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Solar panel cost in Dumfries and Galloway (DG13)

See realistic solar installation costs, savings and payback for DG13 (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
11.9 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£824
What you save every year
Profit Over 25 Years
£10,834
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 841 kWh/kW — 9 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 841 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)
841 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: £687, Upfront: £8,139, Break-even: 11.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1681 kWh 672 kWh 1009 kWh £174 £101 £275 £3,256 11.9 yrs £2,238
3 kW 2522 kWh 1009 kWh 1513 kWh £261 £151 £412 £4,883 11.9 yrs £3,357
4 kW 3362 kWh 1345 kWh 2017 kWh £348 £202 £549 £6,511 11.9 yrs £4,476
5 kW 4203 kWh 1681 kWh 2522 kWh £435 £252 £687 £8,139 11.9 yrs £5,595
6 kW 5043 kWh 2017 kWh 3026 kWh £521 £303 £824 £9,767 11.9 yrs £6,714
7 kW 5884 kWh 2353 kWh 3530 kWh £608 £353 £961 £11,394 11.9 yrs £7,833
8 kW 6724 kWh 2690 kWh 4034 kWh £695 £403 £1,099 £13,022 11.9 yrs £8,952

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: £820, Upfront: £10,239, 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 1681 kWh 1009 kWh 672 kWh £261 £67 £328 £5,356 16.3 yrs £1,204
3 kW 2522 kWh 1513 kWh 1009 kWh £391 £101 £492 £6,983 14.2 yrs £2,856
4 kW 3362 kWh 2017 kWh 1345 kWh £521 £134 £656 £8,611 13.1 yrs £4,508
5 kW 4203 kWh 2522 kWh 1681 kWh £652 £168 £820 £10,239 12.5 yrs £6,160
6 kW 5043 kWh 3026 kWh 2017 kWh £782 £202 £984 £11,867 12.1 yrs £7,811
7 kW 5884 kWh 3530 kWh 2353 kWh £913 £235 £1,148 £13,494 11.8 yrs £9,463
8 kW 6724 kWh 4034 kWh 2690 kWh £1,043 £269 £1,312 £15,122 11.5 yrs £11,115

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: £887, Upfront: £11,639, 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 1681 kWh 1177 kWh 504 kWh £304 £50 £355 £6,756 19.1 yrs £337
3 kW 2522 kWh 1765 kWh 756 kWh £456 £76 £532 £8,383 15.8 yrs £2,255
4 kW 3362 kWh 2353 kWh 1009 kWh £608 £101 £709 £10,011 14.1 yrs £4,173
5 kW 4203 kWh 2942 kWh 1261 kWh £760 £126 £887 £11,639 13.1 yrs £6,092
6 kW 5043 kWh 3530 kWh 1513 kWh £913 £151 £1,064 £13,267 12.5 yrs £8,010
7 kW 5884 kWh 4118 kWh 1765 kWh £1,065 £177 £1,241 £14,894 12.0 yrs £9,928
8 kW 6724 kWh 4707 kWh 2017 kWh £1,217 £202 £1,418 £16,522 11.6 yrs £11,847

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: £907, Upfront: £13,389, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1681 kWh 1227 kWh 454 kWh £317 £45 £363 £8,506 23.5 yrs £-1,253
3 kW 2522 kWh 1841 kWh 681 kWh £476 £68 £544 £10,133 18.6 yrs £745
4 kW 3362 kWh 2454 kWh 908 kWh £634 £91 £725 £11,761 16.2 yrs £2,743
5 kW 4203 kWh 3068 kWh 1135 kWh £793 £113 £907 £13,389 14.8 yrs £4,741
6 kW 5043 kWh 3681 kWh 1362 kWh £952 £136 £1,088 £15,017 13.8 yrs £6,740
7 kW 5884 kWh 4295 kWh 1589 kWh £1,110 £159 £1,269 £16,644 13.1 yrs £8,738
8 kW 6724 kWh 4909 kWh 1816 kWh £1,269 £182 £1,450 £18,272 12.6 yrs £10,736

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: £920, Upfront: £15,139, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1681 kWh 1261 kWh 420 kWh £326 £42 £368 £10,256 27.9 yrs £-2,897
3 kW 2522 kWh 1891 kWh 630 kWh £489 £63 £552 £11,883 21.5 yrs £-845
4 kW 3362 kWh 2522 kWh 841 kWh £652 £84 £736 £13,511 18.4 yrs £1,206
5 kW 4203 kWh 3152 kWh 1051 kWh £815 £105 £920 £15,139 16.5 yrs £3,258
6 kW 5043 kWh 3782 kWh 1261 kWh £978 £126 £1,104 £16,767 15.2 yrs £5,309
7 kW 5884 kWh 4413 kWh 1471 kWh £1,141 £147 £1,288 £18,394 14.3 yrs £7,361
8 kW 6724 kWh 5043 kWh 1681 kWh £1,304 £168 £1,472 £20,022 13.6 yrs £9,413

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: £933, Upfront: £17,589, Break-even: 18.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1681 kWh 1294 kWh 387 kWh £335 £39 £373 £12,706 34.0 yrs £-5,240
3 kW 2522 kWh 1942 kWh 580 kWh £502 £58 £560 £14,333 25.6 yrs £-3,135
4 kW 3362 kWh 2589 kWh 773 kWh £669 £77 £747 £15,961 21.4 yrs £-1,031
5 kW 4203 kWh 3236 kWh 967 kWh £836 £97 £933 £17,589 18.8 yrs £1,074
6 kW 5043 kWh 3883 kWh 1160 kWh £1,004 £116 £1,120 £19,217 17.2 yrs £3,179
7 kW 5884 kWh 4530 kWh 1353 kWh £1,171 £135 £1,306 £20,844 16.0 yrs £5,284
8 kW 6724 kWh 5178 kWh 1547 kWh £1,338 £155 £1,493 £22,472 15.1 yrs £7,389

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 DG13

Figures below are tailored to DG13 — click through for full league tables.

Solar Payback Index Rank #2392 of 2996
11.8 years (UK avg 10.8 years)
~£825 /yr • £9,767 upfront
Standing-Charge Drag Rank #1920 of 2996
28.4% (UK avg 26.6%) drag on savings
£234 fixed • ~£825 /yr value
Aspect Penalty View ranking →
East −19.6% West −20.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in DG13

Monthly generation per kilowatt of solar panels

kWh 24 Jan 41 Feb 71 Mar 103 Apr 114 May 109 Jun 108 Jul 94 Aug 74 Sep 50 Oct 33 Nov 18 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 39.5% 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 28 kWh per month; the average month produces around 70 kWh. So a typical 4 kW home system would generate roughly 111 kWh in winter, or 280 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
841kWh/kW
A 1 kW system generates ~841 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 East and Eskdale, Annandale North

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

DG14 (Dumfries and Galloway)
≈8.4 km away
Local sunshine: ~863 kWh/kWp · +3% vs DG13
DG16 (Dumfries and Galloway)
≈18.0 km away
Local sunshine: ~900 kWh/kWp · +7% vs DG13
DG11 (Dumfries and Galloway)
≈22.8 km away
Local sunshine: ~875 kWh/kWp · +4% vs DG13
DG12 (Dumfries and Galloway)
≈24.6 km away
Local sunshine: ~906 kWh/kWp · +8% vs DG13
TD9 (Scottish Borders)
≈33.0 km away
Local sunshine: ~843 kWh/kWp · +0% vs DG13
DG10 (Dumfries and Galloway)
≈34.5 km away
Local sunshine: ~794 kWh/kWp · -6% vs DG13

Similar sunshine across the UK

NE48 (Northumberland)
~840 kWh/kWp · -0% vs DG13
SK15 (Tameside)
~841 kWh/kWp · +0% vs DG13
PA20 (Argyll and Bute)
~841 kWh/kWp · +0% vs DG13