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Solar panel cost in Conwy (LL34)

See realistic solar installation costs, savings and payback for LL34 (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
11.0 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£743
What you save every year
Profit Over 25 Years
£10,433
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 871 kWh/kW — 59 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 871 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)
871 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: £743, Upfront: £8,139, 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 1741 kWh 697 kWh 1045 kWh £193 £104 £297 £3,256 11.0 yrs £2,688
3 kW 2612 kWh 1045 kWh 1567 kWh £289 £157 £446 £4,883 11.0 yrs £4,031
4 kW 3483 kWh 1393 kWh 2090 kWh £385 £209 £594 £6,511 11.0 yrs £5,375
5 kW 4354 kWh 1741 kWh 2612 kWh £482 £261 £743 £8,139 11.0 yrs £6,719
6 kW 5224 kWh 2090 kWh 3135 kWh £578 £313 £891 £9,767 11.0 yrs £8,063
7 kW 6095 kWh 2438 kWh 3657 kWh £674 £366 £1,040 £11,394 11.0 yrs £9,407
8 kW 6966 kWh 2786 kWh 4179 kWh £771 £418 £1,189 £13,022 11.0 yrs £10,750

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: £897, Upfront: £10,239, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1741 kWh 1045 kWh 697 kWh £289 £70 £359 £5,356 14.9 yrs £1,818
3 kW 2612 kWh 1567 kWh 1045 kWh £434 £104 £538 £6,983 13.0 yrs £3,777
4 kW 3483 kWh 2090 kWh 1393 kWh £578 £139 £717 £8,611 12.0 yrs £5,735
5 kW 4354 kWh 2612 kWh 1741 kWh £723 £174 £897 £10,239 11.4 yrs £7,694
6 kW 5224 kWh 3135 kWh 2090 kWh £867 £209 £1,076 £11,867 11.0 yrs £9,653
7 kW 6095 kWh 3657 kWh 2438 kWh £1,012 £244 £1,255 £13,494 10.7 yrs £11,612
8 kW 6966 kWh 4179 kWh 2786 kWh £1,156 £279 £1,435 £15,122 10.5 yrs £13,571

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: £974, Upfront: £11,639, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1741 kWh 1219 kWh 522 kWh £337 £52 £389 £6,756 17.3 yrs £1,033
3 kW 2612 kWh 1828 kWh 784 kWh £506 £78 £584 £8,383 14.4 yrs £3,299
4 kW 3483 kWh 2438 kWh 1045 kWh £674 £104 £779 £10,011 12.9 yrs £5,566
5 kW 4354 kWh 3047 kWh 1306 kWh £843 £131 £974 £11,639 12.0 yrs £7,832
6 kW 5224 kWh 3657 kWh 1567 kWh £1,012 £157 £1,168 £13,267 11.4 yrs £10,098
7 kW 6095 kWh 4266 kWh 1828 kWh £1,180 £183 £1,363 £14,894 10.9 yrs £12,365
8 kW 6966 kWh 4876 kWh 2090 kWh £1,349 £209 £1,558 £16,522 10.6 yrs £14,631

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: £997, Upfront: £13,389, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1741 kWh 1271 kWh 470 kWh £352 £47 £399 £8,506 21.3 yrs £-533
3 kW 2612 kWh 1907 kWh 705 kWh £527 £71 £598 £10,133 16.9 yrs £1,826
4 kW 3483 kWh 2542 kWh 940 kWh £703 £94 £797 £11,761 14.8 yrs £4,185
5 kW 4354 kWh 3178 kWh 1175 kWh £879 £118 £997 £13,389 13.4 yrs £6,543
6 kW 5224 kWh 3814 kWh 1411 kWh £1,055 £141 £1,196 £15,017 12.6 yrs £8,902
7 kW 6095 kWh 4449 kWh 1646 kWh £1,231 £165 £1,395 £16,644 11.9 yrs £11,261
8 kW 6966 kWh 5085 kWh 1881 kWh £1,406 £188 £1,595 £18,272 11.5 yrs £13,619

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: £1,012, Upfront: £15,139, 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 1741 kWh 1306 kWh 435 kWh £361 £44 £405 £10,256 25.3 yrs £-2,160
3 kW 2612 kWh 1959 kWh 653 kWh £542 £65 £607 £11,883 19.6 yrs £261
4 kW 3483 kWh 2612 kWh 871 kWh £723 £87 £810 £13,511 16.7 yrs £2,681
5 kW 4354 kWh 3265 kWh 1088 kWh £903 £109 £1,012 £15,139 15.0 yrs £5,101
6 kW 5224 kWh 3918 kWh 1306 kWh £1,084 £131 £1,214 £16,767 13.8 yrs £7,521
7 kW 6095 kWh 4571 kWh 1524 kWh £1,264 £152 £1,417 £18,394 13.0 yrs £9,941
8 kW 6966 kWh 5224 kWh 1741 kWh £1,445 £174 £1,619 £20,022 12.4 yrs £12,361

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: £1,027, Upfront: £17,589, Break-even: 17.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1741 kWh 1341 kWh 401 kWh £371 £40 £411 £12,706 30.9 yrs £-4,487
3 kW 2612 kWh 2011 kWh 601 kWh £556 £60 £616 £14,333 23.3 yrs £-2,005
4 kW 3483 kWh 2682 kWh 801 kWh £742 £80 £822 £15,961 19.4 yrs £477
5 kW 4354 kWh 3352 kWh 1001 kWh £927 £100 £1,027 £17,589 17.1 yrs £2,958
6 kW 5224 kWh 4023 kWh 1202 kWh £1,113 £120 £1,233 £19,217 15.6 yrs £5,440
7 kW 6095 kWh 4693 kWh 1402 kWh £1,298 £140 £1,438 £20,844 14.5 yrs £7,922
8 kW 6966 kWh 5364 kWh 1602 kWh £1,484 £160 £1,644 £22,472 13.7 yrs £10,403

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 LL34

Figures below are tailored to LL34 — click through for full league tables.

Big-Roof Britain Rank #1430 of 2182
4.7 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1981 of 2996
11.0 years (UK avg 10.8 years)
~£743 /yr • £8,139 upfront
Standing-Charge Drag Rank #2579 of 2996
34.7% (UK avg 26.6%) drag on savings
£258 fixed • ~£743 /yr value
Aspect Penalty View ranking →
East −17.1% West −20.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LL34

Monthly generation per kilowatt of solar panels

kWh 19 Jan 43 Feb 80 Mar 107 Apr 120 May 116 Jun 111 Jul 101 Aug 80 Sep 54 Oct 26 Nov 12 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 34.1% 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 25 kWh per month; the average month produces around 73 kWh. So a typical 4 kW home system would generate roughly 99 kWh in winter, or 290 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
27.66p/kWh
Daily Fixed Charge
70.76p/day
Local Sunshine
871kWh/kW
A 1 kW system generates ~871 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: 63% • Flats: 22% • Bungalows: 12% Based on 1,224 properties

Coverage

Conwy (100%)

Areas Covered

Penmaenmawr, Tudno, Bryn, Glyn

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

LL33 (Conwy)
≈4.2 km away
Local sunshine: ~886 kWh/kWp · +2% vs LL34
LL32 (Conwy)
≈5.4 km away
Local sunshine: ~906 kWh/kWp · +4% vs LL34
LL31 (Conwy)
≈7.5 km away
Local sunshine: ~908 kWh/kWp · +4% vs LL34
LL30 (Conwy)
≈8.2 km away
Local sunshine: ~919 kWh/kWp · +6% vs LL34
LL28 (Conwy)
≈11.5 km away
Local sunshine: ~900 kWh/kWp · +3% vs LL34
LL58 (Isle of Anglesey)
≈11.8 km away
Local sunshine: ~819 kWh/kWp · -6% vs LL34

Similar sunshine across the UK

BL2 (Bolton)
~871 kWh/kWp · +0% vs LL34
M52 (Manchester)
~871 kWh/kWp · -0% vs LL34
BL78 (Bolton)
~871 kWh/kWp · -0% vs LL34