A typical 4kW solar panel installation costs between £4,999 and £5,499 fully fitted in the UK in 2026. Smaller 3kW systems start around £3,999; larger 6-10kW installs run £6,500-£9,500. Battery storage adds £3,500 (5kWh) to £10,000+ (15kWh). Pre-Feed-in-Tariff prices (2012-era) were 3-4× higher than today.
Here’s the full breakdown of what you actually get for the money and what drives the price.
Solar panel costs by system size
| Property | System size | Solar only | + 5kWh battery | + 10kWh battery |
|---|---|---|---|---|
| Flat / small terrace | 3kW (8 panels) | £3,999-£4,499 | £7,499-£9,499 | n/a |
| 2-3 bed semi | 4kW (10 panels) | £4,999-£5,499 | £8,499-£10,499 | £9,499-£11,999 |
| 3-4 bed detached | 6kW (15 panels) | £6,500-£7,500 | £10,000-£12,500 | £11,000-£14,000 |
| 4-5 bed detached | 8kW (20 panels) | £8,000-£9,200 | £11,500-£14,200 | £12,500-£15,700 |
| Large detached / multi-zone | 10kW+ (25+ panels) | £9,500-£14,000 | £13,000-£18,500 | £14,500-£21,500 |
These are full installation costs for a typical property in the UK in 2026. They include panels, hybrid inverter, mounting kit, all electrical work, scaffolding, DNO notification, MCS registration and SEG application — no hidden extras.
Where the money goes
For a typical 4kW install costing £5,200, here’s the breakdown:
- 10× tier-1 panels (~400W each, 4kW total): £900-£1,400
- Hybrid inverter (Solis, GivEnergy or SolarEdge, 5kW): £700-£1,100
- Mounting kit (K2 or Schletter, German-engineered): £300-£500
- Cables, isolators, surge protection, monitoring kit: £200-£400
- Scaffolding (2-storey, typical 2-3 days): £300-£600
- DNO notification + MCS registration paperwork: £150-£250
- Installation labour (2-3 engineers, 1-2 days): £1,000-£1,500
- Survey, design, project management: £400-£600
- Profit margin / company costs: £600-£900
Total: £4,550-£7,250 depending on roof complexity, brand choice and exact configuration. Standard pricing sits in the £4,999-£5,499 band.
Solar panel costs over time
Looking at how solar pricing has evolved is useful context for anyone wondering whether to “wait a year for prices to drop further”:
| Year | 4kW install (UK average) | Notes |
|---|---|---|
| 2012 | ~£12,000 | Feed-in Tariff era, much higher panel prices |
| 2016 | ~£8,000 | Panel prices halved, FiT rates cut |
| 2020 | ~£6,500 | FiT replaced with SEG (January 2020) |
| 2023 | ~£5,500 | Energy crisis demand surge held prices |
| 2025 | ~£5,200 | Demand normalisation, panel prices flat |
| 2026 | ~£5,000-£5,500 | Largely stable, marginal further decline expected |
The big price drops are behind us. Solar panel manufacturing is now a mature commodity industry — there are no remaining 50% cost reductions to come. Year-on-year price changes have been within ±5% since 2020. If you’re considering solar and the economics make sense at current prices, waiting another year for “lower prices” is a bet on a small change.
What’s continued to improve is panel efficiency. Panels installed in 2026 are ~25% more efficient per square metre than 2018-era panels. That means you can fit more kW on the same roof, or hit the same kW with fewer panels.
What you get for £4,999 vs £6,500
The price difference between an entry-level and a premium 4kW install in 2026 is roughly £1,500. What you get for that extra:
Entry-level (~£4,999):
- Tier-1 panels (JA Solar, Trina, Jinko or Longi)
- Standard string inverter (Solis or similar)
- Standard mounting kit
- Standard 10-year workmanship + 25-year panel performance warranty
Premium (~£6,500):
- Premium panels (REC, LG, SunPower) with higher efficiency
- SolarEdge or Enphase microinverter system (panel-level optimisation, useful for shaded roofs)
- Premium mounting with corrosion-resistant fixings
- Same warranty period but more responsive support network
For most North East roofs with reasonable orientation and minimal shading, the entry-level install delivers virtually identical generation to the premium install. The premium option is genuinely worth it when:
- Your roof has chimney, vent or tree shading affecting some panels
- You’re installing on an east-west split (both aspects, no south)
- Roof access is awkward and replacement/maintenance would be expensive
- You value the better-known brand for resale value
We quote both options if your roof is borderline; for most installs the entry-level package is the right answer economically.
Battery storage cost
Battery prices vary dramatically by brand and chemistry. Current pricing:
| Battery | Capacity | Typical fitted price | Notes |
|---|---|---|---|
| GivEnergy AC | 5kWh | £3,500-£5,000 | Modular, retrofit-friendly |
| GivEnergy AC | 10kWh | £4,500-£6,500 | Most popular size |
| GivEnergy AC | 15kWh+ | £6,000-£8,500 | Larger homes or heat pump |
| Tesla Powerwall | 13.5kWh | £8,500-£10,500 | Premium, Tesla Energy Plan eligible |
| SolarEdge Home Battery | 10kWh | £5,500-£7,500 | DC-coupled with SolarEdge inverter |
| Solis hybrid + Pylontech | 5-15kWh | £4,000-£7,500 | Mid-range value option |
Battery payback runs 6-9 years standalone (on a smart tariff arbitrage basis) or 5-7 years when paired with solar. Modern LFP batteries are rated for 6,000-10,000 charge cycles — equivalent to 15-25 years of daily use. Manufacturer warranties typically cover 10 years.
What the cost gets you in savings
Worked example for a typical 3-bed semi in the North East with a 4kW solar install and 10kWh battery (total install: ~£10,500):
Year 1 financial benefit:
- Bill savings from self-consumption (70-80% of 3,500 kWh): ~£700-£800
- SEG export income (1,000-1,200 kWh at 15p): ~£150-£180
- Total Year 1: £850-£980
25-year benefit:
- Bill savings rising with electricity inflation: ~£24,000-£32,000
- SEG income (degrading slightly with battery wear): ~£3,500-£5,000
- Total 25-year: £27,500-£37,000
Payback on the £10,500 install: 8-9 years for the combined package, with the panels then continuing to generate for another 16-17 years of near-zero marginal-cost electricity.
Without a battery, the same 4kW install at £5,000 typically pays back in 7-8 years and delivers £18,000-£25,000 over 25 years. Adding the battery improves total returns at the cost of slightly longer payback.
What’s not included
A few costs that you should budget for separately if applicable:
- Bird/squirrel protection mesh: £150-£300, recommended for properties near trees or known wildlife issues
- Optimisers for shaded panels: £40-£60 per panel where partial shading affects performance
- EV charger installation: From £799 — pairs well with solar but separate quote
- Consumer unit upgrade: Rare, £300-£600 if your existing board can’t handle the inverter circuit
- Roof repair or strengthening: Some older roofs need structural work before mounting
- Listed building consent application: Rare, £200-£500 plus 4-8 week timeline
We flag any of these during the survey and quote them transparently before signing.
Solar panel cost vs heat pump cost
A useful comparison if you’re considering both:
| Service | Capital cost (typical 3-bed) | After grants | Year 1 saving |
|---|---|---|---|
| Solar + 10kWh battery | £10,500 | £10,500 (no grant) | £850-£980 |
| Heat pump (gas swap) | £12,500 | £5,000 (£7,500 BUS) | £50-£150 |
| Heat pump (oil swap) | £12,500 | £5,000 (£7,500 BUS) | £1,000-£1,500 |
| Solar + battery + heat pump | £23,000 | £15,500 | £1,300-£2,400 |
For most North East homeowners on mains gas, solar payback is faster than heat pump payback even after the BUS grant — because Year 1 savings are larger on solar. Heat pumps make economic sense fastest when replacing oil/LPG, or when the home was going to need a boiler replacement anyway.
For homes installing both, the combined install costs less than two sequential installs (shared scaffolding, electrical work, project management) and the solar dramatically reduces heat pump running costs by powering it from your own roof.
Getting a quote
If you’re in the North East — Newcastle, Sunderland, Durham, Northumberland, Teesside — we can do a free 3D roof survey within a week of enquiry. The survey takes 45-60 minutes, the quote follows within 2-3 working days, and the quote is fixed-price.
Book a free roof survey → or call 0191 535 2711.
Related: Smart Export Guarantee explained 2026 · Heat pump cost UK 2026 · Solar panels service page