Glamorgan
Solar panels in Ystalyfera, sized to your roof.
About 5,720 kWh a year from 12 panels in Ystalyfera, £6,360 installed, with your system designed 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
What a roof in Ystalyfera can generate
Ystalyfera's best month is May, at 115.3 kWh per kWp; December manages 24.6. Over the year that comes to 900 kWh per kWp, 4% below our Glamorgan county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 27.4 |
| February | 46.9 |
| March | 82.4 |
| April | 109 |
| May | 115 |
| June | 113 |
| July | 109 |
| August | 95.1 |
| September | 85.3 |
| October | 55.7 |
| November | 37 |
| December | 24.6 |
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 900, Ystalyfera is 3% below it.
How Ystalyfera compares
Small towns rarely get published solar figures, so here are the numbers for Ystalyfera. It is one of 32 Glamorgan towns we track, and it ranks 31st of 32 for solar yield, a town of 7,777 people in the House of Commons Library settlement data. PVGIS gives its roofs 900 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 £821 of year one benefit, £247 of it from your own generation and £574 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 Ystalyfera's own yield.
Ystalyfera sits within Neath Port Talbot, its local planning authority, and the House of Commons Library classes it 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.
The figures use PVGIS for the centre of Ystalyfera (51.76532, -3.78435), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
Connecting solar to the Ystalyfera network
Ystalyfera sits in National Grid Electricity Distribution's South Wales licence area, so NGED is the network operator (DNO) any solar panels or battery here are registered with.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, NGED only has to be told within 28 days after the system is commissioned.
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 Ystalyfera
A heat pump in Ystalyfera
Solar and a heat pump pull in opposite directions through the year: Ystalyfera's roofs make 860 kWh from November to February on a 12-panel system, and 2,750 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
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 Ystalyfera
A 12-panel roof in Ystalyfera makes about 730 kWh in May. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
If you rent, or own a flat, and have private off-street parking, the government chargepoint grant covers 75% of the cost, capped at £500 a socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above prices a 7.4kW smart charger from £1,100 installed.
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 Ystalyfera
Guidance is nationwide, so the benchmarks hold in Ystalyfera: repair costs, service scope, and when the inverter is the real fault.
Common questions about solar in Ystalyfera
What could a roof in Ystalyfera generate?
PVGIS puts a roof in Ystalyfera at 900 kWh per kWp a year, 2.47 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 5,720 kWh a year, most of it between April and September.
What would 12 solar panels cost in Ystalyfera?
£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 Ystalyfera differs is output: about 5,720 kWh a year from that system.
Do I need permission from the DNO for solar in Ystalyfera?
Usually not in advance. NGED, the network operator for Ystalyfera, only needs a G98 notification within 28 days of commissioning for systems up to 3.68kW per phase. Bigger inverter or battery outputs need G99 approval first. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. "See our DNO explainer.
How much would export pay on a system in Ystalyfera?
It is exported. With typical use and no battery, about 4,787 kWh of the 5,720 kWh a 12-panel system makes in Ystalyfera goes to the grid, around £574 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Do solar panels work in winter in Ystalyfera?
Yes, at a lower level. PVGIS gives Ystalyfera 24.6 kWh per kWp in December and 27.4 in January, so a 12-panel system makes about 160 kWh and 170 kWh in those months, against 730 kWh in May. Winter output mostly covers daytime use rather than exporting.
How Ystalyfera compares with its neighbours
How the towns nearest Ystalyfera compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Ystalyfera |
|---|---|---|
| Ystalyfera | 900 | this town |
| Clydach | 981 | +81 kWh |
| Neath | 996 | +96 kWh |
| Ammanford | 969 | +69 kWh |
| Baglan | 1,027 | +127 kWh |
| Swansea | 1,023 | +123 kWh |
| Maesteg | 954 | +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 Ystalyfera: Solar panels in Ystalyfera 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 Ystalyfera homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Are solar panels worth it in 2026? Here is the actual maths
Roughly £1,000 per kWp installed, offsetting electricity at 26.32p a unit. The real arithmetic.
Read the guide →Adding a battery to solar panels you already own
Retrofitting a battery to working solar is straightforward. The paperwork is where people trip up.
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 →The Boiler Upgrade Scheme, explained
A fixed amount, claimed on your behalf by our installation teams, with a real deadline on the £9,000 version.
Read the guide →Which tariffs are actually built for battery charging
A battery buys cheap and uses dear. The tariff decides how much that is worth.
Read the guide →MCS, HIES, RECC, NAPIT, TrustMark and Flexi-Orb: which badge does what
Six logos, six different jobs. What each scheme covers, and which are actually required.
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.