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Solar panel cost in West Lancashire (WN8)

See realistic solar installation costs, savings and payback for WN8 (West Lancashire) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

Solar Calculator

Change the settings below to see how costs and savings work for your situation.

System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
10.9 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£748
What you save every year
Profit Over 25 Years
£10,562
After paying itself off, you're this much ahead

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How we calculate this

Solar generation: Based on typical south-facing roof at 35° angle. We account for weather, dirt, and system losses (14%).

How much you'll use directly:

  • Without battery: You'll use about 40% of what you generate. The rest gets sold back to the grid.
  • With 5 kWh battery: You'll use about 70% (battery stores extra for evening use).
  • With 10 kWh battery: You'll use about 75% (more storage means less exported).
  • Panel-only payback: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • Battery & payback: Batteries raise self-use and cut bills, but added hardware cost often lengthens break-even at typical UK rates.
  • When a battery can still make sense:
    • Evening-heavy usage patterns
    • Time-of-use tariffs / cheap night rates
    • Low export rate vs. high unit rate
    • Heat pump or EV charging synergy
    • Optional backup/resilience (system-dependent)
    • Lower evening-hour CO₂ vs. grid

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £700 per kWh. Export tariffs vary by supplier (usually 5–15p per kWh).

Grid connection: Systems up to about 3.7 kW typically need just a notification (G98). Larger systems may need permission (G99).

These are typical values based on average usage patterns. Your actual results will vary based on your roof, shading, and how you use electricity.

Your area in context

In North West, the current unit rate is 26.13p/kWh with a 47.61p/day standing charge. Your postcode’s south-facing sunshine yield is 909 kWh/kW — 39 above the regional median (870).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 909 kWh per year on a south-facing roof. We value self-used electricity at 26.1p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.1p/kWh
Standing charge
47.6p/day
Sunshine yield (south)
909 kWh/kW
Export price (baseline)
10p/kWh

Browse the scenarios below. Each battery size has its own expand — open the one that matches your plan (or just explore). For each system size (2–8 kW) we show annual output, how much you use directly, what gets exported, annual benefit, upfront cost, break-even, and a 20-year net. Negative numbers are possible — that’s the honest trade-off when adding more battery than your usage profile justifies.

No battery 5 kW example → Annual benefit: £748, Upfront: £8,139, Break-even: 10.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 727 kWh 1091 kWh £190 £109 £299 £3,256 10.9 yrs £2,729
3 kW 2728 kWh 1091 kWh 1637 kWh £285 £164 £449 £4,883 10.9 yrs £4,093
4 kW 3637 kWh 1455 kWh 2182 kWh £380 £218 £598 £6,511 10.9 yrs £5,458
5 kW 4547 kWh 1819 kWh 2728 kWh £475 £273 £748 £8,139 10.9 yrs £6,822
6 kW 5456 kWh 2182 kWh 3274 kWh £570 £327 £898 £9,767 10.9 yrs £8,187
7 kW 6366 kWh 2546 kWh 3819 kWh £665 £382 £1,047 £11,394 10.9 yrs £9,551
8 kW 7275 kWh 2910 kWh 4365 kWh £760 £436 £1,197 £13,022 10.9 yrs £10,915

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £895, Upfront: £10,239, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1091 kWh 727 kWh £285 £73 £358 £5,356 15.0 yrs £1,802
3 kW 2728 kWh 1637 kWh 1091 kWh £428 £109 £537 £6,983 13.0 yrs £3,753
4 kW 3637 kWh 2182 kWh 1455 kWh £570 £145 £716 £8,611 12.0 yrs £5,705
5 kW 4547 kWh 2728 kWh 1819 kWh £713 £182 £895 £10,239 11.4 yrs £7,656
6 kW 5456 kWh 3274 kWh 2182 kWh £855 £218 £1,074 £11,867 11.1 yrs £9,607
7 kW 6366 kWh 3819 kWh 2546 kWh £998 £255 £1,253 £13,494 10.8 yrs £11,558
8 kW 7275 kWh 4365 kWh 2910 kWh £1,141 £291 £1,432 £15,122 10.6 yrs £13,509

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £968, Upfront: £11,639, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1273 kWh 546 kWh £333 £55 £387 £6,756 17.4 yrs £989
3 kW 2728 kWh 1910 kWh 818 kWh £499 £82 £581 £8,383 14.4 yrs £3,234
4 kW 3637 kWh 2546 kWh 1091 kWh £665 £109 £774 £10,011 12.9 yrs £5,478
5 kW 4547 kWh 3183 kWh 1364 kWh £832 £136 £968 £11,639 12.0 yrs £7,723
6 kW 5456 kWh 3819 kWh 1637 kWh £998 £164 £1,162 £13,267 11.4 yrs £9,967
7 kW 6366 kWh 4456 kWh 1910 kWh £1,164 £191 £1,355 £14,894 11.0 yrs £12,212
8 kW 7275 kWh 5092 kWh 2182 kWh £1,331 £218 £1,549 £16,522 10.7 yrs £14,456

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £990, Upfront: £13,389, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1328 kWh 491 kWh £347 £49 £396 £8,506 21.5 yrs £-585
3 kW 2728 kWh 1992 kWh 737 kWh £520 £74 £594 £10,133 17.1 yrs £1,748
4 kW 3637 kWh 2655 kWh 982 kWh £694 £98 £792 £11,761 14.8 yrs £4,080
5 kW 4547 kWh 3319 kWh 1228 kWh £867 £123 £990 £13,389 13.5 yrs £6,413
6 kW 5456 kWh 3983 kWh 1473 kWh £1,041 £147 £1,188 £15,017 12.6 yrs £8,745
7 kW 6366 kWh 4647 kWh 1719 kWh £1,214 £172 £1,386 £16,644 12.0 yrs £11,078
8 kW 7275 kWh 5311 kWh 1964 kWh £1,388 £196 £1,584 £18,272 11.5 yrs £13,410

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,005, Upfront: £15,139, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1364 kWh 455 kWh £356 £45 £402 £10,256 25.5 yrs £-2,218
3 kW 2728 kWh 2046 kWh 682 kWh £535 £68 £603 £11,883 19.7 yrs £174
4 kW 3637 kWh 2728 kWh 909 kWh £713 £91 £804 £13,511 16.8 yrs £2,565
5 kW 4547 kWh 3410 kWh 1137 kWh £891 £114 £1,005 £15,139 15.1 yrs £4,956
6 kW 5456 kWh 4092 kWh 1364 kWh £1,069 £136 £1,206 £16,767 13.9 yrs £7,347
7 kW 6366 kWh 4774 kWh 1591 kWh £1,247 £159 £1,407 £18,394 13.1 yrs £9,738
8 kW 7275 kWh 5456 kWh 1819 kWh £1,426 £182 £1,608 £20,022 12.5 yrs £12,130

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,019, Upfront: £17,589, Break-even: 17.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1400 kWh 418 kWh £366 £42 £408 £12,706 31.2 yrs £-4,550
3 kW 2728 kWh 2101 kWh 627 kWh £549 £63 £612 £14,333 23.4 yrs £-2,100
4 kW 3637 kWh 2801 kWh 837 kWh £732 £84 £816 £15,961 19.6 yrs £349
5 kW 4547 kWh 3501 kWh 1046 kWh £915 £105 £1,019 £17,589 17.3 yrs £2,799
6 kW 5456 kWh 4201 kWh 1255 kWh £1,098 £125 £1,223 £19,217 15.7 yrs £5,249
7 kW 6366 kWh 4902 kWh 1464 kWh £1,281 £146 £1,427 £20,844 14.6 yrs £7,699
8 kW 7275 kWh 5602 kWh 1673 kWh £1,464 £167 £1,631 £22,472 13.8 yrs £10,149

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

Figures are illustrative and use the same method as the calculator above. For exact results, adjust your roof direction, tariff, and usage in the calculator.

Before you request quotes in West Lancashire

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Understand DNO, G98 and G99 export limits

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Insights for WN8

Figures below are tailored to WN8 — click through for full league tables.

Big-Roof Britain Rank #1283 of 2182
4.8 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1950 of 2996
10.9 years (UK avg 10.8 years)
~£748 /yr • £8,139 upfront
Standing-Charge Drag Rank #1059 of 2996
23.3% (UK avg 26.6%) drag on savings
£174 fixed • ~£748 /yr value
Aspect Penalty View ranking →
East −19.5% West −20.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in WN8

Monthly generation per kilowatt of solar panels

kWh 29 Jan 48 Feb 80 Mar 107 Apr 118 May 113 Jun 112 Jul 101 Aug 82 Sep 56 Oct 37 Nov 27 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 45.7% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 35 kWh per month; the average month produces around 76 kWh. So a typical 4 kW home system would generate roughly 139 kWh in winter, or 303 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.13p/kWh
Daily Fixed Charge
47.61p/day
Local Sunshine
909kWh/kW
A 1 kW system generates ~909 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 72% • Flats: 17% • Bungalows: 8% Based on 14,799 properties

Coverage

West Lancashire (100%)

Areas Covered

Skelmersdale South, Up Holland, Old Skelmersdale, Skelmersdale North, Tanhouse & Skelmersdale Town Centre, Rural North East, Rural South, Rainford + 1 more

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

Property data: EPC open data (Open Government Licence), aggregated

All estimates are typical values. Actual results vary based on your specific situation, roof characteristics, and usage patterns.

Compare nearby areas

Nearby in North West

WN5 (Wigan)
≈6.0 km away
Local sunshine: ~905 kWh/kWp · -0% vs WN8
L40 (West Lancashire)
≈7.4 km away
Local sunshine: ~917 kWh/kWp · +1% vs WN8
L39 (West Lancashire)
≈7.8 km away
Local sunshine: ~919 kWh/kWp · +1% vs WN8
WN6 (Wigan)
≈8.1 km away
Local sunshine: ~885 kWh/kWp · -3% vs WN8
WN3 (Wigan)
≈8.7 km away
Local sunshine: ~901 kWh/kWp · -1% vs WN8
WN1 (Wigan)
≈9.3 km away
Local sunshine: ~901 kWh/kWp · -1% vs WN8

Similar sunshine across the UK

SA45 (Ceredigion)
~909 kWh/kWp · -0% vs WN8
NE30 (North Tyneside)
~909 kWh/kWp · +0% vs WN8
NE29 (North Tyneside)
~909 kWh/kWp · +0% vs WN8