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Solar panel cost in Conwy (LL22)

See realistic solar installation costs, savings and payback for LL22 (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
10.1 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£971
What you save every year
Profit Over 25 Years
£14,512
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 949 kWh/kW — 19 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 949 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)
949 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: £809, Upfront: £8,139, 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 1897 kWh 759 kWh 1138 kWh £210 £114 £324 £3,256 10.1 yrs £3,219
3 kW 2846 kWh 1138 kWh 1707 kWh £315 £171 £486 £4,883 10.1 yrs £4,828
4 kW 3794 kWh 1518 kWh 2276 kWh £420 £228 £647 £6,511 10.1 yrs £6,437
5 kW 4743 kWh 1897 kWh 2846 kWh £525 £285 £809 £8,139 10.1 yrs £8,047
6 kW 5691 kWh 2276 kWh 3415 kWh £630 £341 £971 £9,767 10.1 yrs £9,656
7 kW 6640 kWh 2656 kWh 3984 kWh £735 £398 £1,133 £11,394 10.1 yrs £11,265
8 kW 7588 kWh 3035 kWh 4553 kWh £840 £455 £1,295 £13,022 10.1 yrs £12,875

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: £977, Upfront: £10,239, 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 1897 kWh 1138 kWh 759 kWh £315 £76 £391 £5,356 13.7 yrs £2,459
3 kW 2846 kWh 1707 kWh 1138 kWh £472 £114 £586 £6,983 11.9 yrs £4,738
4 kW 3794 kWh 2276 kWh 1518 kWh £630 £152 £781 £8,611 11.0 yrs £7,018
5 kW 4743 kWh 2846 kWh 1897 kWh £787 £190 £977 £10,239 10.5 yrs £9,297
6 kW 5691 kWh 3415 kWh 2276 kWh £944 £228 £1,172 £11,867 10.1 yrs £11,576
7 kW 6640 kWh 3984 kWh 2656 kWh £1,102 £266 £1,368 £13,494 9.9 yrs £13,856
8 kW 7588 kWh 4553 kWh 3035 kWh £1,259 £304 £1,563 £15,122 9.7 yrs £16,135

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: £1,061, Upfront: £11,639, Break-even: 11.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1897 kWh 1328 kWh 569 kWh £367 £57 £424 £6,756 15.9 yrs £1,729
3 kW 2846 kWh 1992 kWh 854 kWh £551 £85 £636 £8,383 13.2 yrs £4,343
4 kW 3794 kWh 2656 kWh 1138 kWh £735 £114 £848 £10,011 11.8 yrs £6,958
5 kW 4743 kWh 3320 kWh 1423 kWh £918 £142 £1,061 £11,639 11.0 yrs £9,572
6 kW 5691 kWh 3984 kWh 1707 kWh £1,102 £171 £1,273 £13,267 10.4 yrs £12,186
7 kW 6640 kWh 4648 kWh 1992 kWh £1,286 £199 £1,485 £14,894 10.0 yrs £14,801
8 kW 7588 kWh 5312 kWh 2276 kWh £1,469 £228 £1,697 £16,522 9.7 yrs £17,415

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: £1,086, Upfront: £13,389, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1897 kWh 1385 kWh 512 kWh £383 £51 £434 £8,506 19.6 yrs £180
3 kW 2846 kWh 2077 kWh 768 kWh £575 £77 £651 £10,133 15.6 yrs £2,895
4 kW 3794 kWh 2770 kWh 1024 kWh £766 £102 £869 £11,761 13.5 yrs £5,610
5 kW 4743 kWh 3462 kWh 1281 kWh £958 £128 £1,086 £13,389 12.3 yrs £8,325
6 kW 5691 kWh 4155 kWh 1537 kWh £1,149 £154 £1,303 £15,017 11.5 yrs £11,039
7 kW 6640 kWh 4847 kWh 1793 kWh £1,341 £179 £1,520 £16,644 11.0 yrs £13,754
8 kW 7588 kWh 5539 kWh 2049 kWh £1,532 £205 £1,737 £18,272 10.5 yrs £16,469

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: £1,102, Upfront: £15,139, 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 1897 kWh 1423 kWh 474 kWh £394 £47 £441 £10,256 23.3 yrs £-1,436
3 kW 2846 kWh 2134 kWh 711 kWh £590 £71 £661 £11,883 18.0 yrs £1,346
4 kW 3794 kWh 2846 kWh 949 kWh £787 £95 £882 £13,511 15.3 yrs £4,128
5 kW 4743 kWh 3557 kWh 1186 kWh £984 £119 £1,102 £15,139 13.7 yrs £6,910
6 kW 5691 kWh 4268 kWh 1423 kWh £1,181 £142 £1,323 £16,767 12.7 yrs £9,691
7 kW 6640 kWh 4980 kWh 1660 kWh £1,377 £166 £1,543 £18,394 11.9 yrs £12,473
8 kW 7588 kWh 5691 kWh 1897 kWh £1,574 £190 £1,764 £20,022 11.4 yrs £15,255

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: £1,119, Upfront: £17,589, Break-even: 15.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1897 kWh 1461 kWh 436 kWh £404 £44 £448 £12,706 28.4 yrs £-3,752
3 kW 2846 kWh 2191 kWh 654 kWh £606 £65 £672 £14,333 21.3 yrs £-903
4 kW 3794 kWh 2921 kWh 873 kWh £808 £87 £895 £15,961 17.8 yrs £1,946
5 kW 4743 kWh 3652 kWh 1091 kWh £1,010 £109 £1,119 £17,589 15.7 yrs £4,795
6 kW 5691 kWh 4382 kWh 1309 kWh £1,212 £131 £1,343 £19,217 14.3 yrs £7,643
7 kW 6640 kWh 5113 kWh 1527 kWh £1,414 £153 £1,567 £20,844 13.3 yrs £10,492
8 kW 7588 kWh 5843 kWh 1745 kWh £1,616 £175 £1,791 £22,472 12.5 yrs £13,341

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 Conwy

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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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for LL22

Figures below are tailored to LL22 — click through for full league tables.

Big-Roof Britain Rank #408 of 2182
5.7 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1117 of 2996
10.0 years (UK avg 10.8 years)
~£972 /yr • £9,767 upfront
Standing-Charge Drag Rank #1665 of 2996
26.5% (UK avg 26.6%) drag on savings
£258 fixed • ~£972 /yr value
Aspect Penalty View ranking →
East −19.8% West −21.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL22

Monthly generation per kilowatt of solar panels

kWh 33 Jan 50 Feb 84 Mar 110 Apr 124 May 119 Jun 115 Jul 105 Aug 85 Sep 61 Oct 38 Nov 27 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 46.0% 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 79 kWh. So a typical 4 kW home system would generate roughly 145 kWh in winter, or 316 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/day
Local Sunshine
949kWh/kW
A 1 kW system generates ~949 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: 46% • Flats: 16% • Bungalows: 37% Based on 5,656 properties

Coverage

Conwy (93%)|Denbighshire (7%)

Areas Covered

Gele and Llanddulas, Pen-sarn Pentre Mawr, Betws-yn-Rhos, Towyn, Eglwys-bach a Llangernyw, Rhyl South West, Llysfaen, Trefnant + 3 more

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

LL18 (Denbighshire)
≈7.5 km away
Local sunshine: ~933 kWh/kWp · -2% vs LL22
LL29 (Conwy)
≈9.3 km away
Local sunshine: ~923 kWh/kWp · -3% vs LL22
LL17 (Denbighshire)
≈10.0 km away
Local sunshine: ~924 kWh/kWp · -3% vs LL22
LL28 (Conwy)
≈11.2 km away
Local sunshine: ~900 kWh/kWp · -5% vs LL22
LL19 (Denbighshire)
≈12.8 km away
Local sunshine: ~918 kWh/kWp · -3% vs LL22
LL31 (Conwy)
≈15.0 km away
Local sunshine: ~908 kWh/kWp · -4% vs LL22

Similar sunshine across the UK

B33 (Birmingham)
~949 kWh/kWp · +0% vs LL22
B37 (Solihull)
~949 kWh/kWp · +0% vs LL22
DY12 (Wyre Forest)
~949 kWh/kWp · +0% vs LL22