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Solar panel cost in Rhondda Cynon Taf (CF72)

See realistic solar installation costs, savings and payback for CF72 (Rhondda Cynon Taf) 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
9.7 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£835
What you save every year
Profit Over 25 Years
£12,745
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 1011 kWh/kW — 42 above the regional median (968).

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 1011 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)
1011 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: £835, Upfront: £8,139, Break-even: 9.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2021 kWh 808 kWh 1213 kWh £213 £121 £334 £3,256 9.7 yrs £3,427
3 kW 3032 kWh 1213 kWh 1819 kWh £319 £182 £501 £4,883 9.7 yrs £5,141
4 kW 4042 kWh 1617 kWh 2425 kWh £426 £243 £668 £6,511 9.7 yrs £6,855
5 kW 5053 kWh 2021 kWh 3032 kWh £532 £303 £835 £8,139 9.7 yrs £8,568
6 kW 6064 kWh 2425 kWh 3638 kWh £639 £364 £1,002 £9,767 9.7 yrs £10,282
7 kW 7074 kWh 2830 kWh 4244 kWh £745 £424 £1,169 £11,394 9.7 yrs £11,996
8 kW 8085 kWh 3234 kWh 4851 kWh £851 £485 £1,337 £13,022 9.7 yrs £13,709

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: £1,000, Upfront: £10,239, Break-even: 10.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2021 kWh 1213 kWh 808 kWh £319 £81 £400 £5,356 13.4 yrs £2,648
3 kW 3032 kWh 1819 kWh 1213 kWh £479 £121 £600 £6,983 11.6 yrs £5,021
4 kW 4042 kWh 2425 kWh 1617 kWh £639 £162 £800 £8,611 10.8 yrs £7,395
5 kW 5053 kWh 3032 kWh 2021 kWh £798 £202 £1,000 £10,239 10.2 yrs £9,769
6 kW 6064 kWh 3638 kWh 2425 kWh £958 £243 £1,200 £11,867 9.9 yrs £12,143
7 kW 7074 kWh 4244 kWh 2830 kWh £1,118 £283 £1,401 £13,494 9.6 yrs £14,516
8 kW 8085 kWh 4851 kWh 3234 kWh £1,277 £323 £1,601 £15,122 9.4 yrs £16,890

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: £1,083, Upfront: £11,639, 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 2021 kWh 1415 kWh 606 kWh £373 £61 £433 £6,756 15.6 yrs £1,908
3 kW 3032 kWh 2122 kWh 910 kWh £559 £91 £650 £8,383 12.9 yrs £4,611
4 kW 4042 kWh 2830 kWh 1213 kWh £745 £121 £866 £10,011 11.6 yrs £7,315
5 kW 5053 kWh 3537 kWh 1516 kWh £931 £152 £1,083 £11,639 10.7 yrs £10,019
6 kW 6064 kWh 4244 kWh 1819 kWh £1,118 £182 £1,299 £13,267 10.2 yrs £12,723
7 kW 7074 kWh 4952 kWh 2122 kWh £1,304 £212 £1,516 £14,894 9.8 yrs £15,427
8 kW 8085 kWh 5659 kWh 2425 kWh £1,490 £243 £1,733 £16,522 9.5 yrs £18,131

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: £1,108, Upfront: £13,389, Break-even: 12.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2021 kWh 1475 kWh 546 kWh £388 £55 £443 £8,506 19.2 yrs £356
3 kW 3032 kWh 2213 kWh 819 kWh £583 £82 £665 £10,133 15.2 yrs £3,159
4 kW 4042 kWh 2951 kWh 1091 kWh £777 £109 £886 £11,761 13.3 yrs £5,961
5 kW 5053 kWh 3689 kWh 1364 kWh £971 £136 £1,108 £13,389 12.1 yrs £8,764
6 kW 6064 kWh 4426 kWh 1637 kWh £1,165 £164 £1,329 £15,017 11.3 yrs £11,567
7 kW 7074 kWh 5164 kWh 1910 kWh £1,360 £191 £1,551 £16,644 10.7 yrs £14,370
8 kW 8085 kWh 5902 kWh 2183 kWh £1,554 £218 £1,772 £18,272 10.3 yrs £17,173

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: £1,124, Upfront: £15,139, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2021 kWh 1516 kWh 505 kWh £399 £51 £450 £10,256 22.8 yrs £-1,262
3 kW 3032 kWh 2274 kWh 758 kWh £599 £76 £674 £11,883 17.6 yrs £1,607
4 kW 4042 kWh 3032 kWh 1011 kWh £798 £101 £899 £13,511 15.0 yrs £4,475
5 kW 5053 kWh 3790 kWh 1263 kWh £998 £126 £1,124 £15,139 13.5 yrs £7,344
6 kW 6064 kWh 4548 kWh 1516 kWh £1,197 £152 £1,349 £16,767 12.4 yrs £10,213
7 kW 7074 kWh 5306 kWh 1769 kWh £1,397 £177 £1,574 £18,394 11.7 yrs £13,082
8 kW 8085 kWh 6064 kWh 2021 kWh £1,597 £202 £1,799 £20,022 11.1 yrs £15,951

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: £1,141, Upfront: £17,589, 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 2021 kWh 1556 kWh 465 kWh £410 £46 £456 £12,706 27.8 yrs £-3,580
3 kW 3032 kWh 2334 kWh 697 kWh £615 £70 £684 £14,333 20.9 yrs £-645
4 kW 4042 kWh 3113 kWh 930 kWh £820 £93 £913 £15,961 17.5 yrs £2,289
5 kW 5053 kWh 3891 kWh 1162 kWh £1,024 £116 £1,141 £17,589 15.4 yrs £5,224
6 kW 6064 kWh 4669 kWh 1395 kWh £1,229 £139 £1,369 £19,217 14.0 yrs £8,159
7 kW 7074 kWh 5447 kWh 1627 kWh £1,434 £163 £1,597 £20,844 13.1 yrs £11,094
8 kW 8085 kWh 6225 kWh 1859 kWh £1,639 £186 £1,825 £22,472 12.3 yrs £14,029

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 Rhondda Cynon Taf

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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Insights for CF72

Figures below are tailored to CF72 — click through for full league tables.

Big-Roof Britain Rank #1045 of 2182
5.0 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #441 of 2996
9.7 years (UK avg 10.8 years)
~£836 /yr • £8,139 upfront
Standing-Charge Drag Rank #1440 of 2996
25.2% (UK avg 26.6%) drag on savings
£211 fixed • ~£836 /yr value
Aspect Penalty View ranking →
East −19.6% West −21.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CF72

Monthly generation per kilowatt of solar panels

kWh 36 Jan 53 Feb 88 Mar 116 Apr 127 May 125 Jun 124 Jul 109 Aug 92 Sep 64 Oct 43 Nov 32 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 48.2% 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 41 kWh per month; the average month produces around 84 kWh. So a typical 4 kW home system would generate roughly 162 kWh in winter, or 337 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.33p/kWh
Daily Fixed Charge
57.84p/day
Local Sunshine
1011kWh/kW
A 1 kW system generates ~1011 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: 80% • Flats: 13% • Bungalows: 6% Based on 6,509 properties

Coverage

Rhondda Cynon Taf (97%)|Vale of Glamorgan (2%)

Areas Covered

Llantrisant and Talbot Green, Brynna and Llanharan, Pontyclun West, Llanharry, Pontyclun Central, Pontyclun East, Peterston-super-Ely, Beddau and Tyn-y-nant + 4 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 South Wales

CF7 (Rhondda Cynon Taf)
≈2.2 km away
Local sunshine: ~1,043 kWh/kWp · +3% vs CF72
CF38 (Rhondda Cynon Taf)
≈5.2 km away
Local sunshine: ~969 kWh/kWp · -4% vs CF72
CF39 (Rhondda Cynon Taf)
≈8.5 km away
Local sunshine: ~929 kWh/kWp · -8% vs CF72
CF37 (Rhondda Cynon Taf)
≈8.5 km away
Local sunshine: ~940 kWh/kWp · -7% vs CF72
CF15 (Cardiff)
≈8.9 km away
Local sunshine: ~985 kWh/kWp · -3% vs CF72
CF71 (Vale of Glamorgan)
≈9.1 km away
Local sunshine: ~1,043 kWh/kWp · +3% vs CF72

Similar sunshine across the UK

BR5 (Bromley)
~1,011 kWh/kWp · -0% vs CF72
BA12 (Wiltshire)
~1,011 kWh/kWp · +0% vs CF72
SE18 (Greenwich)
~1,011 kWh/kWp · +0% vs CF72