How much do solar panels cost in the UK?

Real price ranges for 2025–2026 (fully installed, MCS-certified, 0% VAT)

The 0% VAT on residential solar installations, made permanent in the 2023 Autumn Statement, saves homeowners approximately £1,000–2,500 per installation. All figures below are inclusive of installation, scaffolding, MCS certification, electrical work, and commissioning — the total you pay.

**3kWp system (8–10 panels): £4,500–5,500** — Suitable for smaller 2–3 bed homes. Jinko 420W panels + Growatt string inverter. Generation: ~2,800 kWh/year. Best for households with modest daytime usage.

**4kWp system (10–12 panels): £5,000–6,500** — The UK sweet spot. REC 420W or Longi 430W panels + SolarEdge inverter with power optimisers. Generation: ~3,600 kWh/year. Covers 80%+ of average UK household electricity consumption.

**5kWp system (12–14 panels): £6,000–7,500** — For larger homes or higher consumption. REC Alpha Pure-R 430W with SolarEdge optimised system. Generation: ~4,500 kWh/year.

**6–8kWp system (16–20 panels): £7,500–9,500** — Larger homes, home offices, or EV charging households. Often split across multiple roof faces using optimisers.

What each component costs

- **Panels (per 400–440W unit):** Budget tier (Longi, JA Solar, Canadian Solar): £80–130. Mid tier (Jinko Tiger Neo, Trina Vertex S+): £120–170. Premium tier (REC Alpha Pure-R, SunPower Maxeon 3/6, Aiko): £160–240. Premium panels pay for themselves through better low-light performance and 92% vs 85% output at year 25 — a 7% generation advantage that compounds.

- **Inverter:** String inverter (Growatt, Solis): £400–650. Mid-range (Fronius, SMA): £700–1,000. Optimised (SolarEdge Home Hub): £800–1,100. Microinverters (Enphase IQ8M, £100–130 per panel): £1,200–2,000 for a full system. Microinverters or optimisers are essential for roofs with partial shading or multiple orientations — they pay for themselves through increased generation in non-ideal conditions.

- **Battery storage (add-on):** 5kWh (GivEnergy All-in-One, Fox ESS EP5): £2,500–3,500 installed. 9.5–10kWh (GivEnergy 9.5, Fox ESS EP11, SolarEdge Home Battery): £4,000–6,000. 13.5kWh (Tesla Powerwall 3): £7,500–8,500. Battery price per kWh has fallen approximately 50% since 2020 (BloombergNEF data), from ~£500/kWh to ~£250–350/kWh installed.

- **Scaffolding:** £400–800 depending on roof height, access difficulty, and region. Terraced houses in London may cost more than detached homes in the Midlands due to access constraints.

- **Mounting system:** £300–600 for rails, clamps, flashings (Van der Valk, Renusol, or K2 Systems). Integrated in-roof systems (GSE In-Roof, Viridian Clearline) add £800–1,500 but provide a sleeker aesthetic.

- **MCS certification, DNO notification, and commissioning:** £200–400. These are regulatory requirements — not optional extras. Without MCS certification, you cannot claim SEG payments.

Hidden costs dishonest quotes leave out

1. **G99/G100 DNO application:** Systems over 3.68kW (single-phase) require prior approval from the Distribution Network Operator. This takes 2–6 weeks. Some installers quote without including the application fee or time. If your local grid has limited capacity (increasingly common in rural areas), you may need a G100 export limitation device (£200–400) or face an upgrade charge (£1,000–3,000 for transformer upgrades).

2. **Consumer unit upgrade:** If your fuse board predates the 18th Edition regs (pre-2019) and lacks RCD protection or a spare way, budget £350–600 for an SPD upgrade or full board replacement.

3. **Bird proofing:** Pigeons nesting under panels cause significant damage. Mesh edge protection: £300–500. A small cost that prevents expensive repairs.

4. **Monitoring:** Many inverters include basic monitoring via app. Advanced per-panel monitoring (SolarEdge or Enphase) is included with those systems. Standalone energy monitoring (Shelly EM, Emporia Vue): £100–150 add-on.

5. **Immersion diverter:** A solar power diverter (MyEnergi Eddi, Solic 200) routes excess solar to your hot water cylinder: £350–550 installed. Payback is rapid — it can add £80–150/year in gas savings.

How to get accurate quotes

Any serious installer should use remote design software (SolarEdge Designer, PV*SOL, OpenSolar) that models your specific roof from satellite imagery and LiDAR data. This produces a shading analysis, generation estimate, and financial model before anyone visits your property. At Sunlit Solutions, we provide this as standard with every quote.

Beware of installers who quote over the phone based on roof size alone. Without a digital survey, a quote is a guess. Also beware of anyone quoting below £1,200/kWp — at that price, either corners are being cut on components, scaffolding, or certification.