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Solar panel cost in New Forest (BH25)

See realistic solar installation costs, savings and payback for BH25 (New Forest) 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
8.9 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£1,100
What you save every year
Profit Over 25 Years
£17,725
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 1106 kWh/kW — 105 above the regional median (1001).

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 1106 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)
1106 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: £916, Upfront: £8,139, Break-even: 8.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2212 kWh 885 kWh 1327 kWh £234 £133 £367 £3,256 8.9 yrs £4,076
3 kW 3319 kWh 1327 kWh 1991 kWh £351 £199 £550 £4,883 8.9 yrs £6,113
4 kW 4425 kWh 1770 kWh 2655 kWh £468 £265 £733 £6,511 8.9 yrs £8,151
5 kW 5531 kWh 2212 kWh 3319 kWh £585 £332 £916 £8,139 8.9 yrs £10,189
6 kW 6637 kWh 2655 kWh 3982 kWh £701 £398 £1,100 £9,767 8.9 yrs £12,227
7 kW 7744 kWh 3097 kWh 4646 kWh £818 £465 £1,283 £11,394 8.9 yrs £14,265
8 kW 8850 kWh 3540 kWh 5310 kWh £935 £531 £1,466 £13,022 8.9 yrs £16,302

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: £1,098, Upfront: £10,239, Break-even: 9.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2212 kWh 1327 kWh 885 kWh £351 £88 £439 £5,356 12.2 yrs £3,429
3 kW 3319 kWh 1991 kWh 1327 kWh £526 £133 £659 £6,983 10.6 yrs £6,193
4 kW 4425 kWh 2655 kWh 1770 kWh £701 £177 £878 £8,611 9.8 yrs £8,958
5 kW 5531 kWh 3319 kWh 2212 kWh £877 £221 £1,098 £10,239 9.3 yrs £11,722
6 kW 6637 kWh 3982 kWh 2655 kWh £1,052 £265 £1,318 £11,867 9.0 yrs £14,486
7 kW 7744 kWh 4646 kWh 3097 kWh £1,228 £310 £1,537 £13,494 8.8 yrs £17,251
8 kW 8850 kWh 5310 kWh 3540 kWh £1,403 £354 £1,757 £15,122 8.6 yrs £20,015

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: £1,189, Upfront: £11,639, Break-even: 9.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2212 kWh 1549 kWh 664 kWh £409 £66 £476 £6,756 14.2 yrs £2,755
3 kW 3319 kWh 2323 kWh 996 kWh £614 £100 £713 £8,383 11.8 yrs £5,883
4 kW 4425 kWh 3097 kWh 1327 kWh £818 £133 £951 £10,011 10.5 yrs £9,011
5 kW 5531 kWh 3872 kWh 1659 kWh £1,023 £166 £1,189 £11,639 9.8 yrs £12,138
6 kW 6637 kWh 4646 kWh 1991 kWh £1,228 £199 £1,427 £13,267 9.3 yrs £15,266
7 kW 7744 kWh 5420 kWh 2323 kWh £1,432 £232 £1,664 £14,894 8.9 yrs £18,394
8 kW 8850 kWh 6195 kWh 2655 kWh £1,637 £265 £1,902 £16,522 8.7 yrs £21,521

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: £1,216, Upfront: £13,389, 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 2212 kWh 1615 kWh 597 kWh £427 £60 £486 £8,506 17.5 yrs £1,223
3 kW 3319 kWh 2423 kWh 896 kWh £640 £90 £730 £10,133 13.9 yrs £4,460
4 kW 4425 kWh 3230 kWh 1195 kWh £853 £119 £973 £11,761 12.1 yrs £7,697
5 kW 5531 kWh 4038 kWh 1493 kWh £1,067 £149 £1,216 £13,389 11.0 yrs £10,933
6 kW 6637 kWh 4845 kWh 1792 kWh £1,280 £179 £1,459 £15,017 10.3 yrs £14,170
7 kW 7744 kWh 5653 kWh 2091 kWh £1,493 £209 £1,703 £16,644 9.8 yrs £17,407
8 kW 8850 kWh 6460 kWh 2389 kWh £1,707 £239 £1,946 £18,272 9.4 yrs £20,643

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: £1,234, Upfront: £15,139, 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 2212 kWh 1659 kWh 553 kWh £438 £55 £494 £10,256 20.8 yrs £-381
3 kW 3319 kWh 2489 kWh 830 kWh £658 £83 £741 £11,883 16.0 yrs £2,928
4 kW 4425 kWh 3319 kWh 1106 kWh £877 £111 £987 £13,511 13.7 yrs £6,237
5 kW 5531 kWh 4148 kWh 1383 kWh £1,096 £138 £1,234 £15,139 12.3 yrs £9,546
6 kW 6637 kWh 4978 kWh 1659 kWh £1,315 £166 £1,481 £16,767 11.3 yrs £12,856
7 kW 7744 kWh 5808 kWh 1936 kWh £1,534 £194 £1,728 £18,394 10.6 yrs £16,165
8 kW 8850 kWh 6637 kWh 2212 kWh £1,754 £221 £1,975 £20,022 10.1 yrs £19,474

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: £1,252, Upfront: £17,589, Break-even: 14.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2212 kWh 1704 kWh 509 kWh £450 £51 £501 £12,706 25.4 yrs £-2,686
3 kW 3319 kWh 2555 kWh 763 kWh £675 £76 £751 £14,333 19.1 yrs £696
4 kW 4425 kWh 3407 kWh 1018 kWh £900 £102 £1,002 £15,961 15.9 yrs £4,078
5 kW 5531 kWh 4259 kWh 1272 kWh £1,125 £127 £1,252 £17,589 14.0 yrs £7,460
6 kW 6637 kWh 5111 kWh 1527 kWh £1,350 £153 £1,503 £19,217 12.8 yrs £10,842
7 kW 7744 kWh 5963 kWh 1781 kWh £1,575 £178 £1,753 £20,844 11.9 yrs £14,224
8 kW 8850 kWh 6814 kWh 2035 kWh £1,800 £204 £2,004 £22,472 11.2 yrs £17,606

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 New Forest

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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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for BH25

Figures below are tailored to BH25 — click through for full league tables.

Big-Roof Britain Rank #409 of 2182
5.7 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #61 of 2996
8.9 years (UK avg 10.8 years)
~£1,099 /yr • £9,767 upfront
Standing-Charge Drag Rank #22 of 2996
16.5% (UK avg 26.6%) drag on savings
£181 fixed • ~£1,099 /yr value
Aspect Penalty View ranking →
East −21.1% West −21.7%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BH25

Monthly generation per kilowatt of solar panels

kWh 42 Jan 58 Feb 95 Mar 125 Apr 134 May 135 Jun 136 Jul 120 Aug 102 Sep 72 Oct 50 Nov 36 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.3% 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 92 kWh. So a typical 4 kW home system would generate roughly 182 kWh in winter, or 369 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
49.70p/day
Local Sunshine
1106kWh/kW
A 1 kW system generates ~1106 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: 43% • Flats: 27% • Bungalows: 25% Based on 7,699 properties

Coverage

New Forest (100%)

Areas Covered

Milton, Barton & Becton, Ashley, Bashley & Fernhill, Ballard, Brockenhurst & Denny Lodge

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

SO41 (New Forest)
≈7.6 km away
Local sunshine: ~1,106 kWh/kWp · -0% vs BH25
BH23 (Bournemouth, Christchurch and Poole)
≈7.9 km away
Local sunshine: ~1,089 kWh/kWp · -2% vs BH25
SO42 (New Forest)
≈9.5 km away
Local sunshine: ~1,068 kWh/kWp · -3% vs BH25
BH6 (Bournemouth, Christchurch and Poole)
≈11.0 km away
Local sunshine: ~1,089 kWh/kWp · -2% vs BH25
PO39 (Isle of Wight)
≈11.3 km away
Local sunshine: ~1,113 kWh/kWp · +1% vs BH25
PO40 (Isle of Wight)
≈12.0 km away
Local sunshine: ~1,113 kWh/kWp · +1% vs BH25

Similar sunshine across the UK

CT3 (Dover)
~1,106 kWh/kWp · -0% vs BH25
TN31 (Rother)
~1,104 kWh/kWp · -0% vs BH25
TN36 (Rother)
~1,103 kWh/kWp · -0% vs BH25