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Solar panel cost in Bridgend (CF35)

See realistic solar installation costs, savings and payback for CF35 (Bridgend) 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
9.4 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£870
What you save every year
Profit Over 25 Years
£13,599
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 1052 kWh/kW — 83 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 1052 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)
1052 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: £870, Upfront: £8,139, Break-even: 9.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2104 kWh 842 kWh 1262 kWh £222 £126 £348 £3,256 9.4 yrs £3,701
3 kW 3156 kWh 1262 kWh 1893 kWh £332 £189 £522 £4,883 9.4 yrs £5,551
4 kW 4208 kWh 1683 kWh 2525 kWh £443 £252 £696 £6,511 9.4 yrs £7,401
5 kW 5260 kWh 2104 kWh 3156 kWh £554 £316 £870 £8,139 9.4 yrs £9,252
6 kW 6312 kWh 2525 kWh 3787 kWh £665 £379 £1,043 £9,767 9.4 yrs £11,102
7 kW 7364 kWh 2945 kWh 4418 kWh £776 £442 £1,217 £11,394 9.4 yrs £12,952
8 kW 8415 kWh 3366 kWh 5049 kWh £886 £505 £1,391 £13,022 9.4 yrs £14,803

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: £1,041, Upfront: £10,239, Break-even: 9.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2104 kWh 1262 kWh 842 kWh £332 £84 £417 £5,356 12.9 yrs £2,975
3 kW 3156 kWh 1893 kWh 1262 kWh £499 £126 £625 £6,983 11.2 yrs £5,512
4 kW 4208 kWh 2525 kWh 1683 kWh £665 £168 £833 £8,611 10.3 yrs £8,050
5 kW 5260 kWh 3156 kWh 2104 kWh £831 £210 £1,041 £10,239 9.8 yrs £10,587
6 kW 6312 kWh 3787 kWh 2525 kWh £997 £252 £1,250 £11,867 9.5 yrs £13,125
7 kW 7364 kWh 4418 kWh 2945 kWh £1,163 £295 £1,458 £13,494 9.3 yrs £15,662
8 kW 8415 kWh 5049 kWh 3366 kWh £1,329 £337 £1,666 £15,122 9.1 yrs £18,200

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: £1,127, Upfront: £11,639, Break-even: 10.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2104 kWh 1473 kWh 631 kWh £388 £63 £451 £6,756 15.0 yrs £2,262
3 kW 3156 kWh 2209 kWh 947 kWh £582 £95 £676 £8,383 12.4 yrs £5,143
4 kW 4208 kWh 2945 kWh 1262 kWh £776 £126 £902 £10,011 11.1 yrs £8,024
5 kW 5260 kWh 3682 kWh 1578 kWh £969 £158 £1,127 £11,639 10.3 yrs £10,905
6 kW 6312 kWh 4418 kWh 1893 kWh £1,163 £189 £1,353 £13,267 9.8 yrs £13,786
7 kW 7364 kWh 5154 kWh 2209 kWh £1,357 £221 £1,578 £14,894 9.4 yrs £16,667
8 kW 8415 kWh 5891 kWh 2525 kWh £1,551 £252 £1,804 £16,522 9.2 yrs £19,548

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: £1,153, Upfront: £13,389, Break-even: 11.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2104 kWh 1536 kWh 568 kWh £404 £57 £461 £8,506 18.4 yrs £718
3 kW 3156 kWh 2304 kWh 852 kWh £607 £85 £692 £10,133 14.6 yrs £3,702
4 kW 4208 kWh 3072 kWh 1136 kWh £809 £114 £922 £11,761 12.8 yrs £6,686
5 kW 5260 kWh 3840 kWh 1420 kWh £1,011 £142 £1,153 £13,389 11.6 yrs £9,670
6 kW 6312 kWh 4607 kWh 1704 kWh £1,213 £170 £1,384 £15,017 10.9 yrs £12,655
7 kW 7364 kWh 5375 kWh 1988 kWh £1,415 £199 £1,614 £16,644 10.3 yrs £15,639
8 kW 8415 kWh 6143 kWh 2272 kWh £1,618 £227 £1,845 £18,272 9.9 yrs £18,623

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: £1,170, Upfront: £15,139, 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 2104 kWh 1578 kWh 526 kWh £415 £53 £468 £10,256 21.9 yrs £-894
3 kW 3156 kWh 2367 kWh 789 kWh £623 £79 £702 £11,883 16.9 yrs £2,158
4 kW 4208 kWh 3156 kWh 1052 kWh £831 £105 £936 £13,511 14.4 yrs £5,211
5 kW 5260 kWh 3945 kWh 1315 kWh £1,039 £131 £1,170 £15,139 12.9 yrs £8,264
6 kW 6312 kWh 4734 kWh 1578 kWh £1,246 £158 £1,404 £16,767 11.9 yrs £11,317
7 kW 7364 kWh 5523 kWh 1841 kWh £1,454 £184 £1,638 £18,394 11.2 yrs £14,370
8 kW 8415 kWh 6312 kWh 2104 kWh £1,662 £210 £1,872 £20,022 10.7 yrs £17,422

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: £1,187, Upfront: £17,589, 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 2104 kWh 1620 kWh 484 kWh £427 £48 £475 £12,706 26.8 yrs £-3,207
3 kW 3156 kWh 2430 kWh 726 kWh £640 £73 £712 £14,333 20.1 yrs £-85
4 kW 4208 kWh 3240 kWh 968 kWh £853 £97 £950 £15,961 16.8 yrs £3,036
5 kW 5260 kWh 4050 kWh 1210 kWh £1,066 £121 £1,187 £17,589 14.8 yrs £6,158
6 kW 6312 kWh 4860 kWh 1452 kWh £1,280 £145 £1,425 £19,217 13.5 yrs £9,279
7 kW 7364 kWh 5670 kWh 1694 kWh £1,493 £169 £1,662 £20,844 12.5 yrs £12,401
8 kW 8415 kWh 6480 kWh 1936 kWh £1,706 £194 £1,900 £22,472 11.8 yrs £15,522

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 Bridgend

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 CF35

Figures below are tailored to CF35 — click through for full league tables.

Big-Roof Britain Rank #645 of 2182
5.4 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #220 of 2996
9.4 years (UK avg 10.8 years)
~£870 /yr • £8,139 upfront
Standing-Charge Drag Rank #1284 of 2996
24.3% (UK avg 26.6%) drag on savings
£211 fixed • ~£870 /yr value
Aspect Penalty View ranking →
East −20.3% West −22.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CF35

Monthly generation per kilowatt of solar panels

kWh 36 Jan 56 Feb 91 Mar 122 Apr 134 May 131 Jun 130 Jul 114 Aug 96 Sep 66 Oct 44 Nov 32 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 47.1% 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 41 kWh per month; the average month produces around 88 kWh. So a typical 4 kW home system would generate roughly 165 kWh in winter, or 351 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.33p/kWh
Daily Fixed Charge
57.84p/day
Local Sunshine
1052kWh/kW
A 1 kW system generates ~1052 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: 79% • Flats: 9% • Bungalows: 12% Based on 4,717 properties

Coverage

Bridgend (86%)|Vale of Glamorgan (10%)|Rhondda Cynon Taf (3%)

Areas Covered

Pencoed and Penprysg, Coity Higher, Brackla East and Coychurch Lower, Oldcastle, St Bride's Major, Llandow, Blackmill, Brynna and Llanharan + 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 South Wales

CF31 (Bridgend)
≈4.1 km away
Local sunshine: ~1,020 kWh/kWp · -3% vs CF35
CF32 (Bridgend)
≈5.1 km away
Local sunshine: ~1,031 kWh/kWp · -2% vs CF35
CF7 (Rhondda Cynon Taf)
≈7.1 km away
Local sunshine: ~1,043 kWh/kWp · -1% vs CF35
CF71 (Vale of Glamorgan)
≈8.4 km away
Local sunshine: ~1,043 kWh/kWp · -1% vs CF35
CF72 (Rhondda Cynon Taf)
≈9.1 km away
Local sunshine: ~1,011 kWh/kWp · -4% vs CF35
CF39 (Rhondda Cynon Taf)
≈11.5 km away
Local sunshine: ~929 kWh/kWp · -12% vs CF35

Similar sunshine across the UK

SO45 (New Forest)
~1,052 kWh/kWp · -0% vs CF35
TN19 (Rother)
~1,052 kWh/kWp · +0% vs CF35
IP16 (East Suffolk)
~1,051 kWh/kWp · -0% vs CF35