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Solar panel cost in Waltham Forest (E11)

See realistic solar installation costs, savings and payback for E11 (Waltham Forest) 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
11.0 years
After this, it's pure profit
Upfront Cost
£5,481
What you pay to get started
Annual Benefit
£499
What you save every year
Profit Over 25 Years
£6,989
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 London, the current unit rate is 26.35p/kWh with a 44.78p/day standing charge. Your postcode’s south-facing sunshine yield is 1005 kWh/kW — 15 above the regional median (991).

Read the full story

A typical roof here lands around 3.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 1005 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
44.8p/day
Sunshine yield (south)
1005 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: £831, Upfront: £9,134, Break-even: 11.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 804 kWh 1206 kWh £212 £121 £333 £3,654 11.0 yrs £2,997
3 kW 3016 kWh 1206 kWh 1809 kWh £318 £181 £499 £5,481 11.0 yrs £4,495
4 kW 4021 kWh 1608 kWh 2412 kWh £424 £241 £665 £7,307 11.0 yrs £5,993
5 kW 5026 kWh 2010 kWh 3016 kWh £530 £302 £831 £9,134 11.0 yrs £7,491
6 kW 6031 kWh 2412 kWh 3619 kWh £636 £362 £998 £10,961 11.0 yrs £8,990
7 kW 7036 kWh 2815 kWh 4222 kWh £742 £422 £1,164 £12,788 11.0 yrs £10,488
8 kW 8041 kWh 3217 kWh 4825 kWh £848 £482 £1,330 £14,615 11.0 yrs £11,986

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £996, Upfront: £11,234, Break-even: 11.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 1206 kWh 804 kWh £318 £80 £398 £5,754 14.4 yrs £2,211
3 kW 3016 kWh 1809 kWh 1206 kWh £477 £121 £597 £7,581 12.7 yrs £4,367
4 kW 4021 kWh 2412 kWh 1608 kWh £636 £161 £797 £9,407 11.8 yrs £6,523
5 kW 5026 kWh 3016 kWh 2010 kWh £795 £201 £996 £11,234 11.3 yrs £8,678
6 kW 6031 kWh 3619 kWh 2412 kWh £954 £241 £1,195 £13,061 10.9 yrs £10,834
7 kW 7036 kWh 4222 kWh 2815 kWh £1,112 £281 £1,394 £14,888 10.7 yrs £12,990
8 kW 8041 kWh 4825 kWh 3217 kWh £1,271 £322 £1,593 £16,715 10.5 yrs £15,145

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,078, Upfront: £12,634, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 1407 kWh 603 kWh £371 £60 £431 £7,154 16.6 yrs £1,469
3 kW 3016 kWh 2111 kWh 905 kWh £556 £90 £647 £8,981 13.9 yrs £3,953
4 kW 4021 kWh 2815 kWh 1206 kWh £742 £121 £862 £10,807 12.5 yrs £6,438
5 kW 5026 kWh 3518 kWh 1508 kWh £927 £151 £1,078 £12,634 11.7 yrs £8,922
6 kW 6031 kWh 4222 kWh 1809 kWh £1,112 £181 £1,293 £14,461 11.2 yrs £11,406
7 kW 7036 kWh 4925 kWh 2111 kWh £1,298 £211 £1,509 £16,288 10.8 yrs £13,891
8 kW 8041 kWh 5629 kWh 2412 kWh £1,483 £241 £1,724 £18,115 10.5 yrs £16,375

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,102, Upfront: £14,384, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 1468 kWh 543 kWh £387 £54 £441 £8,904 20.2 yrs £-84
3 kW 3016 kWh 2201 kWh 814 kWh £580 £81 £661 £10,731 16.2 yrs £2,499
4 kW 4021 kWh 2935 kWh 1086 kWh £773 £109 £882 £12,557 14.2 yrs £5,082
5 kW 5026 kWh 3669 kWh 1357 kWh £967 £136 £1,102 £14,384 13.0 yrs £7,665
6 kW 6031 kWh 4403 kWh 1628 kWh £1,160 £163 £1,323 £16,211 12.3 yrs £10,248
7 kW 7036 kWh 5136 kWh 1900 kWh £1,353 £190 £1,543 £18,038 11.7 yrs £12,831
8 kW 8041 kWh 5870 kWh 2171 kWh £1,547 £217 £1,764 £19,865 11.3 yrs £15,414

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,119, Upfront: £16,134, Break-even: 14.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 1508 kWh 503 kWh £397 £50 £448 £10,654 23.8 yrs £-1,703
3 kW 3016 kWh 2262 kWh 754 kWh £596 £75 £671 £12,481 18.6 yrs £946
4 kW 4021 kWh 3016 kWh 1005 kWh £795 £101 £895 £14,307 16.0 yrs £3,595
5 kW 5026 kWh 3769 kWh 1256 kWh £993 £126 £1,119 £16,134 14.4 yrs £6,244
6 kW 6031 kWh 4523 kWh 1508 kWh £1,192 £151 £1,343 £17,961 13.4 yrs £8,892
7 kW 7036 kWh 5277 kWh 1759 kWh £1,391 £176 £1,566 £19,788 12.6 yrs £11,541
8 kW 8041 kWh 6031 kWh 2010 kWh £1,589 £201 £1,790 £21,615 12.1 yrs £14,190

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,135, Upfront: £18,584, Break-even: 16.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2010 kWh 1548 kWh 462 kWh £408 £46 £454 £13,104 28.9 yrs £-4,021
3 kW 3016 kWh 2322 kWh 694 kWh £612 £69 £681 £14,931 21.9 yrs £-1,307
4 kW 4021 kWh 3096 kWh 925 kWh £816 £92 £908 £16,757 18.4 yrs £1,408
5 kW 5026 kWh 3870 kWh 1156 kWh £1,020 £116 £1,135 £18,584 16.4 yrs £4,122
6 kW 6031 kWh 4644 kWh 1387 kWh £1,224 £139 £1,362 £20,411 15.0 yrs £6,837
7 kW 7036 kWh 5418 kWh 1618 kWh £1,428 £162 £1,589 £22,238 14.0 yrs £9,551
8 kW 8041 kWh 6192 kWh 1850 kWh £1,632 £185 £1,817 £24,065 13.2 yrs £12,266

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,827, 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 Waltham Forest

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 E11

Figures below are tailored to E11 — click through for full league tables.

Big-Roof Britain Rank #2130 of 2182
3.8 kWp (UK avg 5.1 kWp)
~8 panels (≈430 W)
Solar Payback Index Rank #605 of 2996
9.8 years (UK avg 10.8 years)
~£831 /yr • £8,139 upfront
Standing-Charge Drag Rank #417 of 2996
19.6% (UK avg 26.6%) drag on savings
£163 fixed • ~£831 /yr value
Aspect Penalty View ranking →
East −22.0% West −19.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in E11

Monthly generation per kilowatt of solar panels

kWh 40 Jan 52 Feb 85 Mar 112 Apr 119 May 121 Jun 123 Jul 110 Aug 94 Sep 67 Oct 47 Nov 36 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 51.0% 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 43 kWh per month; the average month produces around 84 kWh. So a typical 4 kW home system would generate roughly 171 kWh in winter, or 335 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.35p/kWh
Daily Fixed Charge
44.78p/day
Local Sunshine
1005kWh/kW
A 1 kW system generates ~1005 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
3.0kW
For houses & bungalows in this area

⚠️ This area is predominantly flats. Many residents require freeholder approval for solar installations. System size shown reflects houses and bungalows only.

Local Property Data

Property Types

Houses: 34% • Flats: 60% • Bungalows: 1% Based on 16,324 properties

Coverage

Waltham Forest (77%)|Redbridge (23%)

Areas Covered

Leytonstone, Wanstead Village, Cann Hall, Cathall, Forest, Wanstead Park, Grove Green, South Woodford + 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 London

E10 (Waltham Forest)
≈1.5 km away
Local sunshine: ~992 kWh/kWp · -1% vs E11
E7 (Newham)
≈2.0 km away
Local sunshine: ~1,005 kWh/kWp · -0% vs E11
E20 (Newham)
≈2.3 km away
Local sunshine: ~992 kWh/kWp · -1% vs E11
E12 (Newham)
≈3.0 km away
Local sunshine: ~1,005 kWh/kWp · -0% vs E11
E17 (Waltham Forest)
≈3.0 km away
Local sunshine: ~992 kWh/kWp · -1% vs E11
E15 (Newham)
≈3.2 km away
Local sunshine: ~1,004 kWh/kWp · -0% vs E11

Similar sunshine across the UK

PE7 (Fenland)
~1,005 kWh/kWp · -0% vs E11
RH10 (Crawley)
~1,005 kWh/kWp · -0% vs E11
RH6 (Reigate and Banstead)
~1,005 kWh/kWp · +0% vs E11