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Solar panel cost in Reigate and Banstead (SM7)

See realistic solar installation costs, savings and payback for SM7 (Reigate and Banstead) 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
9.9 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£991
What you save every year
Profit Over 25 Years
£15,007
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 991 kWh/kW — 38 below the regional median (1029).

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 991 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)
991 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: £826, Upfront: £8,139, Break-even: 9.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1982 kWh 793 kWh 1189 kWh £211 £119 £330 £3,256 9.9 yrs £3,351
3 kW 2973 kWh 1189 kWh 1784 kWh £317 £178 £495 £4,883 9.9 yrs £5,026
4 kW 3964 kWh 1585 kWh 2378 kWh £423 £238 £661 £6,511 9.9 yrs £6,702
5 kW 4954 kWh 1982 kWh 2973 kWh £529 £297 £826 £8,139 9.9 yrs £8,377
6 kW 5945 kWh 2378 kWh 3567 kWh £634 £357 £991 £9,767 9.9 yrs £10,053
7 kW 6936 kWh 2774 kWh 4162 kWh £740 £416 £1,156 £11,394 9.9 yrs £11,728
8 kW 7927 kWh 3171 kWh 4756 kWh £846 £476 £1,321 £13,022 9.9 yrs £13,404

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: £991, Upfront: £10,239, 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 1982 kWh 1189 kWh 793 kWh £317 £79 £396 £5,356 13.5 yrs £2,572
3 kW 2973 kWh 1784 kWh 1189 kWh £476 £119 £595 £6,983 11.7 yrs £4,908
4 kW 3964 kWh 2378 kWh 1585 kWh £634 £159 £793 £8,611 10.9 yrs £7,245
5 kW 4954 kWh 2973 kWh 1982 kWh £793 £198 £991 £10,239 10.3 yrs £9,581
6 kW 5945 kWh 3567 kWh 2378 kWh £951 £238 £1,189 £11,867 10.0 yrs £11,917
7 kW 6936 kWh 4162 kWh 2774 kWh £1,110 £277 £1,387 £13,494 9.7 yrs £14,253
8 kW 7927 kWh 4756 kWh 3171 kWh £1,268 £317 £1,586 £15,122 9.5 yrs £16,589

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: £1,074, Upfront: £11,639, Break-even: 10.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1982 kWh 1387 kWh 595 kWh £370 £59 £429 £6,756 15.7 yrs £1,833
3 kW 2973 kWh 2081 kWh 892 kWh £555 £89 £644 £8,383 13.0 yrs £4,500
4 kW 3964 kWh 2774 kWh 1189 kWh £740 £119 £859 £10,011 11.7 yrs £7,166
5 kW 4954 kWh 3468 kWh 1486 kWh £925 £149 £1,074 £11,639 10.8 yrs £9,833
6 kW 5945 kWh 4162 kWh 1784 kWh £1,110 £178 £1,288 £13,267 10.3 yrs £12,499
7 kW 6936 kWh 4855 kWh 2081 kWh £1,295 £208 £1,503 £14,894 9.9 yrs £15,166
8 kW 7927 kWh 5549 kWh 2378 kWh £1,480 £238 £1,718 £16,522 9.6 yrs £17,832

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: £1,098, Upfront: £13,389, Break-even: 12.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1982 kWh 1447 kWh 535 kWh £386 £54 £439 £8,506 19.4 yrs £281
3 kW 2973 kWh 2170 kWh 803 kWh £579 £80 £659 £10,133 15.4 yrs £3,047
4 kW 3964 kWh 2893 kWh 1070 kWh £772 £107 £879 £11,761 13.4 yrs £5,812
5 kW 4954 kWh 3617 kWh 1338 kWh £965 £134 £1,098 £13,389 12.2 yrs £8,578
6 kW 5945 kWh 4340 kWh 1605 kWh £1,157 £161 £1,318 £15,017 11.4 yrs £11,344
7 kW 6936 kWh 5063 kWh 1873 kWh £1,350 £187 £1,538 £16,644 10.8 yrs £14,109
8 kW 7927 kWh 5787 kWh 2140 kWh £1,543 £214 £1,757 £18,272 10.4 yrs £16,875

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: £1,115, Upfront: £15,139, Break-even: 13.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1982 kWh 1486 kWh 495 kWh £396 £50 £446 £10,256 23.0 yrs £-1,337
3 kW 2973 kWh 2229 kWh 743 kWh £595 £74 £669 £11,883 17.8 yrs £1,495
4 kW 3964 kWh 2973 kWh 991 kWh £793 £99 £892 £13,511 15.1 yrs £4,327
5 kW 4954 kWh 3716 kWh 1239 kWh £991 £124 £1,115 £15,139 13.6 yrs £7,158
6 kW 5945 kWh 4459 kWh 1486 kWh £1,189 £149 £1,338 £16,767 12.5 yrs £9,990
7 kW 6936 kWh 5202 kWh 1734 kWh £1,387 £173 £1,561 £18,394 11.8 yrs £12,822
8 kW 7927 kWh 5945 kWh 1982 kWh £1,586 £198 £1,784 £20,022 11.2 yrs £15,654

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: £1,131, Upfront: £17,589, Break-even: 15.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1982 kWh 1526 kWh 456 kWh £407 £46 £453 £12,706 28.1 yrs £-3,654
3 kW 2973 kWh 2289 kWh 684 kWh £610 £68 £679 £14,333 21.1 yrs £-757
4 kW 3964 kWh 3052 kWh 912 kWh £814 £91 £905 £15,961 17.6 yrs £2,141
5 kW 4954 kWh 3815 kWh 1140 kWh £1,017 £114 £1,131 £17,589 15.5 yrs £5,039
6 kW 5945 kWh 4578 kWh 1367 kWh £1,221 £137 £1,358 £19,217 14.2 yrs £7,937
7 kW 6936 kWh 5341 kWh 1595 kWh £1,424 £160 £1,584 £20,844 13.2 yrs £10,834
8 kW 7927 kWh 6104 kWh 1823 kWh £1,628 £182 £1,810 £22,472 12.4 yrs £13,732

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 Reigate and Banstead

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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Understand DNO, G98 and G99 export limits

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Insights for SM7

Figures below are tailored to SM7 — click through for full league tables.

Big-Roof Britain Rank #483 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #961 of 2996
9.9 years (UK avg 10.8 years)
~£991 /yr • £9,767 upfront
Standing-Charge Drag Rank #601 of 2996
20.1% (UK avg 26.6%) drag on savings
£199 fixed • ~£991 /yr value
Aspect Penalty View ranking →
East −20.8% West −19.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in SM7

Monthly generation per kilowatt of solar panels

kWh 38 Jan 50 Feb 84 Mar 112 Apr 119 May 121 Jun 122 Jul 109 Aug 92 Sep 66 Oct 45 Nov 34 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.0% 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 40 kWh per month; the average month produces around 83 kWh. So a typical 4 kW home system would generate roughly 162 kWh in winter, or 330 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.67p/kWh
Daily Fixed Charge
54.45p/day
Local Sunshine
991kWh/kW
A 1 kW system generates ~991 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

Houses: 59% • Flats: 29% • Bungalows: 7% Based on 4,254 properties

Coverage

Reigate and Banstead (96%)|Sutton (4%)

Areas Covered

Banstead Village, Nork, Chipstead, Kingswood & Woodmansterne, Cheam, Carshalton South & Clockhouse

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

SM2 (Sutton)
≈3.6 km away
Local sunshine: ~995 kWh/kWp · +0% vs SM7
KT17 (Epsom and Ewell)
≈3.9 km away
Local sunshine: ~990 kWh/kWp · -0% vs SM7
KT20 (Reigate and Banstead)
≈4.0 km away
Local sunshine: ~998 kWh/kWp · +1% vs SM7
CR5 (Croydon)
≈4.4 km away
Local sunshine: ~983 kWh/kWp · -1% vs SM7
KT18 (Epsom and Ewell)
≈4.4 km away
Local sunshine: ~990 kWh/kWp · -0% vs SM7
SM1 (Sutton)
≈4.6 km away
Local sunshine: ~995 kWh/kWp · +0% vs SM7

Similar sunshine across the UK

SW1E (Westminster)
~991 kWh/kWp · +0% vs SM7
TA23 (Somerset)
~991 kWh/kWp · +0% vs SM7
RG13 (West Berkshire)
~991 kWh/kWp · +0% vs SM7