Best Solar Panels UK: Top Brands Compared
Aiko, JA Solar, LONGi, Jinko and more — compared on efficiency, warranty and price, with an honest look at which panel actually suits your roof.
The short answer
For most UK homes in 2026, mainstream Tier 1 panels — JA Solar, LONGi, Jinko and Trina — offer the best balance of efficiency, warranty and price.
If your roof is small or shaded, Aiko Neostar leads on efficiency (around 24%). For the longest warranties, REC and SunPower Maxeon are the premium picks. But the single biggest factor in your results isn’t the panel — it’s choosing a reputable, MCS-certified installer.
What this guide covers
Searching for the “best solar panels UK” throws up a bewildering list of brands, wattages and efficiency figures. This guide cuts through it: we compare the panels UK installers actually fit in 2026, explain what the numbers really mean for your home, and — crucially — help you work out which panel suits your roof.
Everything here is written in plain English with no sales pressure, because Going Solar UK doesn’t sell panels. We simply help homeowners compare quotes from trusted, MCS-certified installers. If you’re also weighing up storage, our guide to solar batteries and whether they’re worth it is a useful companion read.
What actually matters when choosing a panel
Before the brand rankings, it helps to know which specs matter — because headline wattage sells panels, but it’s not how you should choose one.
- Efficiency — how much power you get per square metre. Matters most on small or shaded roofs, where you need to fit more capacity into less space. On a big roof, it matters far less — you just add more panels.
- Degradation rate — how much output the panel loses each year. Modern N-type panels degrade around 0.4% a year, so they keep more of their performance over 25+ years.
- Warranty — both the product warranty (against failure) and the performance warranty (guaranteed output at year 25). Longer is better for a “forever home”.
- Price per watt — the fairest way to compare cost across different panel sizes.
The best solar panels in 2026
There’s no single “best” panel — the right one depends on your roof, budget and priorities. Here are the brands UK installers fit most often, and what each is known for.
Aiko Neostar
Highest efficiencyThe efficiency leader on the UK market. Aiko’s back-contact (ABC) cells reach around 24% and cope with partial shade better than most — making them the top pick for compact, terraced or partly-shaded roofs where every square metre counts. You pay a 10–15% premium per watt, but you fit more power on less roof.
JA Solar
Most-fitted all-rounderThe safe, well-supported all-rounder fitted on a large share of UK installs — used by around 41% of installers. Reliable, affordable, widely available, and it “just works”. For most standard roofs with room to spare, JA Solar delivers the best return on investment. The 455W panel is a current UK best-seller.
LONGi Hi-MO X10
Smart defaultFrom the world’s largest solar manufacturer. The Hi-MO X10 pairs strong 485W output with 23.8% efficiency — generating 10–15% more per panel than mid-range options, without a full premium price. Sleek all-black looks and top-tier backing make it a smart default for many UK homes.
Also worth knowing
- Jinko & Trina — excellent Tier 1 value champions, similar specs to JA Solar, dependable and widely available.
- REC Alpha — premium all-rounder with excellent shade handling and a long warranty; great for tricky roofs.
- SunPower Maxeon — the longest warranty in the industry (up to 40 years); premium price, ideal for a forever home.
- Q CELLS — trusted brand, solid value or legacy option; reliable if not cutting-edge.
Quick comparison table
| Brand | Efficiency | Best for | Warranty |
|---|---|---|---|
| Aiko Neostar | ~24% | Small / shaded roofs | 30 years |
| LONGi Hi-MO X10 | 23.8% | Max output, all-round | 15–25 years |
| JA Solar | 21–22% | Best value, large roofs | 15 years |
| Jinko / Trina | 21–22% | Dependable value | 15 years |
| REC Alpha | ~22% | Shaded roofs | 25 years |
| SunPower Maxeon | ~24% | Forever homes | 40 years |
Which panel for your roof?
The honest way to choose is to start with your roof, not the brand:
Small / terraced / shaded roof
- Go high-efficiency to fit more power in less space
- Aiko Neostar or LONGi Hi-MO X10
- REC Alpha if shading is a real problem
- Worth the per-watt premium here
Large / unshaded roof
- Efficiency matters less — just add more panels
- JA Solar, Jinko or Trina
- Best return on investment
- Save the premium for a battery instead
Thinking about the whole system?
Panels are just one part. Many homeowners pair them with storage to use more of their own power — see our guide to solar batteries and whether they’re worth it. And if cost is your concern, check what help is available in our guide to grants for solar panels.
Best angle and direction for solar panels in the UK
Two of the most common questions — and they matter more than which brand you pick on a decent roof:
- Direction: South-facing roofs generate the most electricity in the UK. East or west-facing roofs still work well, producing around 15–20% less than south — and an east-west split can actually spread generation more evenly across the day, which pairs nicely with a battery.
- Angle: a tilt of around 30–40 degrees is the sweet spot for most UK homes. Most pitched roofs are already close to this. Flat roofs use mounting frames to achieve the right angle.
A good installer assesses your specific roof, orientation and any shading before recommending a layout — it’s part of what you’re paying for.
Why the installer matters more than the panel
Here’s the point almost every honest guide agrees on: the installer matters more than the panel brand. A great panel fitted badly will underperform a mid-range panel fitted well. The panel itself is only around 20–30% of your total install cost — the rest is inverter, mounting, labour and certification.
So while it’s worth picking a solid Tier 1 panel, don’t agonise over it. Put your energy into finding a reputable, MCS-certified installer with good reviews and a proper warranty. That single decision affects your results far more than choosing Aiko over JA Solar.
What do the best solar panels cost?
Panel-only retail prices in 2026 typically run from around £90–£150 per panel for mainstream Tier 1 brands (JA Solar, Jinko, Trina, LONGi), rising for premium options (Aiko, REC, SunPower Maxeon). But panels are only part of the picture — a full installed system for a typical 3-bed home usually lands somewhere in the region of £5,000–£10,000 depending on size, panel choice and whether you add a battery.
Remember that solar carries 0% VAT in the UK (until at least March 2027), and you can be paid for exported power through the Smart Export Guarantee. For the full cost picture and available support, see our guide to solar panel grants and funding.
Frequently asked questions
What are the best solar panels in the UK in 2026?
For most UK homes, JA Solar, LONGi, Jinko and Trina offer the best balance of efficiency, warranty and price. Aiko leads on efficiency (around 24%) for small or shaded roofs, while REC and SunPower Maxeon offer the longest warranties. The best panel depends on your roof size, budget and how long you’ll stay in the home.
Which solar panel brand is best for a small roof?
Aiko Neostar is the efficiency leader at around 24%, using back-contact (ABC) technology that fits more capacity into limited space and handles partial shade well — making it the top pick for small or shaded UK roofs. LONGi Hi-MO X10 is a strong high-output alternative.
What is the best angle and direction for solar panels in the UK?
South-facing panels at a tilt of around 30–40 degrees typically generate the most electricity in the UK. East or west-facing roofs still work well, producing around 15–20% less than south-facing, and can spread generation across the day. A good installer will assess your specific roof.
Does the solar panel brand matter more than the installer?
No. The installer matters more than the panel brand. A great panel fitted badly will underperform a mid-range panel fitted well. The panel is only around 20–30% of your install cost, so choosing a reputable, MCS-certified installer is the most important decision.
How many solar panels do I need?
A typical 3-bed UK home needs around 8–12 panels (roughly a 3.5–5kW system), depending on your electricity use, roof space and panel efficiency. Higher-efficiency panels like Aiko let you fit more capacity into a smaller area. An installer will size it to your home.
Great panels are easy — a great installer is everything
The bottom line: Pick a solid Tier 1 panel that suits your roof, then focus your energy on finding a great MCS-certified installer — that’s what really drives your results.
Get my free quotes →The verdict
The “best” solar panel isn’t a single brand — it’s the right match for your roof. For small or shaded roofs, Aiko’s efficiency earns its premium. For most standard roofs, JA Solar, LONGi, Jinko or Trina give the best value and return.
But whichever panel you choose, the installer makes the biggest difference. The smartest move is to compare quotes from several MCS-certified installers, see which panels they recommend for your home, and choose on quality — not just the brand name on the box.
Important
Going Solar UK is an introduction service, not an installer. We don’t design, supply, or fit solar systems ourselves. Panel specifications, efficiency figures and prices in this guide are indicative 2026 market information and vary by model, supplier and installer — always confirm current details and get a tailored quote. Brand names and trademarks belong to their respective owners and are shown to illustrate the market.
We may receive a commission when we introduce you to an installer, at no cost to you. Any contract for work is directly between you and the installer.