Glamorgan
Solar panels in Clydach, with the numbers shown.
About 6,240 kWh a year from 12 panels in Clydach, £6,360 installed, with your system designed on a free 30-minute video call.
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What a roof in Clydach can generate
From 31.7 kWh per kWp in December to 123.5 in May: a roof in Clydach makes 3.9 times as much in its best month as in its darkest, and 981 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 34.9 |
| February | 52.8 |
| March | 86 |
| April | 116 |
| May | 124 |
| June | 121 |
| July | 118 |
| August | 104 |
| September | 91.1 |
| October | 61.3 |
| November | 42.4 |
| December | 31.7 |
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 981, Clydach is 6% above it.
How Clydach compares
Small towns rarely get published solar figures, so here are the numbers for Clydach. It is one of 32 Glamorgan towns we track, and it ranks 23rd of 32 for solar yield, a town of 8,527 people in the House of Commons Library settlement data. PVGIS gives its roofs 981 kWh per kWp a year, 2.69 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £883 of year one benefit, £247 of it from your own generation and £636 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 Clydach's own yield.
Clydach sits within Swansea, 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.
Modelled for Clydach at 51.70015, -3.88819 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Connecting solar to the Clydach network
Clydach 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.
Below 3.68kW per phase of inverter and battery output, the G98 route applies: the installation is notified to NGED within 28 days of commissioning, with no prior approval.
Anything bigger is a G99 case and is applied for first. 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 Clydach
A heat pump in Clydach
Solar and a heat pump pull in opposite directions through the year: Clydach's roofs make 1,030 kWh from November to February on a 12-panel system, and 2,960 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
Grant support in Wales comes from the Boiler Upgrade Scheme: £7,500 for an air source or ground source heat pump, £2,500 for air-to-air, and an extra £1,500 until March 2027 where the home is heated by oil or LPG off the gas grid (gov.uk, checked 28 September 2026).
Charging an EV in Clydach
From April to September, 69% of a Clydach 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.
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.
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 Clydach
Guidance is nationwide, so the benchmarks hold in Clydach: repair costs, service scope, and when the inverter is the real fault.
Solar in Clydach: your questions answered
What could a roof in Clydach generate?
PVGIS puts a roof in Clydach at 981 kWh per kWp a year, 2.69 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,240 kWh a year, most of it between April and September.
How much are solar panels in Clydach?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Clydach before a battery. What Clydach changes is the return, about 6,240 kWh a year from that system, and your design call prices your actual roof.
Do I need permission from the DNO for solar in Clydach?
Usually not in advance. NGED, the network operator for Clydach, 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 can I earn from exporting solar in Clydach?
With typical use and no battery, a 12-panel system in Clydach exports about 5,302 kWh a year. At 12p per kWh that is roughly £636; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Do solar panels work in winter in Clydach?
Yes, at a lower level. PVGIS gives Clydach 31.7 kWh per kWp in December and 34.9 in January, so a 12-panel system makes about 200 kWh and 220 kWh in those months, against 790 kWh in May. Winter output mostly covers daytime use rather than exporting.
How Clydach 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 Clydach |
|---|---|---|
| Clydach | 981 | this town |
| Neath | 996 | +15 kWh |
| Swansea | 1,023 | +42 kWh |
| Baglan | 1,027 | +46 kWh |
| Ystalyfera | 900 | −81 kWh |
| Gorseinon | 1,040 | +59 kWh |
| Gowerton | 1,063 | +82 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 Clydach: Solar panels in Clydach from OVO Solar & Battery
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Further reading for Clydach
Sourced, dated and written by us. The same ground we cover on your free call.
Solar panel grants and funding in 2026: what actually exists, and what is a sales pitch
No blanket grant exists, and the four supports that do exist are better than most of the adverts.
Read the guide →Tesla Powerwall 3 vs Duracell Dura16: which fits your home?
The two packages we actually price, compared on the numbers that decide it.
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 an air source heat pump actually works
It moves heat rather than making it. The cycle, the efficiency numbers and the trade-offs.
Read the guide →What the Smart Export Guarantee actually is
The scheme obliges suppliers to pay above zero, and leaves the rate to them.
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.