Monmouthshire
Solar panels in Tredegar, with the numbers shown.
About 6,040 kWh a year from 12 panels in Tredegar, £6,360 installed, with your system designed on a free 30-minute video call.
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Tredegar's solar year
PVGIS puts Tredegar at 950 kWh per kWp a year, 5% below our Monmouthshire county estimate. 69% of it arrives between April and September, peaking in May.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 33 |
| February | 48.4 |
| March | 85.5 |
| April | 112 |
| May | 120 |
| June | 116 |
| July | 117 |
| August | 102 |
| September | 89.6 |
| October | 57.7 |
| November | 40 |
| December | 29 |
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 950, Tredegar is 3% above it.
How Tredegar compares
Small towns rarely get published solar figures, so here are the numbers for Tredegar. It is one of 16 Monmouthshire towns we track, and it ranks 14th of 16 for solar yield, a town of 14,460 people in the House of Commons Library settlement data. PVGIS gives its roofs 950 kWh per kWp a year, 2.60 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £860 of year one benefit, £247 of it from your own generation and £613 from export at 12p.
Every figure here assumes a clear, south-facing roof at 35 degrees. Yours will differ, which is what the free design call is for; until then, the calculator below tests panels, batteries and export rates on Tredegar's own yield.
Blaenau Gwent is the planning authority covering Tredegar, 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 Tredegar at 51.77898, -3.25025 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 Tredegar
Tredegar is served by National Grid Electricity Distribution (NGED): the town's centre falls inside its South Wales 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: NGED is notified within 28 days of commissioning and nothing has to be approved first.
A bigger inverter or battery output needs a G99 application in advance. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Tredegar
A heat pump in Tredegar
A heat pump does most of its work from November to February. Over those four months, 12 panels in Tredegar make about 960 kWh, against 2,900 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
In Wales, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Tredegar
From April to September, 69% of a Tredegar roof's yearly output arrives, peaking at about 760 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.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds a 7.4kW smart charger from £1,100 installed.
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Tredegar
Faults, servicing and ageing inverters follow the same economics in Tredegar as anywhere else, and the guides below price them plainly.
Solar in Tredegar: your questions answered
What does a solar panel system produce in Tredegar?
Each kWp of panels in Tredegar makes 950 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,040 kWh, from about 180 kWh in December up to 760 kWh in May.
What would 12 solar panels cost in Tredegar?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Tredegar differs is output: about 6,040 kWh a year from that system.
Would a system in Tredegar need approval from the network operator?
Tredegar is on National Grid Electricity Distribution's network (South Wales licence area). Systems up to 3.68kW per phase of inverter output follow G98: NGED is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Our G98 vs G99 guide explains both routes.
How much would export pay on a system in Tredegar?
It is exported. With typical use and no battery, about 5,105 kWh of the 6,040 kWh a 12-panel system makes in Tredegar goes to the grid, around £613 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Is solar worth it in Tredegar in winter?
It works, but the year is lopsided. 69% of a Tredegar roof's output lands between April and September; the four months from November to February give about 960 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Tredegar 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 Tredegar |
|---|---|---|
| Tredegar | 950 | this town |
| Ebbw Vale | 945 | −5 kWh |
| Merthyr Tydfil | 942 | −8 kWh |
| Abertillery | 947 | −3 kWh |
| Bargod | 985 | +35 kWh |
| Blackwood | 987 | +37 kWh |
| Abersychan | 958 | +8 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Tredegar: Solar panels in Tredegar from OVO Solar & Battery
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Further reading for Tredegar
Sourced, dated and written by us. The same ground we cover on your free call.
How to clean solar panels, and whether you need to at all
Cleaning is oversold and pigeon mesh is undersold. The numbers behind both.
Read the guide →Tesla Powerwall 3 against the alternatives, and where each one wins
The strongest single box in the market, and the houses it is still wrong for.
Read the guide →What an EV charger installation actually involves
Main fuse, DNO notification, load balancing and the paperwork. What really happens.
Read the guide →Are air source heat pumps any good? What owners actually report
The UK's largest survey found 80% of heat pump owners satisfied, against 70% for gas boilers.
Read the guide →Will energy prices keep rising, and by how much
The January forecasts jumped fast. What is confirmed, what is guessed, and whether solar is a real hedge.
Read the guide →G98 or G99: which one applies, what the application involves, and how long it takes
The G98 line sits at 3.68kW per phase. Above it, your network operator has to say yes first.
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.