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Solar panel cost in Dumfries and Galloway (DG10)

See realistic solar installation costs, savings and payback for DG10 (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
12.5 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£778
What you save every year
Profit Over 25 Years
£9,694
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 794 kWh/kW — 56 below 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 794 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)
794 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: £649, Upfront: £8,139, 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 1588 kWh 635 kWh 953 kWh £164 £95 £259 £3,256 12.5 yrs £1,934
3 kW 2382 kWh 953 kWh 1429 kWh £246 £143 £389 £4,883 12.5 yrs £2,901
4 kW 3176 kWh 1270 kWh 1906 kWh £328 £191 £519 £6,511 12.5 yrs £3,868
5 kW 3970 kWh 1588 kWh 2382 kWh £410 £238 £649 £8,139 12.5 yrs £4,835
6 kW 4764 kWh 1906 kWh 2858 kWh £493 £286 £778 £9,767 12.5 yrs £5,802
7 kW 5558 kWh 2223 kWh 3335 kWh £575 £333 £908 £11,394 12.5 yrs £6,769
8 kW 6352 kWh 2541 kWh 3811 kWh £657 £381 £1,038 £13,022 12.5 yrs £7,736

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: £775, Upfront: £10,239, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1588 kWh 953 kWh 635 kWh £246 £64 £310 £5,356 17.3 yrs £841
3 kW 2382 kWh 1429 kWh 953 kWh £369 £95 £465 £6,983 15.0 yrs £2,311
4 kW 3176 kWh 1906 kWh 1270 kWh £493 £127 £620 £8,611 13.9 yrs £3,782
5 kW 3970 kWh 2382 kWh 1588 kWh £616 £159 £775 £10,239 13.2 yrs £5,252
6 kW 4764 kWh 2858 kWh 1906 kWh £739 £191 £929 £11,867 12.8 yrs £6,722
7 kW 5558 kWh 3335 kWh 2223 kWh £862 £222 £1,084 £13,494 12.4 yrs £8,193
8 kW 6352 kWh 3811 kWh 2541 kWh £985 £254 £1,239 £15,122 12.2 yrs £9,663

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: £837, Upfront: £11,639, Break-even: 13.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1588 kWh 1112 kWh 476 kWh £287 £48 £335 £6,756 20.2 yrs £-56
3 kW 2382 kWh 1667 kWh 715 kWh £431 £71 £502 £8,383 16.7 yrs £1,666
4 kW 3176 kWh 2223 kWh 953 kWh £575 £95 £670 £10,011 14.9 yrs £3,388
5 kW 3970 kWh 2779 kWh 1191 kWh £718 £119 £837 £11,639 13.9 yrs £5,110
6 kW 4764 kWh 3335 kWh 1429 kWh £862 £143 £1,005 £13,267 13.2 yrs £6,833
7 kW 5558 kWh 3891 kWh 1667 kWh £1,006 £167 £1,172 £14,894 12.7 yrs £8,555
8 kW 6352 kWh 4446 kWh 1906 kWh £1,149 £191 £1,340 £16,522 12.3 yrs £10,277

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: £856, Upfront: £13,389, Break-even: 15.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1588 kWh 1159 kWh 429 kWh £300 £43 £343 £8,506 24.8 yrs £-1,655
3 kW 2382 kWh 1739 kWh 643 kWh £449 £64 £514 £10,133 19.7 yrs £143
4 kW 3176 kWh 2318 kWh 858 kWh £599 £86 £685 £11,761 17.2 yrs £1,940
5 kW 3970 kWh 2898 kWh 1072 kWh £749 £107 £856 £13,389 15.6 yrs £3,738
6 kW 4764 kWh 3478 kWh 1286 kWh £899 £129 £1,028 £15,017 14.6 yrs £5,536
7 kW 5558 kWh 4057 kWh 1501 kWh £1,049 £150 £1,199 £16,644 13.9 yrs £7,333
8 kW 6352 kWh 4637 kWh 1715 kWh £1,199 £172 £1,370 £18,272 13.3 yrs £9,131

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: £869, Upfront: £15,139, Break-even: 17.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1588 kWh 1191 kWh 397 kWh £308 £40 £348 £10,256 29.5 yrs £-3,304
3 kW 2382 kWh 1786 kWh 595 kWh £462 £60 £521 £11,883 22.8 yrs £-1,456
4 kW 3176 kWh 2382 kWh 794 kWh £616 £79 £695 £13,511 19.4 yrs £392
5 kW 3970 kWh 2977 kWh 992 kWh £770 £99 £869 £15,139 17.4 yrs £2,240
6 kW 4764 kWh 3573 kWh 1191 kWh £924 £119 £1,043 £16,767 16.1 yrs £4,088
7 kW 5558 kWh 4168 kWh 1389 kWh £1,078 £139 £1,216 £18,394 15.1 yrs £5,936
8 kW 6352 kWh 4764 kWh 1588 kWh £1,231 £159 £1,390 £20,022 14.4 yrs £7,783

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: £882, Upfront: £17,589, Break-even: 20.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1588 kWh 1223 kWh 365 kWh £316 £37 £353 £12,706 36.0 yrs £-5,653
3 kW 2382 kWh 1834 kWh 548 kWh £474 £55 £529 £14,333 27.1 yrs £-3,755
4 kW 3176 kWh 2445 kWh 730 kWh £632 £73 £705 £15,961 22.6 yrs £-1,857
5 kW 3970 kWh 3057 kWh 913 kWh £790 £91 £882 £17,589 20.0 yrs £41
6 kW 4764 kWh 3668 kWh 1096 kWh £948 £110 £1,058 £19,217 18.2 yrs £1,940
7 kW 5558 kWh 4280 kWh 1278 kWh £1,106 £128 £1,234 £20,844 16.9 yrs £3,838
8 kW 6352 kWh 4891 kWh 1461 kWh £1,264 £146 £1,410 £22,472 15.9 yrs £5,736

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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Insights for DG10

Figures below are tailored to DG10 — click through for full league tables.

Solar Payback Index Rank #2733 of 2996
12.6 years (UK avg 10.8 years)
~£778 /yr • £9,767 upfront
Standing-Charge Drag Rank #2147 of 2996
30.1% (UK avg 26.6%) drag on savings
£234 fixed • ~£778 /yr value
Aspect Penalty View ranking →
East −19.1% West −18.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in DG10

Monthly generation per kilowatt of solar panels

kWh 22 Jan 38 Feb 67 Mar 100 Apr 109 May 104 Jun 103 Jul 89 Aug 70 Sep 46 Oct 30 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 38.7% 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 26 kWh per month; the average month produces around 66 kWh. So a typical 4 kW home system would generate roughly 102 kWh in winter, or 265 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
794kWh/kW
A 1 kW system generates ~794 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

Annandale North, Clydesdale East

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

DG3 (Dumfries and Galloway)
≈23.1 km away
Local sunshine: ~829 kWh/kWp · +4% vs DG10
DG11 (Dumfries and Galloway)
≈24.2 km away
Local sunshine: ~875 kWh/kWp · +10% vs DG10
DG1 (Dumfries and Galloway)
≈30.7 km away
Local sunshine: ~881 kWh/kWp · +11% vs DG10
DG4 (Dumfries and Galloway)
≈31.4 km away
Local sunshine: ~829 kWh/kWp · +4% vs DG10
DG2 (Dumfries and Galloway)
≈31.6 km away
Local sunshine: ~881 kWh/kWp · +11% vs DG10
ML12 (South Lanarkshire)
≈32.4 km away
Local sunshine: ~811 kWh/kWp · +2% vs DG10

Similar sunshine across the UK

IV5 (Highland)
~793 kWh/kWp · -0% vs DG10
PH42 (Highland)
~793 kWh/kWp · -0% vs DG10
LL47 (Gwynedd)
~795 kWh/kWp · +0% vs DG10