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Solar panel cost in Ceredigion (SA47)

See realistic solar installation costs, savings and payback for SA47 (Ceredigion) 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
10.7 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£914
What you save every year
Profit Over 25 Years
£13,082
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 South Wales, the current unit rate is 26.33p/kWh with a 57.84p/day standing charge. Your postcode’s south-facing sunshine yield is 921 kWh/kW — 47 below the regional median (968).

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 921 kWh per year on a south-facing roof. We value self-used electricity at 26.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.3p/kWh
Standing charge
57.8p/day
Sunshine yield (south)
921 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: £762, Upfront: £8,139, Break-even: 10.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1843 kWh 737 kWh 1106 kWh £194 £111 £305 £3,256 10.7 yrs £2,837
3 kW 2764 kWh 1106 kWh 1659 kWh £291 £166 £457 £4,883 10.7 yrs £4,256
4 kW 3686 kWh 1474 kWh 2211 kWh £388 £221 £609 £6,511 10.7 yrs £5,675
5 kW 4607 kWh 1843 kWh 2764 kWh £485 £276 £762 £8,139 10.7 yrs £7,094
6 kW 5528 kWh 2211 kWh 3317 kWh £582 £332 £914 £9,767 10.7 yrs £8,512
7 kW 6450 kWh 2580 kWh 3870 kWh £679 £387 £1,066 £11,394 10.7 yrs £9,931
8 kW 7371 kWh 2948 kWh 4423 kWh £776 £442 £1,219 £13,022 10.7 yrs £11,350

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: £912, Upfront: £10,239, Break-even: 11.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1843 kWh 1106 kWh 737 kWh £291 £74 £365 £5,356 14.7 yrs £1,941
3 kW 2764 kWh 1659 kWh 1106 kWh £437 £111 £547 £6,983 12.8 yrs £3,962
4 kW 3686 kWh 2211 kWh 1474 kWh £582 £147 £730 £8,611 11.8 yrs £5,982
5 kW 4607 kWh 2764 kWh 1843 kWh £728 £184 £912 £10,239 11.2 yrs £8,003
6 kW 5528 kWh 3317 kWh 2211 kWh £873 £221 £1,095 £11,867 10.8 yrs £10,023
7 kW 6450 kWh 3870 kWh 2580 kWh £1,019 £258 £1,277 £13,494 10.6 yrs £12,044
8 kW 7371 kWh 4423 kWh 2948 kWh £1,164 £295 £1,459 £15,122 10.4 yrs £14,065

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: £987, Upfront: £11,639, Break-even: 11.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1843 kWh 1290 kWh 553 kWh £340 £55 £395 £6,756 17.1 yrs £1,143
3 kW 2764 kWh 1935 kWh 829 kWh £509 £83 £592 £8,383 14.2 yrs £3,465
4 kW 3686 kWh 2580 kWh 1106 kWh £679 £111 £790 £10,011 12.7 yrs £5,786
5 kW 4607 kWh 3225 kWh 1382 kWh £849 £138 £987 £11,639 11.8 yrs £8,108
6 kW 5528 kWh 3870 kWh 1659 kWh £1,019 £166 £1,185 £13,267 11.2 yrs £10,429
7 kW 6450 kWh 4515 kWh 1935 kWh £1,189 £193 £1,382 £14,894 10.8 yrs £12,751
8 kW 7371 kWh 5160 kWh 2211 kWh £1,359 £221 £1,580 £16,522 10.5 yrs £15,072

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: £1,010, Upfront: £13,389, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1843 kWh 1345 kWh 498 kWh £354 £50 £404 £8,506 21.1 yrs £-426
3 kW 2764 kWh 2018 kWh 746 kWh £531 £75 £606 £10,133 16.7 yrs £1,985
4 kW 3686 kWh 2690 kWh 995 kWh £708 £100 £808 £11,761 14.6 yrs £4,397
5 kW 4607 kWh 3363 kWh 1244 kWh £885 £124 £1,010 £13,389 13.3 yrs £6,809
6 kW 5528 kWh 4036 kWh 1493 kWh £1,063 £149 £1,212 £15,017 12.4 yrs £9,221
7 kW 6450 kWh 4708 kWh 1741 kWh £1,240 £174 £1,414 £16,644 11.8 yrs £11,632
8 kW 7371 kWh 5381 kWh 1990 kWh £1,417 £199 £1,616 £18,272 11.3 yrs £14,044

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: £1,025, Upfront: £15,139, 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 1843 kWh 1382 kWh 461 kWh £364 £46 £410 £10,256 25.0 yrs £-2,056
3 kW 2764 kWh 2073 kWh 691 kWh £546 £69 £615 £11,883 19.3 yrs £416
4 kW 3686 kWh 2764 kWh 921 kWh £728 £92 £820 £13,511 16.5 yrs £2,888
5 kW 4607 kWh 3455 kWh 1152 kWh £910 £115 £1,025 £15,139 14.8 yrs £5,360
6 kW 5528 kWh 4146 kWh 1382 kWh £1,092 £138 £1,230 £16,767 13.6 yrs £7,832
7 kW 6450 kWh 4837 kWh 1612 kWh £1,274 £161 £1,435 £18,394 12.8 yrs £10,304
8 kW 7371 kWh 5528 kWh 1843 kWh £1,456 £184 £1,640 £20,022 12.2 yrs £12,776

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: £1,040, Upfront: £17,589, Break-even: 16.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1843 kWh 1419 kWh 424 kWh £374 £42 £416 £12,706 30.5 yrs £-4,386
3 kW 2764 kWh 2128 kWh 636 kWh £560 £64 £624 £14,333 23.0 yrs £-1,854
4 kW 3686 kWh 2838 kWh 848 kWh £747 £85 £832 £15,961 19.2 yrs £679
5 kW 4607 kWh 3547 kWh 1060 kWh £934 £106 £1,040 £17,589 16.9 yrs £3,211
6 kW 5528 kWh 4257 kWh 1272 kWh £1,121 £127 £1,248 £19,217 15.4 yrs £5,743
7 kW 6450 kWh 4966 kWh 1483 kWh £1,308 £148 £1,456 £20,844 14.3 yrs £8,275
8 kW 7371 kWh 5676 kWh 1695 kWh £1,494 £170 £1,664 £22,472 13.5 yrs £10,807

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 Ceredigion

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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Understand DNO, G98 and G99 export limits

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Insights for SA47

Figures below are tailored to SA47 — click through for full league tables.

Big-Roof Britain Rank #137 of 2182
6.4 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #1724 of 2996
10.7 years (UK avg 10.8 years)
~£914 /yr • £9,767 upfront
Standing-Charge Drag Rank #1028 of 2996
23.1% (UK avg 26.6%) drag on savings
£211 fixed • ~£914 /yr value
Aspect Penalty View ranking →
East −17.8% West −20.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in SA47

Monthly generation per kilowatt of solar panels

kWh 31 Jan 49 Feb 81 Mar 111 Apr 119 May 116 Jun 111 Jul 100 Aug 82 Sep 57 Oct 38 Nov 26 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 46.1% 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 35 kWh per month; the average month produces around 77 kWh. So a typical 4 kW home system would generate roughly 141 kWh in winter, or 307 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.33p/kWh
Daily Fixed Charge
57.84p/day
Local Sunshine
921kWh/kW
A 1 kW system generates ~921 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: 59% • Flats: 6% • Bungalows: 32% Based on 456 properties

Coverage

Ceredigion (100%)

Areas Covered

Llannarth, Ciliau Aeron, New Quay and Llanllwchaearn, Lampeter

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 South Wales

SA45 (Ceredigion)
≈4.2 km away
Local sunshine: ~909 kWh/kWp · -1% vs SA47
SA46 (Ceredigion)
≈6.1 km away
Local sunshine: ~927 kWh/kWp · +1% vs SA47
SA44 (Ceredigion)
≈14.4 km away
Local sunshine: ~893 kWh/kWp · -3% vs SA47
SA40 (Carmarthenshire)
≈16.3 km away
Local sunshine: ~886 kWh/kWp · -4% vs SA47
SA48 (Ceredigion)
≈17.1 km away
Local sunshine: ~888 kWh/kWp · -4% vs SA47
SA39 (Carmarthenshire)
≈19.6 km away
Local sunshine: ~888 kWh/kWp · -4% vs SA47

Similar sunshine across the UK

TS4 (Middlesbrough)
~921 kWh/kWp · +0% vs SA47
TS1 (Middlesbrough)
~921 kWh/kWp · +0% vs SA47
TS90 (Middlesbrough)
~921 kWh/kWp · +0% vs SA47