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Solar panel cost in Islington (EC1P)

See realistic solar installation costs, savings and payback for EC1P (Islington) 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
£978
What you save every year
Profit Over 25 Years
£14,684
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 986 kWh/kW — 5 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 986 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)
986 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: £815, 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 1971 kWh 788 kWh 1183 kWh £208 £118 £326 £3,256 10.0 yrs £3,265
3 kW 2957 kWh 1183 kWh 1774 kWh £312 £177 £489 £4,883 10.0 yrs £4,897
4 kW 3942 kWh 1577 kWh 2365 kWh £415 £237 £652 £6,511 10.0 yrs £6,529
5 kW 4928 kWh 1971 kWh 2957 kWh £519 £296 £815 £8,139 10.0 yrs £8,162
6 kW 5913 kWh 2365 kWh 3548 kWh £623 £355 £978 £9,767 10.0 yrs £9,794
7 kW 6899 kWh 2759 kWh 4139 kWh £727 £414 £1,141 £11,394 10.0 yrs £11,426
8 kW 7884 kWh 3154 kWh 4730 kWh £831 £473 £1,304 £13,022 10.0 yrs £13,059

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: £976, 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 1971 kWh 1183 kWh 788 kWh £312 £79 £390 £5,356 13.7 yrs £2,454
3 kW 2957 kWh 1774 kWh 1183 kWh £467 £118 £586 £6,983 11.9 yrs £4,731
4 kW 3942 kWh 2365 kWh 1577 kWh £623 £158 £781 £8,611 11.0 yrs £7,007
5 kW 4928 kWh 2957 kWh 1971 kWh £779 £197 £976 £10,239 10.5 yrs £9,284
6 kW 5913 kWh 3548 kWh 2365 kWh £935 £237 £1,171 £11,867 10.1 yrs £11,561
7 kW 6899 kWh 4139 kWh 2759 kWh £1,091 £276 £1,367 £13,494 9.9 yrs £13,838
8 kW 7884 kWh 4730 kWh 3154 kWh £1,246 £315 £1,562 £15,122 9.7 yrs £16,115

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: £1,057, 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 1971 kWh 1380 kWh 591 kWh £364 £59 £423 £6,756 16.0 yrs £1,698
3 kW 2957 kWh 2070 kWh 887 kWh £545 £89 £634 £8,383 13.2 yrs £4,297
4 kW 3942 kWh 2759 kWh 1183 kWh £727 £118 £845 £10,011 11.8 yrs £6,897
5 kW 4928 kWh 3449 kWh 1478 kWh £909 £148 £1,057 £11,639 11.0 yrs £9,496
6 kW 5913 kWh 4139 kWh 1774 kWh £1,091 £177 £1,268 £13,267 10.5 yrs £12,095
7 kW 6899 kWh 4829 kWh 2070 kWh £1,272 £207 £1,479 £14,894 10.1 yrs £14,694
8 kW 7884 kWh 5519 kWh 2365 kWh £1,454 £237 £1,691 £16,522 9.8 yrs £17,293

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: £1,081, 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 1971 kWh 1439 kWh 532 kWh £379 £53 £432 £8,506 19.7 yrs £142
3 kW 2957 kWh 2158 kWh 798 kWh £569 £80 £649 £10,133 15.6 yrs £2,837
4 kW 3942 kWh 2878 kWh 1064 kWh £758 £106 £865 £11,761 13.6 yrs £5,533
5 kW 4928 kWh 3597 kWh 1330 kWh £948 £133 £1,081 £13,389 12.4 yrs £8,229
6 kW 5913 kWh 4317 kWh 1597 kWh £1,137 £160 £1,297 £15,017 11.6 yrs £10,925
7 kW 6899 kWh 5036 kWh 1863 kWh £1,327 £186 £1,513 £16,644 11.0 yrs £13,621
8 kW 7884 kWh 5755 kWh 2129 kWh £1,517 £213 £1,729 £18,272 10.6 yrs £16,317

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: £1,097, 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 1971 kWh 1478 kWh 493 kWh £390 £49 £439 £10,256 23.4 yrs £-1,479
3 kW 2957 kWh 2217 kWh 739 kWh £584 £74 £658 £11,883 18.1 yrs £1,281
4 kW 3942 kWh 2957 kWh 986 kWh £779 £99 £878 £13,511 15.4 yrs £4,041
5 kW 4928 kWh 3696 kWh 1232 kWh £974 £123 £1,097 £15,139 13.8 yrs £6,801
6 kW 5913 kWh 4435 kWh 1478 kWh £1,169 £148 £1,316 £16,767 12.7 yrs £9,562
7 kW 6899 kWh 5174 kWh 1725 kWh £1,363 £172 £1,536 £18,394 12.0 yrs £12,322
8 kW 7884 kWh 5913 kWh 1971 kWh £1,558 £197 £1,755 £20,022 11.4 yrs £15,082

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: £1,113, 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 1971 kWh 1518 kWh 453 kWh £400 £45 £445 £12,706 28.5 yrs £-3,801
3 kW 2957 kWh 2277 kWh 680 kWh £600 £68 £668 £14,333 21.5 yrs £-976
4 kW 3942 kWh 3035 kWh 907 kWh £800 £91 £890 £15,961 17.9 yrs £1,849
5 kW 4928 kWh 3794 kWh 1133 kWh £1,000 £113 £1,113 £17,589 15.8 yrs £4,674
6 kW 5913 kWh 4553 kWh 1360 kWh £1,200 £136 £1,336 £19,217 14.4 yrs £7,498
7 kW 6899 kWh 5312 kWh 1587 kWh £1,400 £159 £1,558 £20,844 13.4 yrs £10,323
8 kW 7884 kWh 6071 kWh 1813 kWh £1,600 £181 £1,781 £22,472 12.6 yrs £13,148

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 Islington

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 EC1P

Figures below are tailored to EC1P — click through for full league tables.

Solar Payback Index Rank #1062 of 2996
10.0 years (UK avg 10.8 years)
~£979 /yr • £9,767 upfront
Standing-Charge Drag Rank #51 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 EC1P

Monthly generation per kilowatt of solar panels

kWh 40 Jan 52 Feb 84 Mar 111 Apr 115 May 119 Jun 119 Jul 107 Aug 92 Sep 67 Oct 47 Nov 34 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 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
986kWh/kW
A 1 kW system generates ~986 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

No EPC data available for this outcode

Coverage

Islington (100%)

Areas Covered

Clerkenwell

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

EC4P (Islington)
≈0.0 km away
Local sunshine: ~986 kWh/kWp · +0% vs EC1P
EC2P (Islington)
≈0.0 km away
Local sunshine: ~986 kWh/kWp · +0% vs EC1P
EC3P (Islington)
≈0.0 km away
Local sunshine: ~986 kWh/kWp · +0% vs EC1P
EC50 (Islington)
≈0.0 km away
Local sunshine: ~986 kWh/kWp · +0% vs EC1P
EC1R (Islington)
≈0.2 km away
Local sunshine: ~988 kWh/kWp · +0% vs EC1P
WC1X (Camden)
≈0.3 km away
Local sunshine: ~986 kWh/kWp · -0% vs EC1P

Similar sunshine across the UK

FY7 (Wyre)
~986 kWh/kWp · +0% vs EC1P
LE15 (Rutland)
~985 kWh/kWp · -0% vs EC1P
GU47 (Bracknell Forest)
~986 kWh/kWp · +0% vs EC1P