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Solar panel cost in Isle of Anglesey (LL64)

See realistic solar installation costs, savings and payback for LL64 (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
9.6 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£1,013
What you save every year
Profit Over 25 Years
£15,554
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 989 kWh/kW — 59 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 989 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)
989 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: £844, Upfront: £8,139, Break-even: 9.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1978 kWh 791 kWh 1187 kWh £219 £119 £338 £3,256 9.6 yrs £3,497
3 kW 2968 kWh 1187 kWh 1781 kWh £328 £178 £506 £4,883 9.6 yrs £5,245
4 kW 3957 kWh 1583 kWh 2374 kWh £438 £237 £675 £6,511 9.6 yrs £6,993
5 kW 4946 kWh 1978 kWh 2968 kWh £547 £297 £844 £8,139 9.6 yrs £8,742
6 kW 5935 kWh 2374 kWh 3561 kWh £657 £356 £1,013 £9,767 9.6 yrs £10,490
7 kW 6925 kWh 2770 kWh 4155 kWh £766 £415 £1,182 £11,394 9.6 yrs £12,238
8 kW 7914 kWh 3166 kWh 4748 kWh £876 £475 £1,350 £13,022 9.6 yrs £13,987

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: £1,019, Upfront: £10,239, Break-even: 10.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1978 kWh 1187 kWh 791 kWh £328 £79 £407 £5,356 13.1 yrs £2,794
3 kW 2968 kWh 1781 kWh 1187 kWh £493 £119 £611 £6,983 11.4 yrs £5,241
4 kW 3957 kWh 2374 kWh 1583 kWh £657 £158 £815 £8,611 10.6 yrs £7,688
5 kW 4946 kWh 2968 kWh 1978 kWh £821 £198 £1,019 £10,239 10.1 yrs £10,136
6 kW 5935 kWh 3561 kWh 2374 kWh £985 £237 £1,222 £11,867 9.7 yrs £12,583
7 kW 6925 kWh 4155 kWh 2770 kWh £1,149 £277 £1,426 £13,494 9.5 yrs £15,030
8 kW 7914 kWh 4748 kWh 3166 kWh £1,313 £317 £1,630 £15,122 9.3 yrs £17,477

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: £1,106, Upfront: £11,639, 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 1978 kWh 1385 kWh 594 kWh £383 £59 £442 £6,756 15.3 yrs £2,093
3 kW 2968 kWh 2077 kWh 890 kWh £575 £89 £664 £8,383 12.6 yrs £4,890
4 kW 3957 kWh 2770 kWh 1187 kWh £766 £119 £885 £10,011 11.3 yrs £7,686
5 kW 4946 kWh 3462 kWh 1484 kWh £958 £148 £1,106 £11,639 10.5 yrs £10,483
6 kW 5935 kWh 4155 kWh 1781 kWh £1,149 £178 £1,327 £13,267 10.0 yrs £13,279
7 kW 6925 kWh 4847 kWh 2077 kWh £1,341 £208 £1,548 £14,894 9.6 yrs £16,076
8 kW 7914 kWh 5540 kWh 2374 kWh £1,532 £237 £1,770 £16,522 9.3 yrs £18,872

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: £1,132, Upfront: £13,389, Break-even: 11.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1978 kWh 1444 kWh 534 kWh £399 £53 £453 £8,506 18.8 yrs £553
3 kW 2968 kWh 2166 kWh 801 kWh £599 £80 £679 £10,133 14.9 yrs £3,454
4 kW 3957 kWh 2889 kWh 1068 kWh £799 £107 £906 £11,761 13.0 yrs £6,355
5 kW 4946 kWh 3611 kWh 1335 kWh £999 £134 £1,132 £13,389 11.8 yrs £9,257
6 kW 5935 kWh 4333 kWh 1603 kWh £1,198 £160 £1,359 £15,017 11.1 yrs £12,158
7 kW 6925 kWh 5055 kWh 1870 kWh £1,398 £187 £1,585 £16,644 10.5 yrs £15,059
8 kW 7914 kWh 5777 kWh 2137 kWh £1,598 £214 £1,812 £18,272 10.1 yrs £17,961

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: £1,150, Upfront: £15,139, 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 1978 kWh 1484 kWh 495 kWh £410 £49 £460 £10,256 22.3 yrs £-1,058
3 kW 2968 kWh 2226 kWh 742 kWh £616 £74 £690 £11,883 17.2 yrs £1,914
4 kW 3957 kWh 2968 kWh 989 kWh £821 £99 £920 £13,511 14.7 yrs £4,885
5 kW 4946 kWh 3710 kWh 1237 kWh £1,026 £124 £1,150 £15,139 13.2 yrs £7,856
6 kW 5935 kWh 4452 kWh 1484 kWh £1,231 £148 £1,380 £16,767 12.2 yrs £10,827
7 kW 6925 kWh 5194 kWh 1731 kWh £1,437 £173 £1,610 £18,394 11.4 yrs £13,799
8 kW 7914 kWh 5935 kWh 1978 kWh £1,642 £198 £1,840 £20,022 10.9 yrs £16,770

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: £1,167, Upfront: £17,589, 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 1978 kWh 1523 kWh 455 kWh £421 £46 £467 £12,706 27.2 yrs £-3,368
3 kW 2968 kWh 2285 kWh 683 kWh £632 £68 £700 £14,333 20.5 yrs £-327
4 kW 3957 kWh 3047 kWh 910 kWh £843 £91 £934 £15,961 17.1 yrs £2,714
5 kW 4946 kWh 3809 kWh 1138 kWh £1,053 £114 £1,167 £17,589 15.1 yrs £5,755
6 kW 5935 kWh 4570 kWh 1365 kWh £1,264 £137 £1,401 £19,217 13.7 yrs £8,797
7 kW 6925 kWh 5332 kWh 1593 kWh £1,475 £159 £1,634 £20,844 12.8 yrs £11,838
8 kW 7914 kWh 6094 kWh 1820 kWh £1,686 £182 £1,868 £22,472 12.0 yrs £14,879

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 Isle of Anglesey

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 LL64

Figures below are tailored to LL64 — click through for full league tables.

Big-Roof Britain Rank #42 of 2182
7.1 kWp (UK avg 5.1 kWp)
~15 panels (≈430 W)
Solar Payback Index Rank #368 of 2996
9.6 years (UK avg 10.8 years)
~£1,013 /yr • £9,767 upfront
Standing-Charge Drag Rank #1515 of 2996
25.5% (UK avg 26.6%) drag on savings
£258 fixed • ~£1,013 /yr value
Aspect Penalty View ranking →
East −20.3% West −23.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL64

Monthly generation per kilowatt of solar panels

kWh 32 Jan 52 Feb 87 Mar 115 Apr 132 May 128 Jun 123 Jul 112 Aug 87 Sep 60 Oct 36 Nov 26 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 44.3% 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 82 kWh. So a typical 4 kW home system would generate roughly 146 kWh in winter, or 330 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/day
Local Sunshine
989kWh/kW
A 1 kW system generates ~989 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: 58% • Flats: 16% • Bungalows: 25% Based on 463 properties

Coverage

Isle of Anglesey (100%)

Areas Covered

Crigyll, Cefni

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

LL63 (Isle of Anglesey)
≈3.3 km away
Local sunshine: ~996 kWh/kWp · +1% vs LL64
LL62 (Isle of Anglesey)
≈9.2 km away
Local sunshine: ~986 kWh/kWp · -0% vs LL64
LL65 (Isle of Anglesey)
≈10.6 km away
Local sunshine: ~1,025 kWh/kWp · +4% vs LL64
LL77 (Isle of Anglesey)
≈14.3 km away
Local sunshine: ~966 kWh/kWp · -2% vs LL64
LL71 (Isle of Anglesey)
≈14.8 km away
Local sunshine: ~992 kWh/kWp · +0% vs LL64
LL60 (Isle of Anglesey)
≈16.4 km away
Local sunshine: ~907 kWh/kWp · -8% vs LL64

Similar sunshine across the UK

W2 (Westminster)
~989 kWh/kWp · -0% vs LL64
W1H (Westminster)
~989 kWh/kWp · -0% vs LL64
W1U (Westminster)
~989 kWh/kWp · -0% vs LL64