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Solar panel cost in Gosport (PO13)

See realistic solar installation costs, savings and payback for PO13 (Gosport) 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
9.1 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£899
What you save every year
Profit Over 25 Years
£14,341
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 1085 kWh/kW — 84 above 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 1085 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)
1085 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: £899, Upfront: £8,139, Break-even: 9.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2171 kWh 868 kWh 1303 kWh £229 £130 £360 £3,256 9.1 yrs £3,938
3 kW 3256 kWh 1303 kWh 1954 kWh £344 £195 £540 £4,883 9.1 yrs £5,907
4 kW 4342 kWh 1737 kWh 2605 kWh £459 £261 £719 £6,511 9.1 yrs £7,876
5 kW 5427 kWh 2171 kWh 3256 kWh £574 £326 £899 £8,139 9.1 yrs £9,845
6 kW 6513 kWh 2605 kWh 3908 kWh £688 £391 £1,079 £9,767 9.1 yrs £11,814
7 kW 7598 kWh 3039 kWh 4559 kWh £803 £456 £1,259 £11,394 9.1 yrs £13,783
8 kW 8684 kWh 3473 kWh 5210 kWh £918 £521 £1,439 £13,022 9.1 yrs £15,752

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: £1,077, Upfront: £10,239, Break-even: 9.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2171 kWh 1303 kWh 868 kWh £344 £87 £431 £5,356 12.4 yrs £3,264
3 kW 3256 kWh 1954 kWh 1303 kWh £516 £130 £646 £6,983 10.8 yrs £5,946
4 kW 4342 kWh 2605 kWh 1737 kWh £688 £174 £862 £8,611 10.0 yrs £8,628
5 kW 5427 kWh 3256 kWh 2171 kWh £860 £217 £1,077 £10,239 9.5 yrs £11,310
6 kW 6513 kWh 3908 kWh 2605 kWh £1,032 £261 £1,293 £11,867 9.2 yrs £13,992
7 kW 7598 kWh 4559 kWh 3039 kWh £1,204 £304 £1,508 £13,494 8.9 yrs £16,674
8 kW 8684 kWh 5210 kWh 3473 kWh £1,377 £347 £1,724 £15,122 8.8 yrs £19,356

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: £1,167, Upfront: £11,639, 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 2171 kWh 1520 kWh 651 kWh £401 £65 £467 £6,756 14.5 yrs £2,577
3 kW 3256 kWh 2279 kWh 977 kWh £602 £98 £700 £8,383 12.0 yrs £5,615
4 kW 4342 kWh 3039 kWh 1303 kWh £803 £130 £933 £10,011 10.7 yrs £8,654
5 kW 5427 kWh 3799 kWh 1628 kWh £1,004 £163 £1,167 £11,639 10.0 yrs £11,692
6 kW 6513 kWh 4559 kWh 1954 kWh £1,204 £195 £1,400 £13,267 9.5 yrs £14,730
7 kW 7598 kWh 5319 kWh 2279 kWh £1,405 £228 £1,633 £14,894 9.1 yrs £17,769
8 kW 8684 kWh 6079 kWh 2605 kWh £1,606 £261 £1,866 £16,522 8.9 yrs £20,807

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: £1,193, Upfront: £13,389, Break-even: 11.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2171 kWh 1585 kWh 586 kWh £419 £59 £477 £8,506 17.8 yrs £1,041
3 kW 3256 kWh 2377 kWh 879 kWh £628 £88 £716 £10,133 14.2 yrs £4,186
4 kW 4342 kWh 3170 kWh 1172 kWh £837 £117 £955 £11,761 12.3 yrs £7,331
5 kW 5427 kWh 3962 kWh 1465 kWh £1,047 £147 £1,193 £13,389 11.2 yrs £10,477
6 kW 6513 kWh 4754 kWh 1758 kWh £1,256 £176 £1,432 £15,017 10.5 yrs £13,622
7 kW 7598 kWh 5547 kWh 2052 kWh £1,465 £205 £1,671 £16,644 10.0 yrs £16,767
8 kW 8684 kWh 6339 kWh 2345 kWh £1,675 £234 £1,909 £18,272 9.6 yrs £19,913

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: £1,211, Upfront: £15,139, Break-even: 12.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2171 kWh 1628 kWh 543 kWh £430 £54 £484 £10,256 21.2 yrs £-567
3 kW 3256 kWh 2442 kWh 814 kWh £645 £81 £727 £11,883 16.4 yrs £2,650
4 kW 4342 kWh 3256 kWh 1085 kWh £860 £109 £969 £13,511 13.9 yrs £5,867
5 kW 5427 kWh 4070 kWh 1357 kWh £1,075 £136 £1,211 £15,139 12.5 yrs £9,083
6 kW 6513 kWh 4885 kWh 1628 kWh £1,291 £163 £1,453 £16,767 11.5 yrs £12,300
7 kW 7598 kWh 5699 kWh 1900 kWh £1,506 £190 £1,696 £18,394 10.8 yrs £15,517
8 kW 8684 kWh 6513 kWh 2171 kWh £1,721 £217 £1,938 £20,022 10.3 yrs £18,733

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: £1,229, Upfront: £17,589, Break-even: 14.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2171 kWh 1672 kWh 499 kWh £442 £50 £492 £12,706 25.8 yrs £-2,874
3 kW 3256 kWh 2507 kWh 749 kWh £662 £75 £737 £14,333 19.4 yrs £414
4 kW 4342 kWh 3343 kWh 999 kWh £883 £100 £983 £15,961 16.2 yrs £3,702
5 kW 5427 kWh 4179 kWh 1248 kWh £1,104 £125 £1,229 £17,589 14.3 yrs £6,990
6 kW 6513 kWh 5015 kWh 1498 kWh £1,325 £150 £1,475 £19,217 13.0 yrs £10,278
7 kW 7598 kWh 5851 kWh 1748 kWh £1,546 £175 £1,720 £20,844 12.1 yrs £13,566
8 kW 8684 kWh 6686 kWh 1997 kWh £1,767 £200 £1,966 £22,472 11.4 yrs £16,854

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 Gosport

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 PO13

Figures below are tailored to PO13 — click through for full league tables.

Big-Roof Britain Rank #1340 of 2182
4.8 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #142 of 2996
9.1 years (UK avg 10.8 years)
~£899 /yr • £8,139 upfront
Standing-Charge Drag Rank #598 of 2996
20.1% (UK avg 26.6%) drag on savings
£181 fixed • ~£899 /yr value
Aspect Penalty View ranking →
East −21.0% West −21.8%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PO13

Monthly generation per kilowatt of solar panels

kWh 41 Jan 57 Feb 94 Mar 123 Apr 130 May 133 Jun 133 Jul 117 Aug 100 Sep 71 Oct 50 Nov 37 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.0% 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 45 kWh per month; the average month produces around 90 kWh. So a typical 4 kW home system would generate roughly 181 kWh in winter, or 362 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
49.70p/day
Local Sunshine
1085kWh/kW
A 1 kW system generates ~1085 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: 62% • Flats: 24% • Bungalows: 7% Based on 9,443 properties

Coverage

Gosport (98%)|Fareham (2%)

Areas Covered

Grange & Alver Valley, Lee West, Bridgemary, Rowner & Holbrook, Lee East, Peel Common, Forton, Stubbington + 4 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

PO12 (Gosport)
≈2.4 km away
Local sunshine: ~1,072 kWh/kWp · -1% vs PO13
PO14 (Fareham)
≈4.6 km away
Local sunshine: ~1,078 kWh/kWp · -1% vs PO13
PO16 (Fareham)
≈4.7 km away
Local sunshine: ~1,078 kWh/kWp · -1% vs PO13
PO1 (Portsmouth)
≈6.2 km away
Local sunshine: ~1,084 kWh/kWp · -0% vs PO13
PO15 (Fareham)
≈6.5 km away
Local sunshine: ~1,078 kWh/kWp · -1% vs PO13
PO5 (Portsmouth)
≈6.6 km away
Local sunshine: ~1,084 kWh/kWp · -0% vs PO13

Similar sunshine across the UK

CT9 (Thanet)
~1,086 kWh/kWp · +0% vs PO13
PL21 (South Hams)
~1,086 kWh/kWp · +0% vs PO13
BN44 (Horsham)
~1,086 kWh/kWp · +0% vs PO13