Independent solar numbers for your postcode using official UK data
Home Regions Guides Compare quotes Solar assistant
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality Seasonal Solar Output

Solar panel cost in East Cambridgeshire (CB25)

See realistic solar installation costs, savings and payback for CB25 (East 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
£1,002
What you save every year
Profit Over 25 Years
£15,294
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 1009 kWh/kW — 0 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 1009 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)
1009 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 2019 kWh 807 kWh 1211 kWh £213 £121 £334 £3,256 9.7 yrs £3,427
3 kW 3028 kWh 1211 kWh 1817 kWh £320 £182 £501 £4,883 9.7 yrs £5,141
4 kW 4037 kWh 1615 kWh 2422 kWh £426 £242 £668 £6,511 9.7 yrs £6,855
5 kW 5047 kWh 2019 kWh 3028 kWh £533 £303 £835 £8,139 9.7 yrs £8,568
6 kW 6056 kWh 2422 kWh 3634 kWh £639 £363 £1,002 £9,767 9.7 yrs £10,282
7 kW 7066 kWh 2826 kWh 4239 kWh £746 £424 £1,169 £11,394 9.7 yrs £11,995
8 kW 8075 kWh 3230 kWh 4845 kWh £852 £484 £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: £1,001, 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 2019 kWh 1211 kWh 807 kWh £320 £81 £400 £5,356 13.4 yrs £2,650
3 kW 3028 kWh 1817 kWh 1211 kWh £479 £121 £600 £6,983 11.6 yrs £5,025
4 kW 4037 kWh 2422 kWh 1615 kWh £639 £161 £801 £8,611 10.8 yrs £7,400
5 kW 5047 kWh 3028 kWh 2019 kWh £799 £202 £1,001 £10,239 10.2 yrs £9,775
6 kW 6056 kWh 3634 kWh 2422 kWh £959 £242 £1,201 £11,867 9.9 yrs £12,150
7 kW 7066 kWh 4239 kWh 2826 kWh £1,118 £283 £1,401 £13,494 9.6 yrs £14,525
8 kW 8075 kWh 4845 kWh 3230 kWh £1,278 £323 £1,601 £15,122 9.4 yrs £16,900

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 2019 kWh 1413 kWh 606 kWh £373 £61 £433 £6,756 15.6 yrs £1,911
3 kW 3028 kWh 2120 kWh 908 kWh £559 £91 £650 £8,383 12.9 yrs £4,617
4 kW 4037 kWh 2826 kWh 1211 kWh £746 £121 £867 £10,011 11.6 yrs £7,322
5 kW 5047 kWh 3533 kWh 1514 kWh £932 £151 £1,083 £11,639 10.7 yrs £10,028
6 kW 6056 kWh 4239 kWh 1817 kWh £1,118 £182 £1,300 £13,267 10.2 yrs £12,734
7 kW 7066 kWh 4946 kWh 2120 kWh £1,305 £212 £1,517 £14,894 9.8 yrs £15,439
8 kW 8075 kWh 5652 kWh 2422 kWh £1,491 £242 £1,733 £16,522 9.5 yrs £18,145

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 2019 kWh 1474 kWh 545 kWh £389 £55 £443 £8,506 19.2 yrs £360
3 kW 3028 kWh 2210 kWh 818 kWh £583 £82 £665 £10,133 15.2 yrs £3,164
4 kW 4037 kWh 2947 kWh 1090 kWh £778 £109 £887 £11,761 13.3 yrs £5,969
5 kW 5047 kWh 3684 kWh 1363 kWh £972 £136 £1,108 £13,389 12.1 yrs £8,774
6 kW 6056 kWh 4421 kWh 1635 kWh £1,166 £164 £1,330 £15,017 11.3 yrs £11,579
7 kW 7066 kWh 5158 kWh 1908 kWh £1,361 £191 £1,551 £16,644 10.7 yrs £14,384
8 kW 8075 kWh 5895 kWh 2180 kWh £1,555 £218 £1,773 £18,272 10.3 yrs £17,189

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: £1,125, 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 2019 kWh 1514 kWh 505 kWh £399 £50 £450 £10,256 22.8 yrs £-1,258
3 kW 3028 kWh 2271 kWh 757 kWh £599 £76 £675 £11,883 17.6 yrs £1,613
4 kW 4037 kWh 3028 kWh 1009 kWh £799 £101 £900 £13,511 15.0 yrs £4,484
5 kW 5047 kWh 3785 kWh 1262 kWh £999 £126 £1,125 £15,139 13.5 yrs £7,355
6 kW 6056 kWh 4542 kWh 1514 kWh £1,198 £151 £1,350 £16,767 12.4 yrs £10,226
7 kW 7066 kWh 5299 kWh 1766 kWh £1,398 £177 £1,575 £18,394 11.7 yrs £13,097
8 kW 8075 kWh 6056 kWh 2019 kWh £1,598 £202 £1,799 £20,022 11.1 yrs £15,968

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 2019 kWh 1554 kWh 464 kWh £410 £46 £456 £12,706 27.8 yrs £-3,576
3 kW 3028 kWh 2332 kWh 696 kWh £615 £70 £685 £14,333 20.9 yrs £-639
4 kW 4037 kWh 3109 kWh 929 kWh £820 £93 £913 £15,961 17.5 yrs £2,298
5 kW 5047 kWh 3886 kWh 1161 kWh £1,025 £116 £1,141 £17,589 15.4 yrs £5,235
6 kW 6056 kWh 4663 kWh 1393 kWh £1,230 £139 £1,369 £19,217 14.0 yrs £8,173
7 kW 7066 kWh 5440 kWh 1625 kWh £1,435 £163 £1,598 £20,844 13.0 yrs £11,110
8 kW 8075 kWh 6218 kWh 1857 kWh £1,640 £186 £1,826 £22,472 12.3 yrs £14,047

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 East 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.

Compare solar quotes before you sign

Check what MCS certification means

Understand DNO, G98 and G99 export limits

New quote check

Want a quote sanity check for CB25?

Share the first part of your postcode and a few basics. We’ll help you check whether system size, battery, export and paperwork assumptions look sensible before you commit to installer conversations.

This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

Request a quote sanity check →

Insights for CB25

Figures below are tailored to CB25 — click through for full league tables.

Big-Roof Britain Rank #529 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #429 of 2996
9.7 years (UK avg 10.8 years)
~£1,002 /yr • £9,767 upfront
Standing-Charge Drag Rank #443 of 2996
19.7% (UK avg 26.6%) drag on savings
£197 fixed • ~£1,002 /yr value
Aspect Penalty View ranking →
East −22.6% West −20.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CB25

Monthly generation per kilowatt of solar panels

kWh 38 Jan 54 Feb 86 Mar 114 Apr 120 May 120 Jun 121 Jul 110 Aug 95 Sep 68 Oct 47 Nov 35 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.4% 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 42 kWh per month; the average month produces around 84 kWh. So a typical 4 kW home system would generate roughly 170 kWh in winter, or 336 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
1009kWh/kW
A 1 kW system generates ~1009 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: 72% • Flats: 9% • Bungalows: 19% Based on 5,061 properties

Coverage

East Cambridgeshire (56%)|South Cambridgeshire (37%)|Cambridge (7%)

Areas Covered

Milton & Waterbeach, Burwell, Bottisham, Abbey, Fen Ditton & Fulbourn, Stretham, Cottenham

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

CB5 (Cambridge)
≈7.5 km away
Local sunshine: ~1,009 kWh/kWp · +0% vs CB25
CB4 (South Cambridgeshire)
≈9.1 km away
Local sunshine: ~1,010 kWh/kWp · +0% vs CB25
CB24 (South Cambridgeshire)
≈10.0 km away
Local sunshine: ~1,012 kWh/kWp · +0% vs CB25
CB1 (Cambridge)
≈10.7 km away
Local sunshine: ~1,013 kWh/kWp · +0% vs CB25
CB8 (West Suffolk)
≈11.1 km away
Local sunshine: ~1,011 kWh/kWp · +0% vs CB25
CB2 (Cambridge)
≈12.9 km away
Local sunshine: ~1,013 kWh/kWp · +0% vs CB25

Similar sunshine across the UK

CF24 (Cardiff)
~1,009 kWh/kWp · -0% vs CB25
CF2 (Cardiff)
~1,009 kWh/kWp · -0% vs CB25
RG16 (West Berkshire)
~1,009 kWh/kWp · -0% vs CB25