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Solar panel cost in Crawley (RH11)

See realistic solar installation costs, savings and payback for RH11 (Crawley) 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
£8,139
What you pay to get started
Annual Benefit
£840
What you save every year
Profit Over 25 Years
£12,872
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 South East, the current unit rate is 26.67p/kWh with a 54.45p/day standing charge. Your postcode’s south-facing sunshine yield is 1008 kWh/kW — 21 below the regional median (1029).

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 1008 kWh per year on a south-facing roof. We value self-used electricity at 26.7p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.7p/kWh
Standing charge
54.5p/day
Sunshine yield (south)
1008 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: £840, 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 2017 kWh 807 kWh 1210 kWh £215 £121 £336 £3,256 9.7 yrs £3,468
3 kW 3025 kWh 1210 kWh 1815 kWh £323 £182 £504 £4,883 9.7 yrs £5,202
4 kW 4034 kWh 1613 kWh 2420 kWh £430 £242 £672 £6,511 9.7 yrs £6,936
5 kW 5042 kWh 2017 kWh 3025 kWh £538 £303 £840 £8,139 9.7 yrs £8,670
6 kW 6051 kWh 2420 kWh 3630 kWh £645 £363 £1,009 £9,767 9.7 yrs £10,404
7 kW 7059 kWh 2824 kWh 4235 kWh £753 £424 £1,177 £11,394 9.7 yrs £12,138
8 kW 8067 kWh 3227 kWh 4840 kWh £861 £484 £1,345 £13,022 9.7 yrs £13,872

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: £1,009, 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 2017 kWh 1210 kWh 807 kWh £323 £81 £403 £5,356 13.3 yrs £2,713
3 kW 3025 kWh 1815 kWh 1210 kWh £484 £121 £605 £6,983 11.5 yrs £5,119
4 kW 4034 kWh 2420 kWh 1613 kWh £645 £161 £807 £8,611 10.7 yrs £7,525
5 kW 5042 kWh 3025 kWh 2017 kWh £807 £202 £1,009 £10,239 10.2 yrs £9,932
6 kW 6051 kWh 3630 kWh 2420 kWh £968 £242 £1,210 £11,867 9.8 yrs £12,338
7 kW 7059 kWh 4235 kWh 2824 kWh £1,130 £282 £1,412 £13,494 9.6 yrs £14,745
8 kW 8067 kWh 4840 kWh 3227 kWh £1,291 £323 £1,614 £15,122 9.4 yrs £17,151

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: £1,093, 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 2017 kWh 1412 kWh 605 kWh £377 £61 £437 £6,756 15.5 yrs £1,985
3 kW 3025 kWh 2118 kWh 908 kWh £565 £91 £656 £8,383 12.8 yrs £4,728
4 kW 4034 kWh 2824 kWh 1210 kWh £753 £121 £874 £10,011 11.5 yrs £7,470
5 kW 5042 kWh 3530 kWh 1513 kWh £941 £151 £1,093 £11,639 10.7 yrs £10,213
6 kW 6051 kWh 4235 kWh 1815 kWh £1,130 £182 £1,311 £13,267 10.1 yrs £12,955
7 kW 7059 kWh 4941 kWh 2118 kWh £1,318 £212 £1,530 £14,894 9.7 yrs £15,698
8 kW 8067 kWh 5647 kWh 2420 kWh £1,506 £242 £1,748 £16,522 9.5 yrs £18,441

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: £1,118, Upfront: £13,389, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2017 kWh 1472 kWh 545 kWh £393 £54 £447 £8,506 19.0 yrs £437
3 kW 3025 kWh 2208 kWh 817 kWh £589 £82 £671 £10,133 15.1 yrs £3,280
4 kW 4034 kWh 2945 kWh 1089 kWh £785 £109 £894 £11,761 13.2 yrs £6,124
5 kW 5042 kWh 3681 kWh 1361 kWh £982 £136 £1,118 £13,389 12.0 yrs £8,967
6 kW 6051 kWh 4417 kWh 1634 kWh £1,178 £163 £1,341 £15,017 11.2 yrs £11,811
7 kW 7059 kWh 5153 kWh 1906 kWh £1,374 £191 £1,565 £16,644 10.6 yrs £14,654
8 kW 8067 kWh 5889 kWh 2178 kWh £1,571 £218 £1,788 £18,272 10.2 yrs £17,497

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: £1,135, Upfront: £15,139, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2017 kWh 1513 kWh 504 kWh £403 £50 £454 £10,256 22.6 yrs £-1,179
3 kW 3025 kWh 2269 kWh 756 kWh £605 £76 £681 £11,883 17.5 yrs £1,732
4 kW 4034 kWh 3025 kWh 1008 kWh £807 £101 £908 £13,511 14.9 yrs £4,643
5 kW 5042 kWh 3782 kWh 1261 kWh £1,009 £126 £1,135 £15,139 13.3 yrs £7,553
6 kW 6051 kWh 4538 kWh 1513 kWh £1,210 £151 £1,362 £16,767 12.3 yrs £10,464
7 kW 7059 kWh 5294 kWh 1765 kWh £1,412 £176 £1,588 £18,394 11.6 yrs £13,375
8 kW 8067 kWh 6051 kWh 2017 kWh £1,614 £202 £1,815 £20,022 11.0 yrs £16,285

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: £1,151, Upfront: £17,589, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2017 kWh 1553 kWh 464 kWh £414 £46 £461 £12,706 27.6 yrs £-3,494
3 kW 3025 kWh 2329 kWh 696 kWh £621 £70 £691 £14,333 20.7 yrs £-516
4 kW 4034 kWh 3106 kWh 928 kWh £828 £93 £921 £15,961 17.3 yrs £2,462
5 kW 5042 kWh 3882 kWh 1160 kWh £1,035 £116 £1,151 £17,589 15.3 yrs £5,440
6 kW 6051 kWh 4659 kWh 1392 kWh £1,243 £139 £1,382 £19,217 13.9 yrs £8,418
7 kW 7059 kWh 5435 kWh 1624 kWh £1,450 £162 £1,612 £20,844 12.9 yrs £11,395
8 kW 8067 kWh 6212 kWh 1856 kWh £1,657 £186 £1,842 £22,472 12.2 yrs £14,373

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 Crawley

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 RH11

Figures below are tailored to RH11 — click through for full league tables.

Big-Roof Britain Rank #1610 of 2182
4.6 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #512 of 2996
9.7 years (UK avg 10.8 years)
~£840 /yr • £8,139 upfront
Standing-Charge Drag Rank #1146 of 2996
23.7% (UK avg 26.6%) drag on savings
£199 fixed • ~£840 /yr value
Aspect Penalty View ranking →
East −20.3% West −19.8%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in RH11

Monthly generation per kilowatt of solar panels

kWh 38 Jan 52 Feb 86 Mar 113 Apr 120 May 124 Jun 124 Jul 110 Aug 94 Sep 66 Oct 46 Nov 35 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.7% 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 167 kWh in winter, or 336 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.67p/kWh
Daily Fixed Charge
54.45p/day
Local Sunshine
1008kWh/kW
A 1 kW system generates ~1008 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: 66% • Flats: 29% • Bungalows: 2% Based on 12,754 properties

Coverage

Crawley (93%)|Mid Sussex (5%)|Horsham (2%)

Areas Covered

Three Bridges, Ifield, Langley Green & Tushmore, Broadfield, Bewbush & North Broadfield, Gossops Green & North East Broadfield, Northgate & West Green, Southgate + 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 South East

RH10 (Crawley)
≈1.9 km away
Local sunshine: ~1,005 kWh/kWp · -0% vs RH11
RH77 (Crawley)
≈3.6 km away
Local sunshine: ~1,007 kWh/kWp · -0% vs RH11
RH6 (Reigate and Banstead)
≈7.0 km away
Local sunshine: ~1,005 kWh/kWp · -0% vs RH11
RH12 (Horsham)
≈9.7 km away
Local sunshine: ~1,006 kWh/kWp · -0% vs RH11
RH13 (Horsham)
≈11.2 km away
Local sunshine: ~1,024 kWh/kWp · +2% vs RH11
RH17 (Mid Sussex)
≈12.5 km away
Local sunshine: ~1,033 kWh/kWp · +2% vs RH11

Similar sunshine across the UK

CF14 (Cardiff)
~1,008 kWh/kWp · -0% vs RH11
SG9 (East Hertfordshire)
~1,009 kWh/kWp · +0% vs RH11
PE15 (Fenland)
~1,008 kWh/kWp · -0% vs RH11