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Solar panel cost in West Oxfordshire (OX8)

See realistic solar installation costs, savings and payback for OX8 (West Oxfordshire) 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
£8,139
What you pay to get started
Annual Benefit
£819
What you save every year
Profit Over 25 Years
£12,327
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 Southern, the current unit rate is 26.42p/kWh with a 49.70p/day standing charge. Your postcode’s south-facing sunshine yield is 988 kWh/kW — 13 below the regional median (1001).

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 988 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
49.7p/day
Sunshine yield (south)
988 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: £819, 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 1976 kWh 791 kWh 1186 kWh £209 £119 £327 £3,256 9.9 yrs £3,293
3 kW 2965 kWh 1186 kWh 1779 kWh £313 £178 £491 £4,883 9.9 yrs £4,940
4 kW 3953 kWh 1581 kWh 2372 kWh £418 £237 £655 £6,511 9.9 yrs £6,587
5 kW 4941 kWh 1976 kWh 2965 kWh £522 £296 £819 £8,139 9.9 yrs £8,234
6 kW 5929 kWh 2372 kWh 3557 kWh £627 £356 £982 £9,767 9.9 yrs £9,880
7 kW 6917 kWh 2767 kWh 4150 kWh £731 £415 £1,146 £11,394 9.9 yrs £11,527
8 kW 7906 kWh 3162 kWh 4743 kWh £835 £474 £1,310 £13,022 9.9 yrs £13,174

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: £981, Upfront: £10,239, Break-even: 10.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1976 kWh 1186 kWh 791 kWh £313 £79 £392 £5,356 13.6 yrs £2,491
3 kW 2965 kWh 1779 kWh 1186 kWh £470 £119 £589 £6,983 11.9 yrs £4,787
4 kW 3953 kWh 2372 kWh 1581 kWh £627 £158 £785 £8,611 11.0 yrs £7,083
5 kW 4941 kWh 2965 kWh 1976 kWh £783 £198 £981 £10,239 10.4 yrs £9,379
6 kW 5929 kWh 3557 kWh 2372 kWh £940 £237 £1,177 £11,867 10.1 yrs £11,674
7 kW 6917 kWh 4150 kWh 2767 kWh £1,097 £277 £1,373 £13,494 9.8 yrs £13,970
8 kW 7906 kWh 4743 kWh 3162 kWh £1,253 £316 £1,569 £15,122 9.6 yrs £16,266

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: £1,062, 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 1976 kWh 1383 kWh 593 kWh £366 £59 £425 £6,756 15.9 yrs £1,741
3 kW 2965 kWh 2075 kWh 889 kWh £548 £89 £637 £8,383 13.2 yrs £4,361
4 kW 3953 kWh 2767 kWh 1186 kWh £731 £119 £850 £10,011 11.8 yrs £6,981
5 kW 4941 kWh 3459 kWh 1482 kWh £914 £148 £1,062 £11,639 11.0 yrs £9,601
6 kW 5929 kWh 4150 kWh 1779 kWh £1,097 £178 £1,274 £13,267 10.4 yrs £12,222
7 kW 6917 kWh 4842 kWh 2075 kWh £1,279 £208 £1,487 £14,894 10.0 yrs £14,842
8 kW 7906 kWh 5534 kWh 2372 kWh £1,462 £237 £1,699 £16,522 9.7 yrs £17,462

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: £1,086, Upfront: £13,389, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1976 kWh 1443 kWh 534 kWh £381 £53 £435 £8,506 19.6 yrs £185
3 kW 2965 kWh 2164 kWh 800 kWh £572 £80 £652 £10,133 15.5 yrs £2,903
4 kW 3953 kWh 2886 kWh 1067 kWh £762 £107 £869 £11,761 13.5 yrs £5,621
5 kW 4941 kWh 3607 kWh 1334 kWh £953 £133 £1,086 £13,389 12.3 yrs £8,338
6 kW 5929 kWh 4328 kWh 1601 kWh £1,144 £160 £1,304 £15,017 11.5 yrs £11,056
7 kW 6917 kWh 5050 kWh 1868 kWh £1,334 £187 £1,521 £16,644 10.9 yrs £13,773
8 kW 7906 kWh 5771 kWh 2134 kWh £1,525 £213 £1,738 £18,272 10.5 yrs £16,491

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: £1,103, Upfront: £15,139, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1976 kWh 1482 kWh 494 kWh £392 £49 £441 £10,256 23.3 yrs £-1,435
3 kW 2965 kWh 2223 kWh 741 kWh £587 £74 £662 £11,883 18.0 yrs £1,348
4 kW 3953 kWh 2965 kWh 988 kWh £783 £99 £882 £13,511 15.3 yrs £4,130
5 kW 4941 kWh 3706 kWh 1235 kWh £979 £124 £1,103 £15,139 13.7 yrs £6,913
6 kW 5929 kWh 4447 kWh 1482 kWh £1,175 £148 £1,323 £16,767 12.7 yrs £9,695
7 kW 6917 kWh 5188 kWh 1729 kWh £1,371 £173 £1,544 £18,394 11.9 yrs £12,478
8 kW 7906 kWh 5929 kWh 1976 kWh £1,566 £198 £1,764 £20,022 11.3 yrs £15,260

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: £1,119, Upfront: £17,589, Break-even: 15.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1976 kWh 1522 kWh 455 kWh £402 £45 £448 £12,706 28.4 yrs £-3,755
3 kW 2965 kWh 2283 kWh 682 kWh £603 £68 £671 £14,333 21.4 yrs £-908
4 kW 3953 kWh 3044 kWh 909 kWh £804 £91 £895 £15,961 17.8 yrs £1,940
5 kW 4941 kWh 3805 kWh 1136 kWh £1,005 £114 £1,119 £17,589 15.7 yrs £4,787
6 kW 5929 kWh 4565 kWh 1364 kWh £1,206 £136 £1,343 £19,217 14.3 yrs £7,635
7 kW 6917 kWh 5326 kWh 1591 kWh £1,407 £159 £1,566 £20,844 13.3 yrs £10,482
8 kW 7906 kWh 6087 kWh 1818 kWh £1,608 £182 £1,790 £22,472 12.6 yrs £13,329

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 West Oxfordshire

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 OX8

Figures below are tailored to OX8 — click through for full league tables.

Solar Payback Index Rank #899 of 2996
9.9 years (UK avg 10.8 years)
~£818 /yr • £8,139 upfront
Standing-Charge Drag Rank #922 of 2996
22.1% (UK avg 26.6%) drag on savings
£181 fixed • ~£818 /yr value
Aspect Penalty View ranking →
East −21.1% West −19.8%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in OX8

Monthly generation per kilowatt of solar panels

kWh 39 Jan 52 Feb 85 Mar 110 Apr 118 May 119 Jun 121 Jul 108 Aug 91 Sep 66 Oct 45 Nov 34 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.6% 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
26.42p/kWh
Daily Fixed Charge
49.70p/day
Local Sunshine
988kWh/kW
A 1 kW system generates ~988 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

No EPC data available for this outcode

Coverage

West Oxfordshire (99%)|Cotswold (1%)

Areas Covered

Eynsham and Cassington, Witney South, Hailey, Minster Lovell and Leafield, Standlake, Aston and Stanton Harcourt, Bampton and Clanfield, Ducklington + 6 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 Southern

OX28 (West Oxfordshire)
≈0.3 km away
Local sunshine: ~991 kWh/kWp · +0% vs OX8
OX29 (West Oxfordshire)
≈4.2 km away
Local sunshine: ~994 kWh/kWp · +1% vs OX8
OX18 (West Oxfordshire)
≈7.5 km away
Local sunshine: ~998 kWh/kWp · +1% vs OX8
OX20 (West Oxfordshire)
≈11.7 km away
Local sunshine: ~994 kWh/kWp · +1% vs OX8
OX7 (West Oxfordshire)
≈13.2 km away
Local sunshine: ~993 kWh/kWp · +1% vs OX8
OX5 (Cherwell)
≈14.7 km away
Local sunshine: ~992 kWh/kWp · +0% vs OX8

Similar sunshine across the UK

WD5 (Three Rivers)
~988 kWh/kWp · +0% vs OX8
TR9 (Cornwall)
~988 kWh/kWp · -0% vs OX8
N12 (Barnet)
~988 kWh/kWp · -0% vs OX8