Carmarthenshire
Solar panels in Ammanford, priced before anyone visits.
Twelve panels (6.36 kWp) here make about 6,160 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
Sunlight in Ammanford, in numbers
From 30.4 kWh per kWp in December to 122.4 in May: a roof in Ammanford makes 4 times as much in its best month as in its darkest, and 969 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 33.7 |
| February | 52.7 |
| March | 86.8 |
| April | 115 |
| May | 122 |
| June | 119 |
| July | 115 |
| August | 102 |
| September | 89.8 |
| October | 60 |
| November | 41.5 |
| December | 30.4 |
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 969, Ammanford is 5% above it.
How Ammanford compares
Small towns rarely get published solar figures, so here are the numbers for Ammanford. It is one of 3 Carmarthenshire towns we track, and it ranks 3rd of 3 for solar yield, a town of 8,501 people in the House of Commons Library settlement data. PVGIS gives its roofs 969 kWh per kWp a year, 2.65 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £874 of year one benefit, £247 of it from your own generation and £627 from export at 12p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Ammanford'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.
Any planning application in Ammanford sits with Carmarthenshire, and its official House of Commons Library settlement class is 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.
The figures use PVGIS for the centre of Ammanford (51.79237, -3.98417), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
NGED and your Ammanford connection
National Grid Electricity Distribution (NGED) owns and runs the local electricity network in Ammanford, as part of its South Wales licence area.
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.
Larger systems go through G99 instead, applied for before installation. On timing: 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.
Heat pumps and EV charging in Ammanford
A heat pump in Ammanford
In December, the darkest month here, 12 panels in Ammanford make about 190 kWh. That is when a heat pump runs hardest, so its running cost in Ammanford comes down to the tariff and the flow temperature rather than the roof.
The Boiler Upgrade Scheme, open in England and Wales, takes £7,500 off an air source or ground source heat pump, or £2,500 off an air-to-air unit. Homes on oil or LPG with no mains gas get £1,500 more until March 2027 (gov.uk, checked 28 September 2026).
Charging an EV in Ammanford
Summer is where a car earns its place. In May, 12 panels in Ammanford make about 780 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
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.
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 Ammanford
If a system in Ammanford is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Solar in Ammanford: your questions answered
How much energy would 12 solar panels make in Ammanford?
Ammanford averages 2.65 peak sun hours a day, which PVGIS turns into 969 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,160 kWh, 69% of it between April and September.
What does a typical solar system cost in Ammanford?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Ammanford, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,160 kWh a year. The final figure comes from your roof on the design call.
Who is the network operator in Ammanford, and do I need a G99 application?
The operator is National Grid Electricity Distribution (NGED). 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. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Your design call checks which route yours needs.
What happens to the solar I do not use in Ammanford?
Around £627 a year at 12p per kWh, for the roughly 5,226 kWh a 12-panel system in Ammanford exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How does solar perform in Ammanford in the winter months?
December is the weakest month in Ammanford: about 190 kWh from 12 panels, against 780 kWh in May. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Ammanford compares with its neighbours
How the towns nearest Ammanford compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Ammanford |
|---|---|---|
| Ammanford | 969 | this town |
| Clydach | 981 | +12 kWh |
| Ystalyfera | 900 | −69 kWh |
| Gorseinon | 1,040 | +71 kWh |
| Llanelli | 1,064 | +95 kWh |
| Gowerton | 1,063 | +94 kWh |
| Swansea | 1,023 | +54 kWh |
PVGIS v5.2 for each town centroid, identical assumptions throughout. A few kWh either way is weather-year noise; a spread beyond about 30 kWh per kWp is real geography.
Also for Ammanford: Solar panels in Ammanford from OVO Solar & Battery
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.
Reading for Ammanford homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels need direct sunlight? Not really, and here is why
No. Solar cells respond to light hitting them, not to a clear line of sight to the sun.
Read the guide →What a battery gateway actually does
Without a gateway your system shuts down when the grid does. Here is what the box actually does.
Read the guide →Home EV charger types and speeds, explained properly
Granny cable, 7kW wall unit or 22kW three phase. What each adds per hour, and which you need.
Read the guide →How much does a heat pump cost? The 2026 numbers, before and after the grant
UK median installed cost around £12,908, before the up to £7,500 grant comes off.
Read the guide →EV tariffs compared: the cheapest overnight windows
Overnight rates of 6.99p to 9p against a 26.32p capped average, compared.
Read the guide →How to check an MCS certificate is genuine, before the deposit leaves your account
A logo proves nothing. Certification is business specific, technology specific and checkable.
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.