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Solar panel cost in Sefton (PR8)

See realistic solar installation costs, savings and payback for PR8 (Sefton) 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
9.8 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£999
What you save every year
Profit Over 25 Years
£15,197
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 975 kWh/kW — 45 above the regional median (930).

Read the full story

A typical roof here lands around 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 975 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)
975 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: £832, Upfront: £8,139, Break-even: 9.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 780 kWh 1170 kWh £216 £117 £333 £3,256 9.8 yrs £3,401
3 kW 2926 kWh 1170 kWh 1756 kWh £324 £176 £499 £4,883 9.8 yrs £5,102
4 kW 3901 kWh 1560 kWh 2341 kWh £432 £234 £666 £6,511 9.8 yrs £6,803
5 kW 4876 kWh 1951 kWh 2926 kWh £540 £293 £832 £8,139 9.8 yrs £8,504
6 kW 5852 kWh 2341 kWh 3511 kWh £647 £351 £999 £9,767 9.8 yrs £10,204
7 kW 6827 kWh 2731 kWh 4096 kWh £755 £410 £1,165 £11,394 9.8 yrs £11,905
8 kW 7802 kWh 3121 kWh 4681 kWh £863 £468 £1,331 £13,022 9.8 yrs £13,606

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: £1,004, Upfront: £10,239, Break-even: 10.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1170 kWh 780 kWh £324 £78 £402 £5,356 13.3 yrs £2,679
3 kW 2926 kWh 1756 kWh 1170 kWh £486 £117 £603 £6,983 11.6 yrs £5,069
4 kW 3901 kWh 2341 kWh 1560 kWh £647 £156 £803 £8,611 10.7 yrs £7,459
5 kW 4876 kWh 2926 kWh 1951 kWh £809 £195 £1,004 £10,239 10.2 yrs £9,848
6 kW 5852 kWh 3511 kWh 2341 kWh £971 £234 £1,205 £11,867 9.8 yrs £12,238
7 kW 6827 kWh 4096 kWh 2731 kWh £1,133 £273 £1,406 £13,494 9.6 yrs £14,628
8 kW 7802 kWh 4681 kWh 3121 kWh £1,295 £312 £1,607 £15,122 9.4 yrs £17,018

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: £1,090, Upfront: £11,639, Break-even: 10.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1365 kWh 585 kWh £378 £59 £436 £6,756 15.5 yrs £1,968
3 kW 2926 kWh 2048 kWh 878 kWh £567 £88 £654 £8,383 12.8 yrs £4,703
4 kW 3901 kWh 2731 kWh 1170 kWh £755 £117 £872 £10,011 11.5 yrs £7,437
5 kW 4876 kWh 3414 kWh 1463 kWh £944 £146 £1,090 £11,639 10.7 yrs £10,171
6 kW 5852 kWh 4096 kWh 1756 kWh £1,133 £176 £1,309 £13,267 10.1 yrs £12,905
7 kW 6827 kWh 4779 kWh 2048 kWh £1,322 £205 £1,527 £14,894 9.8 yrs £15,639
8 kW 7802 kWh 5462 kWh 2341 kWh £1,511 £234 £1,745 £16,522 9.5 yrs £18,373

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: £1,116, Upfront: £13,389, 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 1951 kWh 1424 kWh 527 kWh £394 £53 £447 £8,506 19.0 yrs £425
3 kW 2926 kWh 2136 kWh 790 kWh £591 £79 £670 £10,133 15.1 yrs £3,263
4 kW 3901 kWh 2848 kWh 1053 kWh £788 £105 £893 £11,761 13.2 yrs £6,100
5 kW 4876 kWh 3560 kWh 1317 kWh £985 £132 £1,116 £13,389 12.0 yrs £8,938
6 kW 5852 kWh 4272 kWh 1580 kWh £1,182 £158 £1,340 £15,017 11.2 yrs £11,775
7 kW 6827 kWh 4984 kWh 1843 kWh £1,379 £184 £1,563 £16,644 10.7 yrs £14,613
8 kW 7802 kWh 5696 kWh 2107 kWh £1,575 £211 £1,786 £18,272 10.2 yrs £17,450

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: £1,134, Upfront: £15,139, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1463 kWh 488 kWh £405 £49 £453 £10,256 22.6 yrs £-1,187
3 kW 2926 kWh 2194 kWh 731 kWh £607 £73 £680 £11,883 17.5 yrs £1,719
4 kW 3901 kWh 2926 kWh 975 kWh £809 £98 £907 £13,511 14.9 yrs £4,626
5 kW 4876 kWh 3657 kWh 1219 kWh £1,012 £122 £1,134 £15,139 13.4 yrs £7,532
6 kW 5852 kWh 4389 kWh 1463 kWh £1,214 £146 £1,360 £16,767 12.3 yrs £10,438
7 kW 6827 kWh 5120 kWh 1707 kWh £1,416 £171 £1,587 £18,394 11.6 yrs £13,345
8 kW 7802 kWh 5852 kWh 1951 kWh £1,619 £195 £1,814 £20,022 11.0 yrs £16,251

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: £1,151, Upfront: £17,589, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1502 kWh 449 kWh £415 £45 £460 £12,706 27.6 yrs £-3,499
3 kW 2926 kWh 2253 kWh 673 kWh £623 £67 £690 £14,333 20.8 yrs £-524
4 kW 3901 kWh 3004 kWh 897 kWh £831 £90 £921 £15,961 17.3 yrs £2,451
5 kW 4876 kWh 3755 kWh 1122 kWh £1,039 £112 £1,151 £17,589 15.3 yrs £5,427
6 kW 5852 kWh 4506 kWh 1346 kWh £1,246 £135 £1,381 £19,217 13.9 yrs £8,402
7 kW 6827 kWh 5257 kWh 1570 kWh £1,454 £157 £1,611 £20,844 12.9 yrs £11,377
8 kW 7802 kWh 6008 kWh 1795 kWh £1,662 £179 £1,841 £22,472 12.2 yrs £14,352

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 Sefton

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 PR8

Figures below are tailored to PR8 — click through for full league tables.

Big-Roof Britain Rank #763 of 2182
5.3 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #685 of 2996
9.8 years (UK avg 10.8 years)
~£998 /yr • £9,767 upfront
Standing-Charge Drag Rank #1595 of 2996
25.9% (UK avg 26.6%) drag on savings
£258 fixed • ~£998 /yr value
Aspect Penalty View ranking →
East −20.6% West −22.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PR8

Monthly generation per kilowatt of solar panels

kWh 31 Jan 53 Feb 86 Mar 115 Apr 127 May 120 Jun 120 Jul 110 Aug 88 Sep 59 Oct 38 Nov 28 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 38 kWh per month; the average month produces around 81 kWh. So a typical 4 kW home system would generate roughly 150 kWh in winter, or 325 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/day
Local Sunshine
975kWh/kW
A 1 kW system generates ~975 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 63% • Flats: 31% • Bungalows: 6% Based on 14,312 properties

Coverage

Sefton (97%)|West Lancashire (3%)

Areas Covered

Kew, Duke's, Ainsdale, Birkdale, Norwood, Rural West, Cambridge, Harington

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

PR9 (Sefton)
≈3.7 km away
Local sunshine: ~975 kWh/kWp · +0% vs PR8
L37 (Sefton)
≈8.7 km away
Local sunshine: ~969 kWh/kWp · -1% vs PR8
L38 (Sefton)
≈11.9 km away
Local sunshine: ~978 kWh/kWp · +0% vs PR8
L31 (Sefton)
≈13.3 km away
Local sunshine: ~938 kWh/kWp · -4% vs PR8
L29 (Sefton)
≈13.4 km away
Local sunshine: ~944 kWh/kWp · -3% vs PR8
L23 (Sefton)
≈15.3 km away
Local sunshine: ~953 kWh/kWp · -2% vs PR8

Similar sunshine across the UK

BS37 (South Gloucestershire)
~975 kWh/kWp · -0% vs PR8
DN32 (North East Lincolnshire)
~975 kWh/kWp · +0% vs PR8
NG32 (South Kesteven)
~975 kWh/kWp · +0% vs PR8