedule, installed prices in mid-2027 could sit 10-15% above today’s. Neither is certain: the same logic said panels would already cost more.
When Should You Buy?
If you are planning a solar system for 2026, the numbers are on your side. Panel prices are at record lows, the official installed median fell 9% in real terms last year, and the post-rebate price rise keeps failing to arrive. In March I called this window the cheapest of the year. Four months later it is still open.
That said, do not rush into a purchase just because prices might rise 10%. The difference on a 4kW system is roughly £60–80 on panels. It matters, but it is not worth making a bad decision over. Get the right panels for your roof, the right inverter for your usage, and buy when you are ready.
If you are waiting for plug-in solar kits, they are still not legal to run from a UK socket: the consultation closed on 30 June 2026, a government response is expected around 22 July, and the product standard that will certify kits for UK sale has no published date. Whenever kits do reach UK shelves, they will carry post-rebate pricing, so do not budget from today’s euro prices on German websites.
What to Look for When Buying
At today’s prices, the differences between mainstream panels are small. Here is what actually matters:
- N-Type over PERC. If a panel is still using older PERC cells, it is last-generation technology at this point. N-Type TOPCon is the standard. You should not pay more than £0.12/W for a PERC panel in 2026.
- Physical size matters. Two 445W panels from different brands can have different physical dimensions. Check that the panels fit your available roof space. Our panel directory lists dimensions for every model.
- Voc for string sizing. If you are connecting panels in series to a string inverter, the open circuit voltage (Voc) of each panel determines how many you can chain together. Higher Voc = fewer panels per string. This matters for overpanelling and inverter compatibility.
- Warranty length. Most mainstream panels now offer 25-year product warranty and 30-year linear power guarantee. If a panel offers less than 25 years, question why.
- MCS certification. If you want to claim the Smart Export Guarantee (SEG) for selling excess electricity back to the grid, your system needs MCS certification. Check that the panels and inverter are on the MCS product register.
For a full comparison of every panel available in the UK with specs, prices, and datasheets, see the Solar Panel Directory.
Solar Panel Price FAQs
How much does one solar panel cost in the UK?
Between £57 and £79 ex VAT for a mainstream 450-610W N-Type panel in the 1 July 2026 trade crawl, or roughly £68-95 with VAT at retail. That works out at 12.6-14p per watt. UK-made Viridian panels are the premium outlier at about £221.
How much does a 4kW solar system cost in 2026?
£6,000-8,000 installed by an MCS company; £7,000 is typical and sits close to the DESNZ 2025/26 median of £1,780 per kW. The same system in DIY parts costs about £1,450-1,750 including VAT, before any electrician or scaffolding fees.
Is VAT still 0% on solar panels?
Only when one company supplies and installs the system. Residential installations are zero-rated until 31 March 2027, then the rate reverts to 5%. Hardware bought on its own carries the standard 20% VAT, which is why trade listings show ex VAT prices.
Will solar panel prices go up in 2026?
They have not yet. China removed its export rebate on 1 April 2026, but our tracked UK prices are flat or lower since then: four panels got cheaper in the 1 July crawl and none got dearer. Pre-rebate stock and factory overcapacity are still winning.
How many solar panels do I need for a 4kW system?
Nine 450W panels give you 4.05kW, or seven of the 600W-class bifacials. Physical size differs more between brands than wattage suggests, so check dimensions against your roof before ordering. Our panel directory lists dimensions for every model.
This article is updated as prices change. Last updated: 3 July 2026, with the 1 July supplier crawl and DESNZ’s May 2026 installation cost release.
