Dumfriesshire
Solar panels in Dumfries, designed on a free call.
Twelve panels (6.36 kWp) here make about 5,870 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Dumfries roof makes, month by month
Dumfries' best month is May, at 125.7 kWh per kWp; December manages 24.7. Over the year that comes to 923 kWh per kWp, 8% above our Dumfriesshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 27.6 |
| February | 48.2 |
| March | 77 |
| April | 109 |
| May | 126 |
| June | 118 |
| July | 117 |
| August | 102 |
| September | 80.8 |
| October | 56.1 |
| November | 36.6 |
| December | 24.7 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Dumfries makes 923 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Dumfries is level with it.
How Dumfries compares
Among the places we publish figures for, Dumfries is one of 2 Dumfriesshire towns we track, and it ranks 2nd of 2 for solar yield. It is a medium town in the House of Commons Library classification, with 33,108 residents, and its roofs see 2.53 peak sun hours a day across the year. That drives the standard 12 panel model to 5,870 kWh of generation, of which around 4,934 kWh is exported at 12p for £592 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Dumfries' own yield, and prices a 12 panel system at £6,360 installed before any battery. Your free design call reworks every number for your actual roof, its shading and your usage.
Any planning application in Dumfries sits with Dumfries and Galloway, and its official House of Commons Library settlement class is medium town.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
Price this for your roof
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
Generation is modelled from PVGIS satellite data for Dumfries' own coordinates (55.06977, -3.60927), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate; the methodology is on our help page.
The network operator for Dumfries
Dumfries is served by SP Energy Networks: the town's centre falls inside its South and Central Scotland licence area on NESO's boundary map.
What decides the paperwork is the inverter and battery output, not the number of panels. Up to 3.68kW per phase, a system follows G98: SP Energy Networks is notified within 28 days of commissioning and nothing has to be approved first.
Above that, G99 means applying before the work is booked. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds SP Energy Networks as it does every network operator.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Heat pumps and EV charging in Dumfries
A heat pump in Dumfries
In December, the darkest month here, 12 panels in Dumfries make about 160 kWh. That is when a heat pump runs hardest, so its running cost in Dumfries comes down to the tariff and the flow temperature rather than the roof.
In Scotland, Home Energy Scotland offers a grant of up to £7,500 towards a heat pump, an optional interest-free loan of up to £7,500 on top, and £1,500 more for rural and island homes (Home Energy Scotland, checked 28 September 2026).
Charging an EV in Dumfries
Dumfries' May output, about 800 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
The calculator above includes a 7.4kW smart charger from £1,100 installed. Renters and flat owners with off-street parking can claim 75% of a chargepoint's cost, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026).
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Dumfries
If a system in Dumfries is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Solar in Dumfries: your questions answered
How much energy would 12 solar panels make in Dumfries?
Dumfries averages 2.53 peak sun hours a day, which PVGIS turns into 923 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 5,870 kWh, 71% of it between April and September.
Is solar more expensive in Dumfries?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Dumfries, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 5,870 kWh a year here, which is what drives payback.
Who is the network operator in Dumfries, and do I need a G99 application?
The operator is SP Energy Networks. Most home systems use the G98 route, a notification within 28 days of switch-on for up to 3.68kW per phase, so nothing waits on the network. Above that, G99 applies and has to be granted first. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds SP Energy Networks as it does every network operator. Your design call checks which route yours needs.
What could I earn from exporting in Dumfries?
On the 12p export scenario, a 12-panel system in Dumfries sends about 4,934 kWh a year to the grid, worth around £592. The export rates table compares what each supplier pays.
How does solar perform in Dumfries in the winter months?
December is the weakest month in Dumfries: about 160 kWh from 12 panels, against 800 kWh in May. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Dumfries compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp a year | vs Dumfries |
|---|---|---|
| Dumfries | 923 | this town |
| Annan | 929 | +6 kWh |
| Maryport | 956 | +33 kWh |
| Carlisle | 915 | −8 kWh |
| Cockermouth | 868 | −55 kWh |
| Workington | 950 | +27 kWh |
| Whitehaven | 975 | +52 kWh |
Same PVGIS v5.2 query for every town. Small differences are within year-to-year weather; more than about 30 kWh per kWp apart is geography.
Also for Dumfries: Solar panels in Dumfries from OVO Solar & Battery
Also near Dumfries
See a number before you speak to anyone
Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Further reading for Dumfries
Sourced, dated and written by us. The same ground we cover on your free call.
What solar actually costs in 2026, and where every pound goes
Around £8,677 average, £1,550 to £1,800 per kW. Where every pound actually goes.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
Read the guide →What it really costs to charge an EV at home versus in public
Home off-peak charging costs a fraction of the public price. The arithmetic, and the tariff it depends on.
Read the guide →Heat pump running costs versus a gas boiler, assumptions shown
Four numbers decide it: seasonal efficiency, flow temperature, tariff and heat demand.
Read the guide →Choosing a tariff when you have solar, a battery and an EV
Solar, battery and EV want different tariffs. How to work out which one to protect.
Read the guide →NAPIT, NICEIC and competent person schemes: who tells building control about your solar
Solar work is notifiable. A competent person scheme means your installation team notifies, not you.
Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.