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Solar panel cost in Conwy (LL33)

See realistic solar installation costs, savings and payback for LL33 (Conwy) 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
14.6 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£699
What you save every year
Profit Over 25 Years
£7,298
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 886 kWh/kW — 44 below the regional median (930).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 886 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)
886 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: £699, Upfront: £10,173, Break-even: 14.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 709 kWh 1063 kWh £173 £106 £280 £4,069 14.6 yrs £1,521
3 kW 2658 kWh 1063 kWh 1595 kWh £260 £160 £419 £6,104 14.6 yrs £2,282
4 kW 3545 kWh 1418 kWh 2127 kWh £346 £213 £559 £8,138 14.6 yrs £3,043
5 kW 4431 kWh 1772 kWh 2658 kWh £433 £266 £699 £10,173 14.6 yrs £3,804
6 kW 5317 kWh 2127 kWh 3190 kWh £520 £319 £839 £12,207 14.6 yrs £4,564
7 kW 6203 kWh 2481 kWh 3722 kWh £606 £372 £978 £14,242 14.6 yrs £5,325
8 kW 7089 kWh 2836 kWh 4253 kWh £693 £425 £1,118 £16,276 14.6 yrs £6,086

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: £827, Upfront: £12,273, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1063 kWh 709 kWh £260 £71 £331 £6,169 18.7 yrs £444
3 kW 2658 kWh 1595 kWh 1063 kWh £390 £106 £496 £8,204 16.5 yrs £1,717
4 kW 3545 kWh 2127 kWh 1418 kWh £520 £142 £661 £10,238 15.5 yrs £2,989
5 kW 4431 kWh 2658 kWh 1772 kWh £649 £177 £827 £12,273 14.8 yrs £4,261
6 kW 5317 kWh 3190 kWh 2127 kWh £779 £213 £992 £14,307 14.4 yrs £5,533
7 kW 6203 kWh 3722 kWh 2481 kWh £909 £248 £1,157 £16,342 14.1 yrs £6,805
8 kW 7089 kWh 4253 kWh 2836 kWh £1,039 £284 £1,323 £18,376 13.9 yrs £8,078

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: £891, Upfront: £13,673, Break-even: 15.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1241 kWh 532 kWh £303 £53 £356 £7,569 21.2 yrs £-444
3 kW 2658 kWh 1861 kWh 798 kWh £455 £80 £534 £9,604 18.0 yrs £1,084
4 kW 3545 kWh 2481 kWh 1063 kWh £606 £106 £712 £11,638 16.3 yrs £2,612
5 kW 4431 kWh 3101 kWh 1329 kWh £758 £133 £891 £13,673 15.4 yrs £4,140
6 kW 5317 kWh 3722 kWh 1595 kWh £909 £160 £1,069 £15,707 14.7 yrs £5,668
7 kW 6203 kWh 4342 kWh 1861 kWh £1,061 £186 £1,247 £17,742 14.2 yrs £7,196
8 kW 7089 kWh 4962 kWh 2127 kWh £1,212 £213 £1,425 £19,776 13.9 yrs £8,724

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: £910, Upfront: £15,423, Break-even: 17.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1294 kWh 479 kWh £316 £48 £364 £9,319 25.6 yrs £-2,041
3 kW 2658 kWh 1941 kWh 718 kWh £474 £72 £546 £11,354 20.8 yrs £-436
4 kW 3545 kWh 2588 kWh 957 kWh £632 £96 £728 £13,388 18.4 yrs £1,169
5 kW 4431 kWh 3234 kWh 1196 kWh £790 £120 £910 £15,423 17.0 yrs £2,773
6 kW 5317 kWh 3881 kWh 1436 kWh £948 £144 £1,092 £17,457 16.0 yrs £4,378
7 kW 6203 kWh 4528 kWh 1675 kWh £1,106 £167 £1,274 £19,492 15.3 yrs £5,983
8 kW 7089 kWh 5175 kWh 1914 kWh £1,264 £191 £1,456 £21,526 14.8 yrs £7,587

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: £923, Upfront: £17,173, Break-even: 18.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1329 kWh 443 kWh £325 £44 £369 £11,069 30.0 yrs £-3,688
3 kW 2658 kWh 1994 kWh 665 kWh £487 £66 £554 £13,104 23.7 yrs £-2,033
4 kW 3545 kWh 2658 kWh 886 kWh £649 £89 £738 £15,138 20.5 yrs £-377
5 kW 4431 kWh 3323 kWh 1108 kWh £812 £111 £923 £17,173 18.6 yrs £1,279
6 kW 5317 kWh 3988 kWh 1329 kWh £974 £133 £1,107 £19,207 17.3 yrs £2,935
7 kW 6203 kWh 4652 kWh 1551 kWh £1,137 £155 £1,292 £21,242 16.4 yrs £4,591
8 kW 7089 kWh 5317 kWh 1772 kWh £1,299 £177 £1,476 £23,276 15.8 yrs £6,247

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: £935, Upfront: £19,623, Break-even: 21.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1365 kWh 408 kWh £333 £41 £374 £13,519 36.1 yrs £-6,036
3 kW 2658 kWh 2047 kWh 611 kWh £500 £61 £561 £15,554 27.7 yrs £-4,329
4 kW 3545 kWh 2729 kWh 815 kWh £667 £82 £748 £17,588 23.5 yrs £-2,622
5 kW 4431 kWh 3412 kWh 1019 kWh £833 £102 £935 £19,623 21.0 yrs £-915
6 kW 5317 kWh 4094 kWh 1223 kWh £1,000 £122 £1,122 £21,657 19.3 yrs £792
7 kW 6203 kWh 4776 kWh 1427 kWh £1,167 £143 £1,310 £23,692 18.1 yrs £2,499
8 kW 7089 kWh 5459 kWh 1630 kWh £1,334 £163 £1,497 £25,726 17.2 yrs £4,206

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 LL33

Figures below are tailored to LL33 — click through for full league tables.

Big-Roof Britain Rank #1092 of 2182
5.0 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #2018 of 2997
13.0 years (UK avg 12.6 years)
~£781 /yr • £10,173 upfront
Standing-Charge Drag Rank #2622 of 2997
33.2% (UK avg 24.6%) drag on savings
£259 fixed • ~£781 /yr value
Aspect Penalty View ranking →
East −16.9% West −22.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL33

Monthly generation per kilowatt of solar panels

kWh 27 Jan 45 Feb 79 Mar 106 Apr 119 May 115 Jun 111 Jul 98 Aug 79 Sep 54 Oct 32 Nov 21 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 41.9% 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 31 kWh per month; the average month produces around 74 kWh. So a typical 4 kW home system would generate roughly 124 kWh in winter, or 295 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
24.43p/kWh
Daily Fixed Charge
69.98p/day
Local Sunshine
886kWh/kW
A 1 kW system generates ~886 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 60% • Flats: 24% • Bungalows: 14% Based on 939 properties

Coverage

Conwy (85%)|Gwynedd (15%)

Areas Covered

Bryn, Pandy, Arllechwedd, Canol Bangor

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

LL34 (Conwy)
≈4.2 km away
Local sunshine: ~871 kWh/kWp · -2% vs LL33
LL58 (Isle of Anglesey)
≈8.5 km away
Local sunshine: ~819 kWh/kWp · -8% vs LL33
LL32 (Conwy)
≈9.4 km away
Local sunshine: ~906 kWh/kWp · +2% vs LL33
LL57 (Gwynedd)
≈10.7 km away
Local sunshine: ~792 kWh/kWp · -11% vs LL33
LL31 (Conwy)
≈11.7 km away
Local sunshine: ~908 kWh/kWp · +2% vs LL33
LL30 (Conwy)
≈12.3 km away
Local sunshine: ~919 kWh/kWp · +4% vs LL33

Similar sunshine across the UK

KA8 (South Ayrshire)
~886 kWh/kWp · -0% vs LL33
SA40 (Carmarthenshire)
~886 kWh/kWp · -0% vs LL33
PH13 (Perth and Kinross)
~886 kWh/kWp · -0% vs LL33