Viridian Solar Panels UK Review
Viridian Solar is a British manufacturer based in Cambridge, specialising in in-roof (integrated) solar panels — panels that sit flush within the roof surface, replacing tiles or slates, rather than bolting on top of them. Their Clearline fusion and PV16 systems are widely used on new-builds, heritage properties, and aesthetic-sensitive installs. This review covers Viridian's products, pricing, and the trade-offs vs standard on-roof panels.
Quick Answer
Viridian Solar makes British-designed in-roof solar panels. Clearline fusion (integrated panel) and PV16 (integrated roof system) are the main products. Prices run 15–25% higher than on-roof systems but deliver a flush, slate-level aesthetic. Common on new-builds, listed buildings, planning-sensitive areas, and high-end custom homes. UK-made in Cambridge since 2004.
Who are Viridian Solar?
Viridian Solar is a British solar panel manufacturer founded in 2004 and based in Cambridge. Unlike most panel brands, Viridian does not make the silicon cells themselves — it buys Tier 1 cells (typically from Jinko, JA Solar, or LONGi) and assembles them into custom mounting systems designed to integrate with UK roof structures. The company is one of the few solar brands designed and assembled in the UK.
Viridian is widely specified by UK architects and conservation officers for planning-sensitive installs where standard on-roof panels wouldn't be approved.
Viridian product range
Clearline fusion
Viridian's flagship product. A standard-size panel (1,680 × 1,000 mm, 375–395W) with a bespoke aluminium frame designed to fit flush into the roof surface, sealed against wind-driven rain with integrated flashing. Cell technology: Monocrystalline N-type (2024+ range).
PV16
Larger-format integrated system where the entire roof area is solar — used on new-builds and full roof replacements. Sits flush with surrounding tiles or slates. Typical 2–8 kWp system size.
Clearline on-roof
A standard on-roof product for conventional installations, for homeowners who want UK manufacturing without the in-roof premium.
Viridian UK pricing
| System | Viridian Clearline in-roof | Standard on-roof (Jinko/JA) |
|---|---|---|
| 3 kWp | £6,500–£8,500 | £5,000–£6,500 |
| 4 kWp | £8,000–£10,500 | £6,500–£8,000 |
| 4 kWp + 5 kWh battery | £10,500–£13,500 | £8,500–£10,500 |
| 6 kWp | £11,000–£14,000 | £8,500–£11,000 |
In-roof pricing carries a 15–25% premium over standard on-roof systems because of the bespoke flashing, roof structure modifications, and slower install time.
When Viridian is the right choice
Viridian's in-roof systems make financial sense in specific scenarios:
- New-build homes: integrating solar during construction costs the same as adding it to a finished roof — and you get a flush aesthetic.
- Roof replacement: if your tiles or slates need replacing anyway, integrating solar avoids doing the roof work twice.
- Conservation areas: planning officers often require in-roof or slate-style PV for listed buildings and conservation areas. Viridian is widely accepted.
- Aesthetic-sensitive clients: architects and homeowners who find on-roof panels visually intrusive.
- Heritage / period properties: Clearline fusion with black frames and rails blends with slate roofs better than most alternatives.
For a standard retrofit on a conventional UK home with no planning concerns, the 15–25% price premium is hard to justify vs on-roof panels. See our solar tiles guide and best UK panels guide.
Frequently Asked Questions
Are Viridian solar panels UK-made?
Viridian is British-designed and assembled in Cambridge. The PV cells themselves are sourced from Tier 1 Chinese manufacturers (Jinko, JA Solar, LONGi) — same as most UK-sold panels — but the frame, flashing, and integration hardware is designed and fabricated in the UK.
How much more expensive is Viridian than on-roof solar?
In-roof Clearline systems typically cost 15–25% more than equivalent on-roof Chinese panels. The premium reflects bespoke flashing, more labour-intensive installation, and low-volume UK manufacturing.
Is Viridian good for listed buildings and conservation areas?
Yes — Viridian's in-roof systems are widely approved by conservation officers and planning departments because they sit flush with the roof and blend visually with surrounding tiles. For listed buildings always confirm with your local planning authority before ordering.
What is Clearline fusion?
Clearline fusion is Viridian's integrated solar panel — a standard PV module combined with an aluminium frame and integrated lead-flashing kit that allows the panel to sit within the roof surface, replacing tiles or slates rather than sitting on top of them.
Is an integrated solar roof worth it?
For new-builds, roof replacements, and planning-sensitive areas — yes, the aesthetic and integration advantages usually justify the 15–25% premium. For a standard retrofit with no planning concerns, on-roof systems deliver better value.
Viridian vs solar tiles — which is better?
Viridian in-roof panels use standard-size PV modules set into the roof surface — simpler, cheaper, and more efficient than full solar tile systems like Tesla Solar Roof. True solar tiles (small tile-sized units) are more expensive and usually less efficient. For most UK buyers, Viridian is the better integrated option.
Related integrated solar guides
Related Guides
Solar Tiles
Solar roof tiles: costs, brands, tiles vs panels, and planning rules.
Panel Brands
Best solar panel brands available in the UK.
Planning Permission
Permitted development, listed buildings, and when you need to apply.
Flat Roof Solar Panels
Flat roof solar: costs, mounting systems, east-west layouts, and planning.
Sources
- Viridian Solar — viridiansolar.co.uk
- MCS — Solar Installer Certification — mcscertified.com
Last updated: April 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.
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