Solar Roof Tiles vs Panels: Install Cost 2026 (UK)
In 2026, conventional solar panels cost £1,200–£1,800 per kWp installed, so a typical 4kWp system lands at £5,500–£7,500 and a 6kWp at £8,000–£11,000. Integrated solar roof tiles (BIPV / solar slates) typically cost 1.5–2.5x more — roughly £2,400–£4,000 per kWp, or £11,000–£17,000 for an equivalent 4kWp roof. Tiles win on looks and on new-builds or re-roofs; panels win decisively on cost-per-watt for retrofits.
Solar tiles vs panels in 2026 — the verdict
If cost is your priority, fit panels. If you are already re-roofing, building new, or your roof is conservation/aesthetically sensitive, integrated tiles can be worth the premium.
- Conventional panels (on-roof PV): £1,200–£1,800/kWp installed. 4kWp ≈ £5,500–£7,500; 6kWp ≈ £8,000–£11,000.
- Integrated solar tiles / slates (BIPV): £2,400–£4,000/kWp installed — roughly 1.5–2.5x panels. 4kWp ≈ £11,000–£17,000; 6kWp ≈ £16,000–£24,000.
- Efficiency: panels 19–22% (≈ 200–215 W/m²); most solar tiles 14–18% (≈ 110–150 W/m²) — you need more roof for the same kWp.
- Best for tiles: new-build, full re-roof, listed/conservation areas, design-led homes.
- Best for panels: retrofit on a sound existing roof — the cheapest route to the same generation and the same SEG export earnings.
Both qualify for 0% VAT on installation (UK, to March 2027) and both can be MCS-certified — which is what unlocks SEG export payments. Generation per installed kWp is broadly the same; you are paying the tile premium for looks and roof integration, not for more electricity.
Solar roof tiles vs panels: full 2026 comparison
All figures are installed, incl. inverter, mounting/integration, scaffolding and MCS sign-off, at 0% VAT. "Tiles" means integrated BIPV products (solar slates / in-roof solar tiles); "panels" means standard framed monocrystalline PV on roof hooks.
Note: solar tiles and panels generate roughly the same electricity per installed kWp. The tile premium buys aesthetics and roof integration, not extra output. See our full solar panel cost guide UK for system-by-system pricing.
Where the money goes — 4kWp tiles vs panels
This is why the tile system costs roughly twice as much. The PV cells are a small part of the gap; the bigger drivers are the integrated product cost, the extra labour and (on a re-roof) the roofing works underneath.
All lines shown at 0% VAT (qualifying domestic installation, UK, to 31 March 2027). Adding a battery (e.g. 5kWh) is a further £2,500–£4,500 on either system. Run your own numbers with our solar panel cost calculator.
Which should you choose?
Choose integrated solar tiles if…
You are building new or your roof is due a full re-roof anyway (you offset the cost of tiles/slates you would have bought regardless); you live in a conservation area or own a listed building where a flush, traditional-looking roof eases planning; or appearance genuinely matters to you and you accept paying a 1.5–2.5x premium for it. Tiles also suit roofs broken up by hips, valleys and dormers where rectangular panels fit poorly — small-format solar slates can follow awkward geometry.
Choose conventional panels if…
Your existing roof covering is sound and has years of life left (retrofit on hooks is the cheapest route to generation); you want the lowest cost-per-watt and the fastest payback; or you have a large, simple south/east/west pitch where high-efficiency panels pack maximum kWp into the space. For the overwhelming majority of UK retrofit homeowners, panels are the rational financial choice — the generation and SEG income are the same.
Payback & SEG reality check
Because both systems generate and export the same kWh per kWp, the tile premium does not earn extra SEG income. A 4kWp panel system paying back in roughly 7–10 years can stretch to 12–18 years as tiles, purely on the higher upfront cost. Treat the tile premium as a fabric/aesthetic decision, not an energy-return one. Always insist on MCS certification — without it you cannot register for Ofgem's Smart Export Guarantee.
Two worked examples: when tiles win, when panels win
Example 1 — Re-roof in Surrey (tiles make sense)
1930s detached home needing a full re-roof anyway; owner wants 4.2kWp and dislikes the look of on-roof panels. Quote from an MCS installer: integrated solar slates at £14,800 (0% VAT), including stripping and re-covering the front pitch. Because £6,000 of that re-roof was due regardless, the net solar premium over a panel system is around £4,500–£6,000 — and the owner gets one flush roof finished in a single visit.
Verdict: defensible. The re-roof timing and the aesthetic priority justify the integrated route. Generation ≈ 3,600–3,900 kWh/yr — same as panels of the same kWp.
Example 2 — Retrofit in Leeds (panels win)
1990s semi with a sound concrete-tile roof, 15+ years of life left. Owner wants 4kWp purely for bill savings and SEG. On-roof panel quote: £6,400 (0% VAT), 1.5 days, MCS-certified. An equivalent integrated-tile quote came in at £12,900 — double the cost for the same ≈ 3,700 kWh/yr and the same SEG export rate.
Verdict: fit panels. There is no roofing work to offset, so the tile premium is pure cost with no extra return. Payback on the panels is ≈ 8 years; tiles would push it past 16.
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Frequently asked questions
Only in specific cases. Because tiles and panels generate the same electricity per installed kWp, the 1.5–2.5x tile premium does not earn extra SEG income, so payback is longer. Tiles are worth it if you are re-roofing or building new (offsetting the roof-covering cost), or if appearance or conservation rules rule out visible panels. For a straightforward retrofit, panels are the better financial choice.
Integrated solar tiles typically cost £2,400–£4,000 per kWp installed in 2026 — roughly 1.5–2.5x conventional panels at £1,200–£1,800/kWp. A 4kWp tile roof runs around £11,000–£17,000 and a 6kWp around £16,000–£24,000, at 0% VAT. A full re-roof adds to that, but offsets the cost of the standard tiles you would otherwise have bought.
Most integrated tiles run at 14–18% cell efficiency versus 19–22% for modern panels, so they produce less per square metre (≈ 110–150 W/m² vs ≈ 200–215 W/m²). That means you need more roof area to reach the same kWp — about 27–36 m² for 4kWp of tiles versus 19–22 m² of panels. Per installed kWp, however, annual generation is broadly the same.
Yes. Both panels and integrated tiles qualify for Ofgem's Smart Export Guarantee provided the installation is MCS-certified (and the inverter G98/G99 compliant). SEG pays you per kWh exported to the grid, and the rate is identical regardless of whether your generation comes from tiles or panels. Without MCS certification you cannot register for SEG.
No — qualifying domestic solar installations in the UK carry 0% VAT until 31 March 2027, covering both panels and integrated solar tiles plus battery storage installed at the same time. Always confirm the installer is applying the zero rate; some still quote ex-VAT and then add it in error. After March 2027 the rate is expected to revert to 5%.
Yes, and it is increasingly common. A typical approach is integrated tiles on the prominent front pitch (for kerb appeal or planning) and cheaper panels on a hidden rear or side pitch to maximise kWp on a budget. A good MCS installer will design the string/inverter layout to handle the different module types and orientations, and the whole system is registered for SEG together.
Sources used in our 2026 figures
- MCS — Microgeneration Certification Scheme — certification standards for solar PV and the registration route for SEG eligibility
- Energy Saving Trust — Solar Panels — UK system sizes, generation estimates and indicative costs
- Ofgem — Smart Export Guarantee (SEG) — export tariff framework and supplier obligations
- gov.uk — VAT on energy-saving materials — 0% VAT relief on domestic solar installation to 31 March 2027
Methodology note: Per-kWp and system prices use representative 2026 quote data from BestBuilders' UK MCS-certified solar installer network (Q2 2026, 200+ vetted firms), cross-checked against Energy Saving Trust cost guidance. Tile premiums reflect integrated BIPV product pricing; re-roof costs vary by property. Last fact-checked: .