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Solar panel cost in Maldon (CM9)

See realistic solar installation costs, savings and payback for CM9 (Maldon) 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
9.3 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£872
What you save every year
Profit Over 25 Years
£13,672
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 1054 kWh/kW — 45 above the regional median (1009).

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 1054 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)
1054 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: £872, Upfront: £8,139, Break-even: 9.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2108 kWh 843 kWh 1265 kWh £222 £126 £349 £3,256 9.3 yrs £3,724
3 kW 3162 kWh 1265 kWh 1897 kWh £334 £190 £523 £4,883 9.3 yrs £5,586
4 kW 4217 kWh 1687 kWh 2530 kWh £445 £253 £698 £6,511 9.3 yrs £7,448
5 kW 5271 kWh 2108 kWh 3162 kWh £556 £316 £872 £8,139 9.3 yrs £9,310
6 kW 6325 kWh 2530 kWh 3795 kWh £667 £379 £1,047 £9,767 9.3 yrs £11,172
7 kW 7379 kWh 2952 kWh 4427 kWh £779 £443 £1,221 £11,394 9.3 yrs £13,034
8 kW 8433 kWh 3373 kWh 5060 kWh £890 £506 £1,396 £13,022 9.3 yrs £14,895

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: £1,045, 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 2108 kWh 1265 kWh 843 kWh £334 £84 £418 £5,356 12.8 yrs £3,005
3 kW 3162 kWh 1897 kWh 1265 kWh £501 £126 £627 £6,983 11.1 yrs £5,558
4 kW 4217 kWh 2530 kWh 1687 kWh £667 £169 £836 £8,611 10.3 yrs £8,110
5 kW 5271 kWh 3162 kWh 2108 kWh £834 £211 £1,045 £10,239 9.8 yrs £10,663
6 kW 6325 kWh 3795 kWh 2530 kWh £1,001 £253 £1,254 £11,867 9.5 yrs £13,216
7 kW 7379 kWh 4427 kWh 2952 kWh £1,168 £295 £1,463 £13,494 9.2 yrs £15,768
8 kW 8433 kWh 5060 kWh 3373 kWh £1,335 £337 £1,672 £15,122 9.0 yrs £18,321

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: £1,131, 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 2108 kWh 1476 kWh 632 kWh £389 £63 £453 £6,756 14.9 yrs £2,296
3 kW 3162 kWh 2214 kWh 949 kWh £584 £95 £679 £8,383 12.3 yrs £5,194
4 kW 4217 kWh 2952 kWh 1265 kWh £779 £126 £905 £10,011 11.1 yrs £8,092
5 kW 5271 kWh 3690 kWh 1581 kWh £973 £158 £1,131 £11,639 10.3 yrs £10,990
6 kW 6325 kWh 4427 kWh 1897 kWh £1,168 £190 £1,358 £13,267 9.8 yrs £13,888
7 kW 7379 kWh 5165 kWh 2214 kWh £1,363 £221 £1,584 £14,894 9.4 yrs £16,786
8 kW 8433 kWh 5903 kWh 2530 kWh £1,557 £253 £1,810 £16,522 9.1 yrs £19,684

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: £1,157, 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 2108 kWh 1539 kWh 569 kWh £406 £57 £463 £8,506 18.4 yrs £753
3 kW 3162 kWh 2309 kWh 854 kWh £609 £85 £694 £10,133 14.6 yrs £3,755
4 kW 4217 kWh 3078 kWh 1138 kWh £812 £114 £926 £11,761 12.7 yrs £6,756
5 kW 5271 kWh 3848 kWh 1423 kWh £1,015 £142 £1,157 £13,389 11.6 yrs £9,758
6 kW 6325 kWh 4617 kWh 1708 kWh £1,218 £171 £1,389 £15,017 10.8 yrs £12,759
7 kW 7379 kWh 5387 kWh 1992 kWh £1,421 £199 £1,620 £16,644 10.3 yrs £15,761
8 kW 8433 kWh 6156 kWh 2277 kWh £1,624 £228 £1,852 £18,272 9.9 yrs £18,763

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: £1,175, 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 2108 kWh 1581 kWh 527 kWh £417 £53 £470 £10,256 21.8 yrs £-859
3 kW 3162 kWh 2372 kWh 791 kWh £626 £79 £705 £11,883 16.9 yrs £2,212
4 kW 4217 kWh 3162 kWh 1054 kWh £834 £105 £940 £13,511 14.4 yrs £5,283
5 kW 5271 kWh 3953 kWh 1318 kWh £1,043 £132 £1,175 £15,139 12.9 yrs £8,353
6 kW 6325 kWh 4744 kWh 1581 kWh £1,251 £158 £1,410 £16,767 11.9 yrs £11,424
7 kW 7379 kWh 5534 kWh 1845 kWh £1,460 £184 £1,644 £18,394 11.2 yrs £14,494
8 kW 8433 kWh 6325 kWh 2108 kWh £1,669 £211 £1,879 £20,022 10.7 yrs £17,565

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: £1,192, 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 2108 kWh 1623 kWh 485 kWh £428 £48 £477 £12,706 26.7 yrs £-3,171
3 kW 3162 kWh 2435 kWh 727 kWh £642 £73 £715 £14,333 20.0 yrs £-31
4 kW 4217 kWh 3247 kWh 970 kWh £857 £97 £953 £15,961 16.7 yrs £3,109
5 kW 5271 kWh 4059 kWh 1212 kWh £1,071 £121 £1,192 £17,589 14.8 yrs £6,248
6 kW 6325 kWh 4870 kWh 1455 kWh £1,285 £145 £1,430 £19,217 13.4 yrs £9,388
7 kW 7379 kWh 5682 kWh 1697 kWh £1,499 £170 £1,669 £20,844 12.5 yrs £12,528
8 kW 8433 kWh 6494 kWh 1940 kWh £1,713 £194 £1,907 £22,472 11.8 yrs £15,668

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 Maldon

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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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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Insights for CM9

Figures below are tailored to CM9 — click through for full league tables.

Big-Roof Britain Rank #1007 of 2182
5.0 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #188 of 2996
9.3 years (UK avg 10.8 years)
~£872 /yr • £8,139 upfront
Standing-Charge Drag Rank #971 of 2996
22.6% (UK avg 26.6%) drag on savings
£197 fixed • ~£872 /yr value
Aspect Penalty View ranking →
East −22.0% West −21.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CM9

Monthly generation per kilowatt of solar panels

kWh 40 Jan 55 Feb 90 Mar 119 Apr 125 May 127 Jun 127 Jul 114 Aug 100 Sep 71 Oct 50 Nov 37 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.1% 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 88 kWh. So a typical 4 kW home system would generate roughly 176 kWh in winter, or 351 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
1054kWh/kW
A 1 kW system generates ~1054 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: 71% • Flats: 14% • Bungalows: 13% Based on 9,607 properties

Coverage

Maldon (99%)|Colchester (1%)

Areas Covered

Maldon North, Heybridge East, Heybridge West, Tolleshunt D'Arcy, Great Totham, Maldon West, Maldon East, Wickham Bishops and Woodham + 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 Eastern

CM3 (Chelmsford)
≈6.9 km away
Local sunshine: ~1,035 kWh/kWp · -2% vs CM9
CM8 (Braintree)
≈7.9 km away
Local sunshine: ~1,050 kWh/kWp · -0% vs CM9
CO5 (Colchester)
≈10.6 km away
Local sunshine: ~1,054 kWh/kWp · -0% vs CM9
CM98 (Chelmsford)
≈11.4 km away
Local sunshine: ~1,036 kWh/kWp · -2% vs CM9
CM99 (Chelmsford)
≈12.5 km away
Local sunshine: ~1,039 kWh/kWp · -1% vs CM9
CM0 (Maldon)
≈13.0 km away
Local sunshine: ~1,099 kWh/kWp · +4% vs CM9

Similar sunshine across the UK

TN22 (Wealden)
~1,055 kWh/kWp · +0% vs CM9
BH22 (Dorset)
~1,055 kWh/kWp · +0% vs CM9
DT11 (Dorset)
~1,055 kWh/kWp · +0% vs CM9