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Solar panel cost in Ceredigion (SA45)

See realistic solar installation costs, savings and payback for SA45 (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
13.0 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£942
What you save every year
Profit Over 25 Years
£11,353
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 South Wales, the current unit rate is 28.18p/kWh with a 52.75p/day standing charge. Your postcode’s south-facing sunshine yield is 909 kWh/kW — 59 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 909 kWh per year on a south-facing roof. We value self-used electricity at 28.2p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
28.2p/kWh
Standing charge
52.8p/day
Sunshine yield (south)
909 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: £785, Upfront: £10,173, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 727 kWh 1091 kWh £205 £109 £314 £4,069 13.0 yrs £2,214
3 kW 2728 kWh 1091 kWh 1637 kWh £308 £164 £471 £6,104 13.0 yrs £3,320
4 kW 3637 kWh 1455 kWh 2182 kWh £410 £218 £628 £8,138 13.0 yrs £4,427
5 kW 4547 kWh 1819 kWh 2728 kWh £513 £273 £785 £10,173 13.0 yrs £5,534
6 kW 5456 kWh 2182 kWh 3274 kWh £615 £327 £942 £12,207 13.0 yrs £6,641
7 kW 6366 kWh 2546 kWh 3819 kWh £718 £382 £1,099 £14,242 13.0 yrs £7,747
8 kW 7275 kWh 2910 kWh 4365 kWh £820 £436 £1,257 £16,276 13.0 yrs £8,854

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: £951, Upfront: £12,273, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1091 kWh 727 kWh £308 £73 £380 £6,169 16.2 yrs £1,436
3 kW 2728 kWh 1637 kWh 1091 kWh £461 £109 £570 £8,204 14.4 yrs £3,204
4 kW 3637 kWh 2182 kWh 1455 kWh £615 £145 £761 £10,238 13.5 yrs £4,972
5 kW 4547 kWh 2728 kWh 1819 kWh £769 £182 £951 £12,273 12.9 yrs £6,740
6 kW 5456 kWh 3274 kWh 2182 kWh £923 £218 £1,141 £14,307 12.5 yrs £8,508
7 kW 6366 kWh 3819 kWh 2546 kWh £1,076 £255 £1,331 £16,342 12.3 yrs £10,276
8 kW 7275 kWh 4365 kWh 2910 kWh £1,230 £291 £1,521 £18,376 12.1 yrs £12,045

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: £1,033, Upfront: £13,673, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1273 kWh 546 kWh £359 £55 £413 £7,569 18.3 yrs £697
3 kW 2728 kWh 1910 kWh 818 kWh £538 £82 £620 £9,604 15.5 yrs £2,796
4 kW 3637 kWh 2546 kWh 1091 kWh £718 £109 £827 £11,638 14.1 yrs £4,895
5 kW 4547 kWh 3183 kWh 1364 kWh £897 £136 £1,033 £13,673 13.2 yrs £6,994
6 kW 5456 kWh 3819 kWh 1637 kWh £1,076 £164 £1,240 £15,707 12.7 yrs £9,092
7 kW 6366 kWh 4456 kWh 1910 kWh £1,256 £191 £1,447 £17,742 12.3 yrs £11,191
8 kW 7275 kWh 5092 kWh 2182 kWh £1,435 £218 £1,653 £19,776 12.0 yrs £13,290

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: £1,058, Upfront: £15,423, 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 1819 kWh 1328 kWh 491 kWh £374 £49 £423 £9,319 22.0 yrs £-854
3 kW 2728 kWh 1991 kWh 737 kWh £561 £74 £635 £11,354 17.9 yrs £1,344
4 kW 3637 kWh 2655 kWh 982 kWh £748 £98 £846 £13,388 15.8 yrs £3,542
5 kW 4547 kWh 3319 kWh 1228 kWh £935 £123 £1,058 £15,423 14.6 yrs £5,740
6 kW 5456 kWh 3983 kWh 1473 kWh £1,122 £147 £1,270 £17,457 13.7 yrs £7,937
7 kW 6366 kWh 4647 kWh 1719 kWh £1,309 £172 £1,481 £19,492 13.2 yrs £10,135
8 kW 7275 kWh 5311 kWh 1964 kWh £1,497 £196 £1,693 £21,526 12.7 yrs £12,333

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: £1,075, Upfront: £17,173, Break-even: 16.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1364 kWh 455 kWh £384 £45 £430 £11,069 25.8 yrs £-2,472
3 kW 2728 kWh 2046 kWh 682 kWh £577 £68 £645 £13,104 20.3 yrs £-208
4 kW 3637 kWh 2728 kWh 909 kWh £769 £91 £860 £15,138 17.6 yrs £2,056
5 kW 4547 kWh 3410 kWh 1137 kWh £961 £114 £1,075 £17,173 16.0 yrs £4,320
6 kW 5456 kWh 4092 kWh 1364 kWh £1,153 £136 £1,290 £19,207 14.9 yrs £6,584
7 kW 6366 kWh 4774 kWh 1591 kWh £1,345 £159 £1,504 £21,242 14.1 yrs £8,848
8 kW 7275 kWh 5456 kWh 1819 kWh £1,538 £182 £1,719 £23,276 13.5 yrs £11,112

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: £1,091, Upfront: £19,623, Break-even: 18.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1819 kWh 1400 kWh 418 kWh £395 £42 £436 £13,519 31.0 yrs £-4,790
3 kW 2728 kWh 2101 kWh 627 kWh £592 £63 £655 £15,554 23.8 yrs £-2,460
4 kW 3637 kWh 2801 kWh 837 kWh £789 £84 £873 £17,588 20.1 yrs £-129
5 kW 4547 kWh 3501 kWh 1046 kWh £987 £105 £1,091 £19,623 18.0 yrs £2,201
6 kW 5456 kWh 4201 kWh 1255 kWh £1,184 £125 £1,309 £21,657 16.5 yrs £4,531
7 kW 6366 kWh 4901 kWh 1464 kWh £1,381 £146 £1,528 £23,692 15.5 yrs £6,861
8 kW 7275 kWh 5602 kWh 1673 kWh £1,579 £167 £1,746 £25,726 14.7 yrs £9,191

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 SA45

Figures below are tailored to SA45 — click through for full league tables.

Big-Roof Britain Rank #126 of 2182
6.4 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #2041 of 2997
13.0 years (UK avg 12.6 years)
~£942 /yr • £12,207 upfront
Standing-Charge Drag Rank #997 of 2997
20.4% (UK avg 24.6%) drag on savings
£193 fixed • ~£942 /yr value
Aspect Penalty View ranking →
East −20.5% West −19.9%
Typical output loss versus a south-facing roof (lower is better)

Your Area at a Glance

Your Electricity Rate
28.18p/kWh
Daily Fixed Charge
52.75p/day
Local Sunshine
909kWh/kW
A 1 kW system generates ~909 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: 66% • Flats: 9% • Bungalows: 23% Based on 610 properties

Coverage

Ceredigion (100%)

Areas Covered

New Quay and Llanllwchaearn, Llannarth, Llandysilio and Llangrannog, Llandysul North and Troedyraur

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 South Wales

SA47 (Ceredigion)
≈4.2 km away
Local sunshine: ~921 kWh/kWp · +1% vs SA45
SA46 (Ceredigion)
≈7.6 km away
Local sunshine: ~927 kWh/kWp · +2% vs SA45
SA44 (Ceredigion)
≈15.8 km away
Local sunshine: ~893 kWh/kWp · -2% vs SA45
SA40 (Carmarthenshire)
≈20.2 km away
Local sunshine: ~886 kWh/kWp · -3% vs SA45
SA38 (Carmarthenshire)
≈20.5 km away
Local sunshine: ~922 kWh/kWp · +1% vs SA45
SA48 (Ceredigion)
≈21.3 km away
Local sunshine: ~888 kWh/kWp · -2% vs SA45

Similar sunshine across the UK

WN8 (West Lancashire)
~909 kWh/kWp · +0% vs SA45
NE30 (North Tyneside)
~909 kWh/kWp · +0% vs SA45
NE29 (North Tyneside)
~909 kWh/kWp · +0% vs SA45