Solar explained to clever people by people who are not trying to be clever
Home Regions
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in LL59 (Isle of Anglesey)

See if solar pays off for you in Isle of Anglesey — price, savings and payback in under a minute (official UK data).

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
14.1 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£865
What you save every year
Profit Over 25 Years
£9,410
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 27.72p/kWh with a 69.95p/day standing charge. Your postcode’s south-facing sunshine yield is 843 kWh/kW — 87 below 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 843 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
70.0p/day
Sunshine yield (south)
843 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: £721, Upfront: £10,173, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 675 kWh 1012 kWh £187 £101 £288 £4,069 14.1 yrs £1,696
3 kW 2530 kWh 1012 kWh 1518 kWh £281 £152 £432 £6,104 14.1 yrs £2,543
4 kW 3374 kWh 1349 kWh 2024 kWh £374 £202 £576 £8,138 14.1 yrs £3,391
5 kW 4217 kWh 1687 kWh 2530 kWh £468 £253 £721 £10,173 14.1 yrs £4,239
6 kW 5060 kWh 2024 kWh 3036 kWh £561 £304 £865 £12,207 14.1 yrs £5,087
7 kW 5904 kWh 2361 kWh 3542 kWh £655 £354 £1,009 £14,242 14.1 yrs £5,935
8 kW 6747 kWh 2699 kWh 4048 kWh £748 £405 £1,153 £16,276 14.1 yrs £6,783

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: £870, Upfront: £12,273, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 1012 kWh 675 kWh £281 £67 £348 £6,169 17.7 yrs £791
3 kW 2530 kWh 1518 kWh 1012 kWh £421 £101 £522 £8,204 15.7 yrs £2,237
4 kW 3374 kWh 2024 kWh 1349 kWh £561 £135 £696 £10,238 14.7 yrs £3,682
5 kW 4217 kWh 2530 kWh 1687 kWh £701 £169 £870 £12,273 14.1 yrs £5,128
6 kW 5060 kWh 3036 kWh 2024 kWh £842 £202 £1,044 £14,307 13.7 yrs £6,574
7 kW 5904 kWh 3542 kWh 2361 kWh £982 £236 £1,218 £16,342 13.4 yrs £8,019
8 kW 6747 kWh 4048 kWh 2699 kWh £1,122 £270 £1,392 £18,376 13.2 yrs £9,465

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: £945, Upfront: £13,673, Break-even: 14.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 1181 kWh 506 kWh £327 £51 £378 £7,569 20.0 yrs £-11
3 kW 2530 kWh 1771 kWh 759 kWh £491 £76 £567 £9,604 16.9 yrs £1,734
4 kW 3374 kWh 2361 kWh 1012 kWh £655 £101 £756 £11,638 15.4 yrs £3,478
5 kW 4217 kWh 2952 kWh 1265 kWh £818 £127 £945 £13,673 14.5 yrs £5,223
6 kW 5060 kWh 3542 kWh 1518 kWh £982 £152 £1,134 £15,707 13.9 yrs £6,967
7 kW 5904 kWh 4133 kWh 1771 kWh £1,146 £177 £1,323 £17,742 13.4 yrs £8,712
8 kW 6747 kWh 4723 kWh 2024 kWh £1,309 £202 £1,512 £19,776 13.1 yrs £10,456

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: £967, Upfront: £15,423, Break-even: 15.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 1231 kWh 455 kWh £341 £46 £387 £9,319 24.1 yrs £-1,582
3 kW 2530 kWh 1847 kWh 683 kWh £512 £68 £580 £11,354 19.6 yrs £253
4 kW 3374 kWh 2463 kWh 911 kWh £683 £91 £774 £13,388 17.3 yrs £2,087
5 kW 4217 kWh 3078 kWh 1139 kWh £853 £114 £967 £15,423 15.9 yrs £3,921
6 kW 5060 kWh 3694 kWh 1366 kWh £1,024 £137 £1,161 £17,457 15.0 yrs £5,755
7 kW 5904 kWh 4310 kWh 1594 kWh £1,195 £159 £1,354 £19,492 14.4 yrs £7,589
8 kW 6747 kWh 4925 kWh 1822 kWh £1,365 £182 £1,547 £21,526 13.9 yrs £9,423

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: £982, Upfront: £17,173, Break-even: 17.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 1265 kWh 422 kWh £351 £42 £393 £11,069 28.2 yrs £-3,212
3 kW 2530 kWh 1898 kWh 633 kWh £526 £63 £589 £13,104 22.2 yrs £-1,318
4 kW 3374 kWh 2530 kWh 843 kWh £701 £84 £786 £15,138 19.3 yrs £576
5 kW 4217 kWh 3163 kWh 1054 kWh £877 £105 £982 £17,173 17.5 yrs £2,470
6 kW 5060 kWh 3795 kWh 1265 kWh £1,052 £127 £1,179 £19,207 16.3 yrs £4,364
7 kW 5904 kWh 4428 kWh 1476 kWh £1,227 £148 £1,375 £21,242 15.4 yrs £6,258
8 kW 6747 kWh 5060 kWh 1687 kWh £1,403 £169 £1,571 £23,276 14.8 yrs £8,152

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: £997, Upfront: £19,623, Break-even: 19.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1687 kWh 1299 kWh 388 kWh £360 £39 £399 £13,519 33.9 yrs £-5,543
3 kW 2530 kWh 1948 kWh 582 kWh £540 £58 £598 £15,554 26.0 yrs £-3,589
4 kW 3374 kWh 2598 kWh 776 kWh £720 £78 £798 £17,588 22.0 yrs £-1,635
5 kW 4217 kWh 3247 kWh 970 kWh £900 £97 £997 £19,623 19.7 yrs £319
6 kW 5060 kWh 3896 kWh 1164 kWh £1,080 £116 £1,196 £21,657 18.1 yrs £2,272
7 kW 5904 kWh 4546 kWh 1358 kWh £1,260 £136 £1,396 £23,692 17.0 yrs £4,226
8 kW 6747 kWh 5195 kWh 1552 kWh £1,440 £155 £1,595 £25,726 16.1 yrs £6,180

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 LL59

Figures below are tailored to LL59 — click through for full league tables.

Big-Roof Britain Rank #580 of 2182
5.5 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #2498 of 2997
12.2 years (UK avg 11.3 years)
~£999 /yr • £12,207 upfront
Standing-Charge Drag Rank #2342 of 2997
25.6% (UK avg 21.7%) drag on savings
£255 fixed • ~£999 /yr value

Your Area at a Glance

Your Electricity Rate
27.72p/kWh
Daily Fixed Charge
69.95p/day
Local Sunshine
843kWh/kW
A 1 kW system generates ~843 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: 22% • Bungalows: 21% Based on 1,667 properties

Coverage

Isle of Anglesey (93%)|Gwynedd (7%)

Areas Covered

Aethwy, Seiriol, Canol Bangor

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q4 2025

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

LL57 (Gwynedd)
≈2.7 km away
Local sunshine: ~792 kWh/kWp · -6% vs LL59
LL56 (Gwynedd)
≈5.8 km away
Local sunshine: ~873 kWh/kWp · +3% vs LL59
LL61 (Isle of Anglesey)
≈6.3 km away
Local sunshine: ~884 kWh/kWp · +5% vs LL59
LL75 (Isle of Anglesey)
≈7.0 km away
Local sunshine: ~931 kWh/kWp · +10% vs LL59
LL58 (Isle of Anglesey)
≈7.0 km away
Local sunshine: ~819 kWh/kWp · -3% vs LL59
LL60 (Isle of Anglesey)
≈7.4 km away
Local sunshine: ~907 kWh/kWp · +8% vs LL59

Similar sunshine across the UK

ML9 (South Lanarkshire)
~843 kWh/kWp · -0% vs LL59
G71 (South Lanarkshire)
~843 kWh/kWp · -0% vs LL59
TD9 (Scottish Borders)
~843 kWh/kWp · -0% vs LL59