Solar panels in the UK have never been cheaper. A 450W panel from a mainstream brand costs £61–73 right now. Two years ago, the same panel was closer to £90–100. That drop is mostly down to Chinese manufacturing overcapacity flooding the global market with cheap N-Type panels.
But that is about to change. On 1 April 2026, China removes its 9% VAT export rebate on solar panels. Manufacturers will absorb some of the cost initially, but prices are expected to rise 8–15% over the next 6–12 months as the impact works through the supply chain.
This guide covers what solar panels cost in the UK right now, where to buy them, and what to expect for the rest of 2026.
Low Cost Panels Price Snapshot (420–450W class)
Two-bar view: real observed panel price vs normalized equivalent at 430W (for apples-to-apples comparison).
Sources: 2023 snapshot from your my garage install (4×435W = £280 → £70/panel); 2024 snapshot from “Home Battery Storage Without Solar” (410W ≈ £56.74); 2026 current market snapshot from UK directory pricing (JA Solar 445W ≈ £64). All are Chinese-manufactured panel lines in similar watt class.
UK Solar Installation Costs: 2013/14–2023/24
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.
What Do Solar Panels Cost in the UK Right Now?
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 (inc VAT) | £/W | Cell Type |
|---|---|---|---|---|
| DMEGC 450W All Black | 450W | £61 | £0.135 | N-Type TOPCon |
| JA Solar 445W Bifacial | 445W | £64 | £0.144 | N-Type TOPCon |
| JA Solar 455W Bifacial | 455W | £64 | £0.141 | N-Type TOPCon |
| LONGi Hi-MO X6 455W | 455W | £73 | £0.161 | N-Type HPBC+ |
| Aiko Neostar 3S 645W | 645W | £97 | £0.150 | N-Type ABC |
| Viridian 445W (UK-made) | 445W | £221 | £0.496 | N-Type TOPCon |
The sweet spot for most UK homeowners is £0.13–0.16/W. At that price, panels are the cheapest component in a solar system — the inverter, mounting hardware, and (if applicable) installation labour 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.
What Does a Full Solar System Cost?
Panels are only part of the cost. Here is what a typical 4kW residential system costs in 2026:
| Component | DIY Cost | Installed Cost |
|---|---|---|
| Panels (9× 445W) | £576 | £576 |
| Hybrid inverter | £500–800 | £500–800 |
| Roof mounting | £200 | £200 |
| Cable, connectors, isolators | £100 | £100 |
| Installation labour | — | £1,500–2,500 |
| MCS certification + DNO | — | £500–800 |
| Total | £1,400–1,700 | £4,000–6,000 |
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.
For a detailed breakdown of whether the investment makes sense for your home, see our guide on 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 since 2024. The UK government removed VAT on solar panels, batteries, and energy-saving materials. This knocks 20% off the sticker price for homeowners (trade buyers were already VAT-registered, so the impact is mainly on retail/DIY).
What Is Changing in 2026?
Two things are about to push prices back up:
1. China’s export rebate removal (1 April 2026). China currently gives solar panel manufacturers a 9% VAT rebate on exports. That rebate is being removed from 1 April 2026. This effectively increases the cost of every Chinese-made panel by up to 9% at the factory gate. Manufacturers will absorb part of it initially, but the cost will work through the supply chain over the next 6–12 months. Expect UK retail prices to rise 8–15% by late 2026.
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.
The 0% VAT on solar equipment is currently scheduled until March 2027. If it expires without renewal, that adds another 5% (the expected new rate, down from the previous 20%). Combined with the rebate removal, prices could be 15–20% higher by mid-2027 compared to today.
When Should You Buy?
If you are planning a solar system for 2026, the next few months are likely the cheapest window. Current prices reflect the tail end of the Chinese overcapacity glut plus 0% VAT. Both of those tailwinds are fading.
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 to become legal (expected July 2026), those kits will include Chinese-made panels and microinverters. They will reflect the post-rebate pricing. The kits priced in euros on German websites today will cost more by the time they reach UK shelves with UK certification.
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.
This article will be updated as prices change. Last updated: 25 March 2026.
