East Lothian
Solar panels in Tranent, with the numbers shown.
A 12-panel roof in Tranent makes about 5,730 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Tranent's solar year
Tranent's best month is May, at 123.5 kWh per kWp; December manages 21.2. Over the year that comes to 901 kWh per kWp, 3% above our East Lothian county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 26.8 |
| February | 45.7 |
| March | 76.4 |
| April | 107 |
| May | 124 |
| June | 110 |
| July | 113 |
| August | 102 |
| September | 82.4 |
| October | 55.8 |
| November | 37.8 |
| December | 21.2 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Our GB average is 925 kWh per kWp a year, the mean of the 85 county PVGIS estimates we publish; at 901, Tranent is 3% below it.
How Tranent compares
Small towns rarely get published solar figures, so here are the numbers for Tranent. It is one of 5 East Lothian towns we track, and it ranks 5th of 5 for solar yield, a town of 12,125 people in the House of Commons Library settlement data. PVGIS gives its roofs 901 kWh per kWp a year, 2.47 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £822 of year one benefit, £247 of it from your own generation and £575 from export at 12p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Tranent's 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.
East Lothian is the planning authority covering Tranent, which the House of Commons Library classes as a small 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.
Modelled for Tranent at 55.94462, -2.95403 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Who runs the grid in Tranent
On NESO's licence-area map, Tranent is in South and Central Scotland, which SP Energy Networks operates. That makes SP Energy Networks the network operator for any system fitted here.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to SP Energy Networks within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
A bigger inverter or battery output needs a G99 application in advance. 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 Tranent
A heat pump in Tranent
A heat pump does most of its work from November to February. Over those four months, 12 panels in Tranent make about 840 kWh, against 2,850 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
Scottish homes apply through Home Energy Scotland rather than the Boiler Upgrade Scheme: up to £7,500 in grant for a heat pump, up to £7,500 more as an optional interest-free loan, and a £1,500 uplift for rural and island homes (checked 28 September 2026).
Charging an EV in Tranent
From April to September, 71% of a Tranent roof's yearly output arrives, peaking at about 790 kWh in May on 12 panels. A car parked at home in daylight can soak up what the house, at around 70 kWh of daytime use that month, cannot.
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).
Installed prices, the same in every town
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Tranent
Faults, servicing and ageing inverters follow the same economics in Tranent as anywhere else, and the guides below price them plainly.
Tranent solar questions
What does a solar panel system produce in Tranent?
Each kWp of panels in Tranent makes 901 kWh a year on PVGIS figures, so a typical 12-panel system produces around 5,730 kWh, from about 130 kWh in December up to 790 kWh in May.
How much are solar panels in Tranent?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Tranent before a battery. What Tranent changes is the return, about 5,730 kWh a year from that system, and your design call prices your actual roof.
Would a system in Tranent need approval from the network operator?
Tranent is on SP Energy Networks' network (South and Central Scotland licence area). Systems up to 3.68kW per phase of inverter output follow G98: SP Energy Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Tranent?
With typical use and no battery, a 12-panel system in Tranent exports about 4,794 kWh a year. At 12p per kWh that is roughly £575; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Is solar worth it in Tranent in winter?
It works, but the year is lopsided. 71% of a Tranent roof's output lands between April and September; the four months from November to February give about 840 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Tranent 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 Tranent |
|---|---|---|
| Tranent | 901 | this town |
| Prestonpans | 924 | +23 kWh |
| Musselburgh | 900 | −1 kWh |
| Dalkeith | 897 | −4 kWh |
| Haddington | 925 | +24 kWh |
| Bonnyrigg | 896 | −5 kWh |
| Gorebridge and Mayfield | 881 | −20 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 Tranent: Solar panels in Tranent from OVO Solar & Battery
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Further reading for Tranent
Sourced, dated and written by us. The same ground we cover on your free call.
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Read the guide →Get my free quote
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