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Solar panel cost in Halton (WA88)

See realistic solar installation costs, savings and payback for WA88 (Halton) 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
10.5 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£778
What you save every year
Profit Over 25 Years
£11,321
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 Wales and Mersey, the current unit rate is 27.66p/kWh with a 70.76p/day standing charge. Your postcode’s south-facing sunshine yield is 912 kWh/kW — 18 below the regional median (930).

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 912 kWh per year on a south-facing roof. We value self-used electricity at 27.7p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.7p/kWh
Standing charge
70.8p/day
Sunshine yield (south)
912 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: £778, Upfront: £8,139, Break-even: 10.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1825 kWh 730 kWh 1095 kWh £202 £109 £311 £3,256 10.5 yrs £2,972
3 kW 2737 kWh 1095 kWh 1642 kWh £303 £164 £467 £4,883 10.5 yrs £4,457
4 kW 3649 kWh 1460 kWh 2190 kWh £404 £219 £623 £6,511 10.5 yrs £5,943
5 kW 4562 kWh 1825 kWh 2737 kWh £505 £274 £778 £8,139 10.5 yrs £7,429
6 kW 5474 kWh 2190 kWh 3284 kWh £606 £328 £934 £9,767 10.5 yrs £8,915
7 kW 6386 kWh 2554 kWh 3832 kWh £707 £383 £1,090 £11,394 10.5 yrs £10,400
8 kW 7298 kWh 2919 kWh 4379 kWh £808 £438 £1,245 £13,022 10.5 yrs £11,886

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: £939, Upfront: £10,239, 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 1825 kWh 1095 kWh 730 kWh £303 £73 £376 £5,356 14.3 yrs £2,160
3 kW 2737 kWh 1642 kWh 1095 kWh £454 £109 £564 £6,983 12.4 yrs £4,291
4 kW 3649 kWh 2190 kWh 1460 kWh £606 £146 £752 £8,611 11.5 yrs £6,421
5 kW 4562 kWh 2737 kWh 1825 kWh £757 £182 £939 £10,239 10.9 yrs £8,551
6 kW 5474 kWh 3284 kWh 2190 kWh £908 £219 £1,127 £11,867 10.5 yrs £10,681
7 kW 6386 kWh 3832 kWh 2554 kWh £1,060 £255 £1,315 £13,494 10.3 yrs £12,812
8 kW 7298 kWh 4379 kWh 2919 kWh £1,211 £292 £1,503 £15,122 10.1 yrs £14,942

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: £1,020, Upfront: £11,639, 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 1825 kWh 1277 kWh 547 kWh £353 £55 £408 £6,756 16.6 yrs £1,405
3 kW 2737 kWh 1916 kWh 821 kWh £530 £82 £612 £8,383 13.7 yrs £3,857
4 kW 3649 kWh 2554 kWh 1095 kWh £707 £109 £816 £10,011 12.3 yrs £6,310
5 kW 4562 kWh 3193 kWh 1368 kWh £883 £137 £1,020 £11,639 11.4 yrs £8,762
6 kW 5474 kWh 3832 kWh 1642 kWh £1,060 £164 £1,224 £13,267 10.8 yrs £11,215
7 kW 6386 kWh 4470 kWh 1916 kWh £1,236 £192 £1,428 £14,894 10.4 yrs £13,667
8 kW 7298 kWh 5109 kWh 2190 kWh £1,413 £219 £1,632 £16,522 10.1 yrs £16,120

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: £1,044, Upfront: £13,389, Break-even: 12.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1825 kWh 1332 kWh 493 kWh £368 £49 £418 £8,506 20.4 yrs £-152
3 kW 2737 kWh 1998 kWh 739 kWh £553 £74 £627 £10,133 16.2 yrs £2,397
4 kW 3649 kWh 2664 kWh 985 kWh £737 £99 £835 £11,761 14.1 yrs £4,946
5 kW 4562 kWh 3330 kWh 1232 kWh £921 £123 £1,044 £13,389 12.8 yrs £7,496
6 kW 5474 kWh 3996 kWh 1478 kWh £1,105 £148 £1,253 £15,017 12.0 yrs £10,045
7 kW 6386 kWh 4662 kWh 1724 kWh £1,289 £172 £1,462 £16,644 11.4 yrs £12,594
8 kW 7298 kWh 5328 kWh 1971 kWh £1,474 £197 £1,671 £18,272 10.9 yrs £15,143

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: £1,060, Upfront: £15,139, Break-even: 14.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1825 kWh 1368 kWh 456 kWh £379 £46 £424 £10,256 24.2 yrs £-1,773
3 kW 2737 kWh 2053 kWh 684 kWh £568 £68 £636 £11,883 18.7 yrs £841
4 kW 3649 kWh 2737 kWh 912 kWh £757 £91 £848 £13,511 15.9 yrs £3,454
5 kW 4562 kWh 3421 kWh 1140 kWh £946 £114 £1,060 £15,139 14.3 yrs £6,068
6 kW 5474 kWh 4105 kWh 1368 kWh £1,136 £137 £1,272 £16,767 13.2 yrs £8,681
7 kW 6386 kWh 4790 kWh 1597 kWh £1,325 £160 £1,484 £18,394 12.4 yrs £11,295
8 kW 7298 kWh 5474 kWh 1825 kWh £1,514 £182 £1,697 £20,022 11.8 yrs £13,909

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: £1,076, Upfront: £17,589, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1825 kWh 1405 kWh 420 kWh £389 £42 £431 £12,706 29.5 yrs £-4,094
3 kW 2737 kWh 2107 kWh 629 kWh £583 £63 £646 £14,333 22.2 yrs £-1,416
4 kW 3649 kWh 2810 kWh 839 kWh £777 £84 £861 £15,961 18.5 yrs £1,262
5 kW 4562 kWh 3512 kWh 1049 kWh £972 £105 £1,076 £17,589 16.3 yrs £3,940
6 kW 5474 kWh 4215 kWh 1259 kWh £1,166 £126 £1,292 £19,217 14.9 yrs £6,618
7 kW 6386 kWh 4917 kWh 1469 kWh £1,360 £147 £1,507 £20,844 13.8 yrs £9,296
8 kW 7298 kWh 5620 kWh 1679 kWh £1,554 £168 £1,722 £22,472 13.0 yrs £11,974

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 Halton

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 WA88

Figures below are tailored to WA88 — click through for full league tables.

Solar Payback Index Rank #1575 of 2996
10.5 years (UK avg 10.8 years)
~£778 /yr • £8,139 upfront
Standing-Charge Drag Rank #2546 of 2996
33.2% (UK avg 26.6%) drag on savings
£258 fixed • ~£778 /yr value
Aspect Penalty View ranking →
East −19.9% West −20.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in WA88

Monthly generation per kilowatt of solar panels

kWh 30 Jan 48 Feb 80 Mar 106 Apr 118 May 112 Jun 111 Jul 102 Aug 83 Sep 57 Oct 37 Nov 27 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 46.2% 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 140 kWh in winter, or 304 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/day
Local Sunshine
912kWh/kW
A 1 kW system generates ~912 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

No EPC data available for this outcode

Coverage

Halton (100%)

Areas Covered

Bankfield

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 Wales and Mersey

WA8 (Halton)
≈2.3 km away
Local sunshine: ~912 kWh/kWp · +0% vs WA88
L26 (Knowsley)
≈4.3 km away
Local sunshine: ~915 kWh/kWp · +0% vs WA88
L27 (Liverpool)
≈5.2 km away
Local sunshine: ~921 kWh/kWp · +1% vs WA88
L35 (Knowsley)
≈5.6 km away
Local sunshine: ~914 kWh/kWp · +0% vs WA88
L24 (Liverpool)
≈5.7 km away
Local sunshine: ~913 kWh/kWp · +0% vs WA88
WA7 (Halton)
≈6.3 km away
Local sunshine: ~918 kWh/kWp · +1% vs WA88

Similar sunshine across the UK

LA20 (Westmorland and Furness)
~912 kWh/kWp · -0% vs WA88
NE71 (Northumberland)
~912 kWh/kWp · +0% vs WA88
NE45 (Northumberland)
~912 kWh/kWp · -0% vs WA88