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Solar panel cost in Dumfries and Galloway (DG9)

See realistic solar installation costs, savings and payback for DG9 (Dumfries and Galloway) 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
10.5 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£926
What you save every year
Profit Over 25 Years
£13,385
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 Scotland, the current unit rate is 25.85p/kWh with a 64.17p/day standing charge. Your postcode’s south-facing sunshine yield is 945 kWh/kW — 95 above the regional median (850).

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 945 kWh per year on a south-facing roof. We value self-used electricity at 25.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.9p/kWh
Standing charge
64.2p/day
Sunshine yield (south)
945 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: £772, Upfront: £8,139, Break-even: 10.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 756 kWh 1133 kWh £195 £113 £309 £3,256 10.5 yrs £2,918
3 kW 2834 kWh 1133 kWh 1700 kWh £293 £170 £463 £4,883 10.5 yrs £4,377
4 kW 3778 kWh 1511 kWh 2267 kWh £391 £227 £617 £6,511 10.5 yrs £5,837
5 kW 4723 kWh 1889 kWh 2834 kWh £488 £283 £772 £8,139 10.5 yrs £7,296
6 kW 5667 kWh 2267 kWh 3400 kWh £586 £340 £926 £9,767 10.5 yrs £8,755
7 kW 6612 kWh 2645 kWh 3967 kWh £684 £397 £1,080 £11,394 10.5 yrs £10,214
8 kW 7557 kWh 3023 kWh 4534 kWh £781 £453 £1,235 £13,022 10.5 yrs £11,673

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: £921, Upfront: £10,239, Break-even: 11.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1133 kWh 756 kWh £293 £76 £369 £5,356 14.5 yrs £2,016
3 kW 2834 kWh 1700 kWh 1133 kWh £440 £113 £553 £6,983 12.6 yrs £4,074
4 kW 3778 kWh 2267 kWh 1511 kWh £586 £151 £737 £8,611 11.7 yrs £6,132
5 kW 4723 kWh 2834 kWh 1889 kWh £733 £189 £921 £10,239 11.1 yrs £8,190
6 kW 5667 kWh 3400 kWh 2267 kWh £879 £227 £1,106 £11,867 10.7 yrs £10,248
7 kW 6612 kWh 3967 kWh 2645 kWh £1,026 £264 £1,290 £13,494 10.5 yrs £12,306
8 kW 7557 kWh 4534 kWh 3023 kWh £1,172 £302 £1,474 £15,122 10.3 yrs £14,364

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: £996, Upfront: £11,639, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1322 kWh 567 kWh £342 £57 £399 £6,756 17.0 yrs £1,215
3 kW 2834 kWh 1984 kWh 850 kWh £513 £85 £598 £8,383 14.0 yrs £3,572
4 kW 3778 kWh 2645 kWh 1133 kWh £684 £113 £797 £10,011 12.6 yrs £5,930
5 kW 4723 kWh 3306 kWh 1417 kWh £855 £142 £996 £11,639 11.7 yrs £8,287
6 kW 5667 kWh 3967 kWh 1700 kWh £1,026 £170 £1,196 £13,267 11.1 yrs £10,645
7 kW 6612 kWh 4628 kWh 1984 kWh £1,196 £198 £1,395 £14,894 10.7 yrs £13,002
8 kW 7557 kWh 5290 kWh 2267 kWh £1,367 £227 £1,594 £16,522 10.4 yrs £15,359

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: £1,019, Upfront: £13,389, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1379 kWh 510 kWh £356 £51 £408 £8,506 20.9 yrs £-355
3 kW 2834 kWh 2069 kWh 765 kWh £535 £77 £611 £10,133 16.6 yrs £2,092
4 kW 3778 kWh 2758 kWh 1020 kWh £713 £102 £815 £11,761 14.4 yrs £4,539
5 kW 4723 kWh 3448 kWh 1275 kWh £891 £128 £1,019 £13,389 13.1 yrs £6,986
6 kW 5667 kWh 4137 kWh 1530 kWh £1,069 £153 £1,223 £15,017 12.3 yrs £9,434
7 kW 6612 kWh 4827 kWh 1785 kWh £1,248 £179 £1,426 £16,644 11.7 yrs £11,881
8 kW 7557 kWh 5516 kWh 2040 kWh £1,426 £204 £1,630 £18,272 11.2 yrs £14,328

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: £1,034, Upfront: £15,139, Break-even: 14.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1417 kWh 472 kWh £366 £47 £413 £10,256 24.8 yrs £-1,986
3 kW 2834 kWh 2125 kWh 708 kWh £549 £71 £620 £11,883 19.2 yrs £521
4 kW 3778 kWh 2834 kWh 945 kWh £733 £94 £827 £13,511 16.3 yrs £3,029
5 kW 4723 kWh 3542 kWh 1181 kWh £916 £118 £1,034 £15,139 14.6 yrs £5,536
6 kW 5667 kWh 4251 kWh 1417 kWh £1,099 £142 £1,240 £16,767 13.5 yrs £8,043
7 kW 6612 kWh 4959 kWh 1653 kWh £1,282 £165 £1,447 £18,394 12.7 yrs £10,550
8 kW 7557 kWh 5667 kWh 1889 kWh £1,465 £189 £1,654 £20,022 12.1 yrs £13,057

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: £1,049, Upfront: £17,589, Break-even: 16.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1455 kWh 435 kWh £376 £43 £419 £12,706 30.3 yrs £-4,316
3 kW 2834 kWh 2182 kWh 652 kWh £564 £65 £629 £14,333 22.8 yrs £-1,749
4 kW 3778 kWh 2909 kWh 869 kWh £752 £87 £839 £15,961 19.0 yrs £818
5 kW 4723 kWh 3637 kWh 1086 kWh £940 £109 £1,049 £17,589 16.8 yrs £3,385
6 kW 5667 kWh 4364 kWh 1304 kWh £1,128 £130 £1,258 £19,217 15.3 yrs £5,952
7 kW 6612 kWh 5091 kWh 1521 kWh £1,316 £152 £1,468 £20,844 14.2 yrs £8,519
8 kW 7557 kWh 5819 kWh 1738 kWh £1,504 £174 £1,678 £22,472 13.4 yrs £11,086

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 Dumfries and Galloway

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 DG9

Figures below are tailored to DG9 — click through for full league tables.

Solar Payback Index Rank #1532 of 2996
10.5 years (UK avg 10.8 years)
~£926 /yr • £9,767 upfront
Standing-Charge Drag Rank #1469 of 2996
25.3% (UK avg 26.6%) drag on savings
£234 fixed • ~£926 /yr value
Aspect Penalty View ranking →
East −21.1% West −23.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in DG9

Monthly generation per kilowatt of solar panels

kWh 28 Jan 47 Feb 82 Mar 115 Apr 128 May 123 Jun 120 Jul 109 Aug 82 Sep 55 Oct 35 Nov 21 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 40.4% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 32 kWh per month; the average month produces around 79 kWh. So a typical 4 kW home system would generate roughly 127 kWh in winter, or 315 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
945kWh/kW
A 1 kW system generates ~945 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

No EPC data available for this outcode

Coverage

Dumfries and Galloway (100%)

Areas Covered

Stranraer and the Rhins, Mid Galloway and Wigtown West

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 Scotland

DG8 (Dumfries and Galloway)
≈34.7 km away
Local sunshine: ~952 kWh/kWp · +1% vs DG9
KA26 (South Ayrshire)
≈39.1 km away
Local sunshine: ~877 kWh/kWp · -7% vs DG9
KA19 (South Ayrshire)
≈54.9 km away
Local sunshine: ~877 kWh/kWp · -7% vs DG9
DG6 (Dumfries and Galloway)
≈62.8 km away
Local sunshine: ~950 kWh/kWp · +1% vs DG9
KA7 (South Ayrshire)
≈66.3 km away
Local sunshine: ~885 kWh/kWp · -6% vs DG9
KA6 (East Ayrshire)
≈67.5 km away
Local sunshine: ~879 kWh/kWp · -7% vs DG9

Similar sunshine across the UK

L43 (Wirral)
~945 kWh/kWp · +0% vs DG9
YO8 (North Yorkshire)
~945 kWh/kWp · -0% vs DG9
DY9 (Dudley)
~945 kWh/kWp · +0% vs DG9