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Solar panel cost in City of London (EC3V)

See realistic solar installation costs, savings and payback for EC3V (City of London) 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
10.0 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£979
What you save every year
Profit Over 25 Years
£14,710
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 987 kWh/kW — 4 below the regional median (991).

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 987 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)
987 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: £816, Upfront: £8,139, Break-even: 10.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1973 kWh 789 kWh 1184 kWh £208 £118 £326 £3,256 10.0 yrs £3,272
3 kW 2960 kWh 1184 kWh 1776 kWh £312 £178 £490 £4,883 10.0 yrs £4,907
4 kW 3946 kWh 1578 kWh 2368 kWh £416 £237 £653 £6,511 10.0 yrs £6,543
5 kW 4933 kWh 1973 kWh 2960 kWh £520 £296 £816 £8,139 10.0 yrs £8,179
6 kW 5919 kWh 2368 kWh 3552 kWh £624 £355 £979 £9,767 10.0 yrs £9,815
7 kW 6906 kWh 2762 kWh 4144 kWh £728 £414 £1,142 £11,394 10.0 yrs £11,450
8 kW 7892 kWh 3157 kWh 4735 kWh £832 £474 £1,305 £13,022 10.0 yrs £13,086

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: £977, Upfront: £10,239, Break-even: 10.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1973 kWh 1184 kWh 789 kWh £312 £79 £391 £5,356 13.7 yrs £2,462
3 kW 2960 kWh 1776 kWh 1184 kWh £468 £118 £586 £6,983 11.9 yrs £4,743
4 kW 3946 kWh 2368 kWh 1578 kWh £624 £158 £782 £8,611 11.0 yrs £7,024
5 kW 4933 kWh 2960 kWh 1973 kWh £780 £197 £977 £10,239 10.5 yrs £9,305
6 kW 5919 kWh 3552 kWh 2368 kWh £936 £237 £1,173 £11,867 10.1 yrs £11,586
7 kW 6906 kWh 4144 kWh 2762 kWh £1,092 £276 £1,368 £13,494 9.9 yrs £13,867
8 kW 7892 kWh 4735 kWh 3157 kWh £1,248 £316 £1,564 £15,122 9.7 yrs £16,148

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: £1,058, Upfront: £11,639, 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 1973 kWh 1381 kWh 592 kWh £364 £59 £423 £6,756 16.0 yrs £1,707
3 kW 2960 kWh 2072 kWh 888 kWh £546 £89 £635 £8,383 13.2 yrs £4,311
4 kW 3946 kWh 2762 kWh 1184 kWh £728 £118 £846 £10,011 11.8 yrs £6,914
5 kW 4933 kWh 3453 kWh 1480 kWh £910 £148 £1,058 £11,639 11.0 yrs £9,518
6 kW 5919 kWh 4144 kWh 1776 kWh £1,092 £178 £1,269 £13,267 10.5 yrs £12,122
7 kW 6906 kWh 4834 kWh 2072 kWh £1,274 £207 £1,481 £14,894 10.1 yrs £14,725
8 kW 7892 kWh 5525 kWh 2368 kWh £1,456 £237 £1,693 £16,522 9.8 yrs £17,329

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: £1,082, Upfront: £13,389, Break-even: 12.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1973 kWh 1440 kWh 533 kWh £380 £53 £433 £8,506 19.7 yrs £151
3 kW 2960 kWh 2161 kWh 799 kWh £569 £80 £649 £10,133 15.6 yrs £2,851
4 kW 3946 kWh 2881 kWh 1065 kWh £759 £107 £866 £11,761 13.6 yrs £5,552
5 kW 4933 kWh 3601 kWh 1332 kWh £949 £133 £1,082 £13,389 12.4 yrs £8,252
6 kW 5919 kWh 4321 kWh 1598 kWh £1,139 £160 £1,298 £15,017 11.6 yrs £10,952
7 kW 6906 kWh 5041 kWh 1865 kWh £1,328 £186 £1,515 £16,644 11.0 yrs £13,653
8 kW 7892 kWh 5762 kWh 2131 kWh £1,518 £213 £1,731 £18,272 10.6 yrs £16,353

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: £1,098, Upfront: £15,139, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1973 kWh 1480 kWh 493 kWh £390 £49 £439 £10,256 23.3 yrs £-1,470
3 kW 2960 kWh 2220 kWh 740 kWh £585 £74 £659 £11,883 18.0 yrs £1,295
4 kW 3946 kWh 2960 kWh 987 kWh £780 £99 £879 £13,511 15.4 yrs £4,060
5 kW 4933 kWh 3700 kWh 1233 kWh £975 £123 £1,098 £15,139 13.8 yrs £6,824
6 kW 5919 kWh 4440 kWh 1480 kWh £1,170 £148 £1,318 £16,767 12.7 yrs £9,589
7 kW 6906 kWh 5179 kWh 1726 kWh £1,365 £173 £1,537 £18,394 12.0 yrs £12,354
8 kW 7892 kWh 5919 kWh 1973 kWh £1,560 £197 £1,757 £20,022 11.4 yrs £15,119

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: £1,114, Upfront: £17,589, Break-even: 15.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1973 kWh 1519 kWh 454 kWh £400 £45 £446 £12,706 28.5 yrs £-3,791
3 kW 2960 kWh 2279 kWh 681 kWh £601 £68 £669 £14,333 21.4 yrs £-962
4 kW 3946 kWh 3039 kWh 908 kWh £801 £91 £891 £15,961 17.9 yrs £1,868
5 kW 4933 kWh 3798 kWh 1135 kWh £1,001 £113 £1,114 £17,589 15.8 yrs £4,697
6 kW 5919 kWh 4558 kWh 1361 kWh £1,201 £136 £1,337 £19,217 14.4 yrs £7,527
7 kW 6906 kWh 5318 kWh 1588 kWh £1,401 £159 £1,560 £20,844 13.4 yrs £10,356
8 kW 7892 kWh 6077 kWh 1815 kWh £1,601 £182 £1,783 £22,472 12.6 yrs £13,185

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 City of London

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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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.

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Insights for EC3V

Figures below are tailored to EC3V — click through for full league tables.

Solar Payback Index Rank #1078 of 2996
10.0 years (UK avg 10.8 years)
~£979 /yr • £9,767 upfront
Standing-Charge Drag Rank #67 of 2996
16.6% (UK avg 26.6%) drag on savings
£163 fixed • ~£979 /yr value
Aspect Penalty View ranking →
East −22.5% West −19.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in EC3V

Monthly generation per kilowatt of solar panels

kWh 40 Jan 52 Feb 84 Mar 111 Apr 116 May 119 Jun 120 Jul 107 Aug 92 Sep 66 Oct 46 Nov 34 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.9% 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 82 kWh. So a typical 4 kW home system would generate roughly 167 kWh in winter, or 329 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.35p/kWh
Daily Fixed Charge
44.78p/day
Local Sunshine
987kWh/kW
A 1 kW system generates ~987 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For eligible homes in this area

Local Property Data

Property Types

Houses: 0% • Flats: 100% • Bungalows: 0% Based on 12 properties

Coverage

City of London (95%)|Islington (5%)

Areas Covered

Langbourn, Cornhill, Lime Street, Candlewick, Walbrook, Clerkenwell, Bridge, Aldgate

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

EC3M (City of London)
≈0.2 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V
EC2N (City of London)
≈0.3 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V
EC3B (City of London)
≈0.3 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V
EC4N (City of London)
≈0.4 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V
EC3R (City of London)
≈0.4 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V
EC3A (City of London)
≈0.4 km away
Local sunshine: ~989 kWh/kWp · +0% vs EC3V

Similar sunshine across the UK

LA16 (Westmorland and Furness)
~987 kWh/kWp · +0% vs EC3V
LU2 (Luton)
~987 kWh/kWp · +0% vs EC3V
OX1 (Oxford)
~987 kWh/kWp · +0% vs EC3V