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Solar panel cost in Isle of Anglesey (LL67)

See realistic solar installation costs, savings and payback for LL67 (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
£1,020
What you save every year
Profit Over 25 Years
£15,733
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 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 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)
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: £850, 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 1992 kWh 797 kWh 1196 kWh £220 £120 £340 £3,256 9.6 yrs £3,544
3 kW 2989 kWh 1196 kWh 1793 kWh £331 £179 £510 £4,883 9.6 yrs £5,317
4 kW 3985 kWh 1594 kWh 2391 kWh £441 £239 £680 £6,511 9.6 yrs £7,089
5 kW 4981 kWh 1992 kWh 2989 kWh £551 £299 £850 £8,139 9.6 yrs £8,861
6 kW 5978 kWh 2391 kWh 3586 kWh £661 £359 £1,020 £9,767 9.6 yrs £10,633
7 kW 6974 kWh 2790 kWh 4184 kWh £772 £418 £1,190 £11,394 9.6 yrs £12,406
8 kW 7970 kWh 3188 kWh 4782 kWh £882 £478 £1,360 £13,022 9.6 yrs £14,178

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: £1,026, Upfront: £10,239, Break-even: 10.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1992 kWh 1196 kWh 797 kWh £331 £80 £410 £5,356 13.1 yrs £2,852
3 kW 2989 kWh 1793 kWh 1196 kWh £496 £120 £616 £6,983 11.3 yrs £5,328
4 kW 3985 kWh 2391 kWh 1594 kWh £661 £159 £821 £8,611 10.5 yrs £7,804
5 kW 4981 kWh 2989 kWh 1992 kWh £827 £199 £1,026 £10,239 10.0 yrs £10,280
6 kW 5978 kWh 3586 kWh 2391 kWh £992 £239 £1,231 £11,867 9.6 yrs £12,756
7 kW 6974 kWh 4184 kWh 2790 kWh £1,157 £279 £1,436 £13,494 9.4 yrs £15,232
8 kW 7970 kWh 4782 kWh 3188 kWh £1,323 £319 £1,642 £15,122 9.2 yrs £17,708

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: £1,114, Upfront: £11,639, Break-even: 10.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1992 kWh 1395 kWh 598 kWh £386 £60 £446 £6,756 15.2 yrs £2,156
3 kW 2989 kWh 2092 kWh 897 kWh £579 £90 £668 £8,383 12.5 yrs £4,984
4 kW 3985 kWh 2790 kWh 1196 kWh £772 £120 £891 £10,011 11.2 yrs £7,811
5 kW 4981 kWh 3487 kWh 1494 kWh £964 £149 £1,114 £11,639 10.4 yrs £10,639
6 kW 5978 kWh 4184 kWh 1793 kWh £1,157 £179 £1,337 £13,267 9.9 yrs £13,467
7 kW 6974 kWh 4882 kWh 2092 kWh £1,350 £209 £1,559 £14,894 9.6 yrs £16,295
8 kW 7970 kWh 5579 kWh 2391 kWh £1,543 £239 £1,782 £16,522 9.3 yrs £19,123

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: £1,140, Upfront: £13,389, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1992 kWh 1455 kWh 538 kWh £402 £54 £456 £8,506 18.6 yrs £617
3 kW 2989 kWh 2182 kWh 807 kWh £603 £81 £684 £10,133 14.8 yrs £3,550
4 kW 3985 kWh 2909 kWh 1076 kWh £805 £108 £912 £11,761 12.9 yrs £6,484
5 kW 4981 kWh 3636 kWh 1345 kWh £1,006 £134 £1,140 £13,389 11.7 yrs £9,417
6 kW 5978 kWh 4364 kWh 1614 kWh £1,207 £161 £1,368 £15,017 11.0 yrs £12,351
7 kW 6974 kWh 5091 kWh 1883 kWh £1,408 £188 £1,596 £16,644 10.4 yrs £15,284
8 kW 7970 kWh 5818 kWh 2152 kWh £1,609 £215 £1,824 £18,272 10.0 yrs £18,217

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: £1,158, Upfront: £15,139, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1992 kWh 1494 kWh 498 kWh £413 £50 £463 £10,256 22.1 yrs £-992
3 kW 2989 kWh 2242 kWh 747 kWh £620 £75 £695 £11,883 17.1 yrs £2,011
4 kW 3985 kWh 2989 kWh 996 kWh £827 £100 £926 £13,511 14.6 yrs £5,015
5 kW 4981 kWh 3736 kWh 1245 kWh £1,033 £125 £1,158 £15,139 13.1 yrs £8,019
6 kW 5978 kWh 4483 kWh 1494 kWh £1,240 £149 £1,389 £16,767 12.1 yrs £11,023
7 kW 6974 kWh 5230 kWh 1743 kWh £1,447 £174 £1,621 £18,394 11.3 yrs £14,027
8 kW 7970 kWh 5978 kWh 1992 kWh £1,653 £199 £1,853 £20,022 10.8 yrs £17,030

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: £1,175, Upfront: £17,589, Break-even: 15.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1992 kWh 1534 kWh 458 kWh £424 £46 £470 £12,706 27.0 yrs £-3,302
3 kW 2989 kWh 2301 kWh 687 kWh £637 £69 £705 £14,333 20.3 yrs £-227
4 kW 3985 kWh 3068 kWh 917 kWh £849 £92 £940 £15,961 17.0 yrs £2,847
5 kW 4981 kWh 3836 kWh 1146 kWh £1,061 £115 £1,175 £17,589 15.0 yrs £5,921
6 kW 5978 kWh 4603 kWh 1375 kWh £1,273 £137 £1,411 £19,217 13.6 yrs £8,995
7 kW 6974 kWh 5370 kWh 1604 kWh £1,485 £160 £1,646 £20,844 12.7 yrs £12,069
8 kW 7970 kWh 6137 kWh 1833 kWh £1,697 £183 £1,881 £22,472 11.9 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.

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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Insights for LL67

Figures below are tailored to LL67 — click through for full league tables.

Big-Roof Britain Rank #232 of 2182
6.1 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #370 of 2996
9.6 years (UK avg 10.8 years)
~£1,020 /yr • £9,767 upfront
Standing-Charge Drag Rank #1475 of 2996
25.3% (UK avg 26.6%) drag on savings
£258 fixed • ~£1,020 /yr value
Aspect Penalty View ranking →
East −19.6% West −23.7%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL67

Monthly generation per kilowatt of solar panels

kWh 32 Jan 52 Feb 87 Mar 118 Apr 134 May 129 Jun 124 Jul 113 Aug 88 Sep 59 Oct 36 Nov 25 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 43.8% 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 36 kWh per month; the average month produces around 83 kWh. So a typical 4 kW home system would generate roughly 145 kWh in winter, or 332 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/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: 9% • Bungalows: 34% Based on 591 properties

Coverage

Isle of Anglesey (100%)

Areas Covered

Twrcelyn, Talybolion

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

LL66 (Isle of Anglesey)
≈4.7 km away
Local sunshine: ~996 kWh/kWp · -0% vs LL67
LL68 (Isle of Anglesey)
≈6.7 km away
Local sunshine: ~1,005 kWh/kWp · +1% vs LL67
LL69 (Isle of Anglesey)
≈9.5 km away
Local sunshine: ~976 kWh/kWp · -2% vs LL67
LL71 (Isle of Anglesey)
≈10.5 km away
Local sunshine: ~992 kWh/kWp · -0% vs LL67
LL70 (Isle of Anglesey)
≈12.5 km away
Local sunshine: ~945 kWh/kWp · -5% vs LL67
LL72 (Isle of Anglesey)
≈15.8 km away
Local sunshine: ~934 kWh/kWp · -6% vs LL67

Similar sunshine across the UK

AL5 (St Albans)
~996 kWh/kWp · -0% vs LL67
KT12 (Elmbridge)
~996 kWh/kWp · +0% vs LL67
KT3 (Kingston upon Thames)
~996 kWh/kWp · +0% vs LL67