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Solar panel cost in Isle of Anglesey (LL63)

See realistic solar installation costs, savings and payback for LL63 (Isle of Anglesey) 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
13.0 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£942
What you save every year
Profit Over 25 Years
£11,349
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: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • 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

Costs: Battery prices are typically £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 24.43p/kWh with a 69.98p/day standing charge. Your postcode’s south-facing sunshine yield is 996 kWh/kW — 66 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 996 kWh per year on a south-facing roof. We value self-used electricity at 24.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
24.4p/kWh
Standing charge
70.0p/day
Sunshine yield (south)
996 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: £785, Upfront: £10,173, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1991 kWh 797 kWh 1195 kWh £195 £119 £314 £4,069 13.0 yrs £2,213
3 kW 2987 kWh 1195 kWh 1792 kWh £292 £179 £471 £6,104 13.0 yrs £3,319
4 kW 3983 kWh 1593 kWh 2390 kWh £389 £239 £628 £8,138 13.0 yrs £4,425
5 kW 4978 kWh 1991 kWh 2987 kWh £486 £299 £785 £10,173 13.0 yrs £5,531
6 kW 5974 kWh 2390 kWh 3584 kWh £584 £358 £942 £12,207 13.0 yrs £6,638
7 kW 6970 kWh 2788 kWh 4182 kWh £681 £418 £1,099 £14,242 13.0 yrs £7,744
8 kW 7966 kWh 3186 kWh 4779 kWh £778 £478 £1,256 £16,276 13.0 yrs £8,850

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £929, Upfront: £12,273, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1991 kWh 1195 kWh 797 kWh £292 £80 £372 £6,169 16.6 yrs £1,262
3 kW 2987 kWh 1792 kWh 1195 kWh £438 £119 £557 £8,204 14.7 yrs £2,943
4 kW 3983 kWh 2390 kWh 1593 kWh £584 £159 £743 £10,238 13.8 yrs £4,624
5 kW 4978 kWh 2987 kWh 1991 kWh £730 £199 £929 £12,273 13.2 yrs £6,305
6 kW 5974 kWh 3584 kWh 2390 kWh £876 £239 £1,115 £14,307 12.8 yrs £7,986
7 kW 6970 kWh 4182 kWh 2788 kWh £1,022 £279 £1,300 £16,342 12.6 yrs £9,667
8 kW 7966 kWh 4779 kWh 3186 kWh £1,168 £319 £1,486 £18,376 12.4 yrs £11,348

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,001, Upfront: £13,673, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1991 kWh 1394 kWh 597 kWh £341 £60 £400 £7,569 18.9 yrs £437
3 kW 2987 kWh 2091 kWh 896 kWh £511 £90 £600 £9,604 16.0 yrs £2,405
4 kW 3983 kWh 2788 kWh 1195 kWh £681 £119 £801 £11,638 14.5 yrs £4,373
5 kW 4978 kWh 3485 kWh 1494 kWh £851 £149 £1,001 £13,673 13.7 yrs £6,342
6 kW 5974 kWh 4182 kWh 1792 kWh £1,022 £179 £1,201 £15,707 13.1 yrs £8,310
7 kW 6970 kWh 4879 kWh 2091 kWh £1,192 £209 £1,401 £17,742 12.7 yrs £10,279
8 kW 7966 kWh 5576 kWh 2390 kWh £1,362 £239 £1,601 £19,776 12.4 yrs £12,247

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,022, Upfront: £15,423, 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 1991 kWh 1454 kWh 538 kWh £355 £54 £409 £9,319 22.8 yrs £-1,141
3 kW 2987 kWh 2181 kWh 807 kWh £533 £81 £613 £11,354 18.5 yrs £914
4 kW 3983 kWh 2907 kWh 1075 kWh £710 £108 £818 £13,388 16.4 yrs £2,968
5 kW 4978 kWh 3634 kWh 1344 kWh £888 £134 £1,022 £15,423 15.1 yrs £5,023
6 kW 5974 kWh 4361 kWh 1613 kWh £1,065 £161 £1,227 £17,457 14.2 yrs £7,077
7 kW 6970 kWh 5088 kWh 1882 kWh £1,243 £188 £1,431 £19,492 13.6 yrs £9,132
8 kW 7966 kWh 5815 kWh 2151 kWh £1,421 £215 £1,636 £21,526 13.2 yrs £11,187

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,037, Upfront: £17,173, Break-even: 16.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1991 kWh 1494 kWh 498 kWh £365 £50 £415 £11,069 26.7 yrs £-2,776
3 kW 2987 kWh 2240 kWh 747 kWh £547 £75 £622 £13,104 21.1 yrs £-664
4 kW 3983 kWh 2987 kWh 996 kWh £730 £100 £829 £15,138 18.3 yrs £1,448
5 kW 4978 kWh 3734 kWh 1245 kWh £912 £124 £1,037 £17,173 16.6 yrs £3,560
6 kW 5974 kWh 4481 kWh 1494 kWh £1,095 £149 £1,244 £19,207 15.4 yrs £5,672
7 kW 6970 kWh 5227 kWh 1742 kWh £1,277 £174 £1,451 £21,242 14.6 yrs £7,784
8 kW 7966 kWh 5974 kWh 1991 kWh £1,459 £199 £1,659 £23,276 14.0 yrs £9,896

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,051, Upfront: £19,623, Break-even: 18.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1991 kWh 1533 kWh 458 kWh £375 £46 £420 £13,519 32.2 yrs £-5,111
3 kW 2987 kWh 2300 kWh 687 kWh £562 £69 £631 £15,554 24.7 yrs £-2,941
4 kW 3983 kWh 3067 kWh 916 kWh £749 £92 £841 £17,588 20.9 yrs £-772
5 kW 4978 kWh 3833 kWh 1145 kWh £937 £115 £1,051 £19,623 18.7 yrs £1,398
6 kW 5974 kWh 4600 kWh 1374 kWh £1,124 £137 £1,261 £21,657 17.2 yrs £3,567
7 kW 6970 kWh 5367 kWh 1603 kWh £1,311 £160 £1,471 £23,692 16.1 yrs £5,737
8 kW 7966 kWh 6133 kWh 1832 kWh £1,498 £183 £1,682 £25,726 15.3 yrs £7,906

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, 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.

Insights for LL63

Figures below are tailored to LL63 — click through for full league tables.

Big-Roof Britain Rank #532 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #421 of 2997
11.6 years (UK avg 12.6 years)
~£1,054 /yr • £12,207 upfront
Standing-Charge Drag Rank #1779 of 2997
24.6% (UK avg 24.6%) drag on savings
£259 fixed • ~£1,054 /yr value
Aspect Penalty View ranking →
East −20.0% West −22.7%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL63

Monthly generation per kilowatt of solar panels

kWh 32 Jan 53 Feb 87 Mar 116 Apr 133 May 128 Jun 124 Jul 112 Aug 88 Sep 60 Oct 36 Nov 26 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 44.6% 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 37 kWh per month; the average month produces around 83 kWh. So a typical 4 kW home system would generate roughly 148 kWh in winter, or 332 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
24.43p/kWh
Daily Fixed Charge
69.98p/day
Local Sunshine
996kWh/kW
A 1 kW system generates ~996 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: 56% • Flats: 7% • Bungalows: 38% Based on 619 properties

Coverage

Isle of Anglesey (100%)

Areas Covered

Bro Aberffraw, Crigyll, Cefni

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q1 2026

Installation costs: MCS certified installer data, March 2025

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

LL64 (Isle of Anglesey)
≈3.3 km away
Local sunshine: ~989 kWh/kWp · -1% vs LL63
LL62 (Isle of Anglesey)
≈5.9 km away
Local sunshine: ~986 kWh/kWp · -1% vs LL63
LL77 (Isle of Anglesey)
≈11.2 km away
Local sunshine: ~966 kWh/kWp · -3% vs LL63
LL60 (Isle of Anglesey)
≈13.1 km away
Local sunshine: ~907 kWh/kWp · -9% vs LL63
LL65 (Isle of Anglesey)
≈13.1 km away
Local sunshine: ~1,025 kWh/kWp · +3% vs LL63
LL71 (Isle of Anglesey)
≈13.2 km away
Local sunshine: ~992 kWh/kWp · -0% vs LL63

Similar sunshine across the UK

GU22 (Woking)
~996 kWh/kWp · +0% vs LL63
TW4 (Hounslow)
~996 kWh/kWp · +0% vs LL63
W14 (Hammersmith and Fulham)
~996 kWh/kWp · -0% vs LL63