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Solar panel cost in South Cambridgeshire (CB24)

See realistic solar installation costs, savings and payback for CB24 (South Cambridgeshire) 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
£9,767
What you pay to get started
Annual Benefit
£1,005
What you save every year
Profit Over 25 Years
£15,347
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 Eastern, the current unit rate is 26.38p/kWh with a 53.94p/day standing charge. Your postcode’s south-facing sunshine yield is 1012 kWh/kW — 2 above the regional median (1009).

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 1012 kWh per year on a south-facing roof. We value self-used electricity at 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
53.9p/day
Sunshine yield (south)
1012 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: £837, 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 2023 kWh 809 kWh 1214 kWh £213 £121 £335 £3,256 9.7 yrs £3,441
3 kW 3035 kWh 1214 kWh 1821 kWh £320 £182 £502 £4,883 9.7 yrs £5,162
4 kW 4046 kWh 1618 kWh 2428 kWh £427 £243 £670 £6,511 9.7 yrs £6,883
5 kW 5058 kWh 2023 kWh 3035 kWh £534 £303 £837 £8,139 9.7 yrs £8,604
6 kW 6069 kWh 2428 kWh 3641 kWh £640 £364 £1,005 £9,767 9.7 yrs £10,324
7 kW 7081 kWh 2832 kWh 4248 kWh £747 £425 £1,172 £11,394 9.7 yrs £12,045
8 kW 8092 kWh 3237 kWh 4855 kWh £854 £486 £1,339 £13,022 9.7 yrs £13,766

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: £1,003, 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 2023 kWh 1214 kWh 809 kWh £320 £81 £401 £5,356 13.4 yrs £2,667
3 kW 3035 kWh 1821 kWh 1214 kWh £480 £121 £602 £6,983 11.6 yrs £5,050
4 kW 4046 kWh 2428 kWh 1618 kWh £640 £162 £802 £8,611 10.7 yrs £7,434
5 kW 5058 kWh 3035 kWh 2023 kWh £801 £202 £1,003 £10,239 10.2 yrs £9,817
6 kW 6069 kWh 3641 kWh 2428 kWh £961 £243 £1,203 £11,867 9.9 yrs £12,201
7 kW 7081 kWh 4248 kWh 2832 kWh £1,121 £283 £1,404 £13,494 9.6 yrs £14,584
8 kW 8092 kWh 4855 kWh 3237 kWh £1,281 £324 £1,604 £15,122 9.4 yrs £16,968

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: £1,086, 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 2023 kWh 1416 kWh 607 kWh £374 £61 £434 £6,756 15.6 yrs £1,930
3 kW 3035 kWh 2124 kWh 910 kWh £560 £91 £651 £8,383 12.9 yrs £4,645
4 kW 4046 kWh 2832 kWh 1214 kWh £747 £121 £869 £10,011 11.5 yrs £7,359
5 kW 5058 kWh 3540 kWh 1517 kWh £934 £152 £1,086 £11,639 10.7 yrs £10,074
6 kW 6069 kWh 4248 kWh 1821 kWh £1,121 £182 £1,303 £13,267 10.2 yrs £12,789
7 kW 7081 kWh 4956 kWh 2124 kWh £1,307 £212 £1,520 £14,894 9.8 yrs £15,504
8 kW 8092 kWh 5664 kWh 2428 kWh £1,494 £243 £1,737 £16,522 9.5 yrs £18,219

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: £1,111, 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 2023 kWh 1477 kWh 546 kWh £390 £55 £444 £8,506 19.1 yrs £379
3 kW 3035 kWh 2215 kWh 819 kWh £584 £82 £666 £10,133 15.2 yrs £3,193
4 kW 4046 kWh 2954 kWh 1092 kWh £779 £109 £888 £11,761 13.2 yrs £6,007
5 kW 5058 kWh 3692 kWh 1366 kWh £974 £137 £1,111 £13,389 12.1 yrs £8,821
6 kW 6069 kWh 4430 kWh 1639 kWh £1,169 £164 £1,333 £15,017 11.3 yrs £11,636
7 kW 7081 kWh 5169 kWh 1912 kWh £1,364 £191 £1,555 £16,644 10.7 yrs £14,450
8 kW 8092 kWh 5907 kWh 2185 kWh £1,558 £218 £1,777 £18,272 10.3 yrs £17,264

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: £1,127, Upfront: £15,139, 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 2023 kWh 1517 kWh 506 kWh £400 £51 £451 £10,256 22.7 yrs £-1,239
3 kW 3035 kWh 2276 kWh 759 kWh £600 £76 £676 £11,883 17.6 yrs £1,642
4 kW 4046 kWh 3035 kWh 1012 kWh £801 £101 £902 £13,511 15.0 yrs £4,522
5 kW 5058 kWh 3793 kWh 1264 kWh £1,001 £126 £1,127 £15,139 13.4 yrs £7,403
6 kW 6069 kWh 4552 kWh 1517 kWh £1,201 £152 £1,352 £16,767 12.4 yrs £10,283
7 kW 7081 kWh 5310 kWh 1770 kWh £1,401 £177 £1,578 £18,394 11.7 yrs £13,164
8 kW 8092 kWh 6069 kWh 2023 kWh £1,601 £202 £1,803 £20,022 11.1 yrs £16,044

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: £1,144, 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 2023 kWh 1558 kWh 465 kWh £411 £47 £457 £12,706 27.8 yrs £-3,556
3 kW 3035 kWh 2337 kWh 698 kWh £616 £70 £686 £14,333 20.9 yrs £-610
4 kW 4046 kWh 3115 kWh 931 kWh £822 £93 £915 £15,961 17.4 yrs £2,337
5 kW 5058 kWh 3894 kWh 1163 kWh £1,027 £116 £1,144 £17,589 15.4 yrs £5,284
6 kW 6069 kWh 4673 kWh 1396 kWh £1,233 £140 £1,372 £19,217 14.0 yrs £8,231
7 kW 7081 kWh 5452 kWh 1629 kWh £1,438 £163 £1,601 £20,844 13.0 yrs £11,178
8 kW 8092 kWh 6231 kWh 1861 kWh £1,644 £186 £1,830 £22,472 12.3 yrs £14,125

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 South Cambridgeshire

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 CB24

Figures below are tailored to CB24 — click through for full league tables.

Big-Roof Britain Rank #623 of 2182
5.4 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #428 of 2996
9.7 years (UK avg 10.8 years)
~£1,005 /yr • £9,767 upfront
Standing-Charge Drag Rank #412 of 2996
19.6% (UK avg 26.6%) drag on savings
£197 fixed • ~£1,005 /yr value
Aspect Penalty View ranking →
East −22.6% West −20.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CB24

Monthly generation per kilowatt of solar panels

kWh 40 Jan 55 Feb 86 Mar 113 Apr 120 May 119 Jun 121 Jul 110 Aug 96 Sep 68 Oct 48 Nov 36 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 51.8% of an average month (Dec–Feb)

Best / worst month: Jul / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 44 kWh per month; the average month produces around 84 kWh. So a typical 4 kW home system would generate roughly 175 kWh in winter, or 337 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
1012kWh/kW
A 1 kW system generates ~1012 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: 78% • Flats: 8% • Bungalows: 13% Based on 10,322 properties

Coverage

South Cambridgeshire (96%)|Cambridge (4%)

Areas Covered

Histon & Impington, Longstanton, Cottenham, Over & Willingham, Swavesey, Milton & Waterbeach, Abbey, Coleridge + 1 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 Eastern

CB4 (South Cambridgeshire)
≈6.0 km away
Local sunshine: ~1,010 kWh/kWp · -0% vs CB24
CB3 (South Cambridgeshire)
≈8.5 km away
Local sunshine: ~1,010 kWh/kWp · -0% vs CB24
CB5 (Cambridge)
≈8.9 km away
Local sunshine: ~1,009 kWh/kWp · -0% vs CB24
CB25 (East Cambridgeshire)
≈10.0 km away
Local sunshine: ~1,009 kWh/kWp · -0% vs CB24
CB1 (Cambridge)
≈10.7 km away
Local sunshine: ~1,013 kWh/kWp · +0% vs CB24
CB23 (South Cambridgeshire)
≈11.9 km away
Local sunshine: ~1,015 kWh/kWp · +0% vs CB24

Similar sunshine across the UK

BA9 (Somerset)
~1,012 kWh/kWp · +0% vs CB24
GU8 (Waverley)
~1,011 kWh/kWp · -0% vs CB24
BS28 (Somerset)
~1,012 kWh/kWp · +0% vs CB24