Pembrokeshire, Wales
Solar panels in Pembrokeshire, priced before anyone visits.
A 12-panel roof in Pembrokeshire makes about 6,350 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
Get my free quote
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.
or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
What a roof in Pembrokeshire can generate
Pembrokeshire's best month is May, at 128 kWh per kWp; December manages 29.9. Over the year that comes to 999 kWh per kWp, 8% above the mean of our 85 county estimates.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 34.1 |
| February | 54.8 |
| March | 87.9 |
| April | 119 |
| May | 128 |
| June | 125 |
| July | 121 |
| August | 108 |
| September | 89.7 |
| October | 61.5 |
| November | 40.7 |
| December | 29.9 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Pembrokeshire makes 999 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Pembrokeshire is 8% above it.
How Pembrokeshire compares
Pembrokeshire ranks joint 25th of the 85 counties we track for solar yield, 9% above the Wales average of our estimates. At 2.74 peak sun hours a day the sums lean on a healthy mix: £247 of the year one benefit here comes from solar you use yourself, with export at 12p adding £650.
Treat these as calibration rather than a quote. The calculator below opens on Pembrokeshire's own PVGIS yield and prices a 12 panel system at £6,360 installed before any battery; your free design call reworks every number for your roof.
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.
Generation from PVGIS v5.2 (European Commission JRC, SARAH3), retrieved August 2026 for a representative point in Pembrokeshire (51.8559, -4.8855), assuming 1 kWp, 14% system loss, 35 degree pitch, due south. Import valued at 26.32p/kWh (Ofgem price cap average, Oct to Dec 2026); off-peak charging at 8.5p/kWh where used (a supplier's published off-peak rate, checked September 2026); export at the scenario you pick, from the dated tariff table. Prices are installed pricing, August 2026, standard installations; 530W LONGi panels at £1,000 per kWp. Estimates for illustration, not a quote: your free design call prices your actual roof.
Connecting solar to the Pembrokeshire network
National Grid Electricity Distribution (NGED) is the distribution network operator (DNO) for Pembrokeshire, running its South Wales licence area.
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.
Heat pumps and EV charging in Pembrokeshire
A heat pump in Pembrokeshire
Solar and a heat pump pull in opposite directions through the year: Pembrokeshire's roofs make 1,010 kWh from November to February on a 12-panel system, and 3,070 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
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 Pembrokeshire
From April to September, 69% of a Pembrokeshire roof's yearly output arrives, peaking at about 810 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 across Pembrokeshire
Every system is designed around your roof on the free call before anything is fitted.
Pembrokeshire solar questions
What could a roof in Pembrokeshire generate?
PVGIS puts a roof in Pembrokeshire at 999 kWh per kWp a year, 2.74 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,350 kWh a year, most of it between April and September.
How much are solar panels in Pembrokeshire?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Pembrokeshire before a battery. What Pembrokeshire changes is the return, about 6,350 kWh a year from that system, and your design call prices your actual roof.
Do I need permission from the DNO for solar in Pembrokeshire?
Usually not in advance. NGED, the network operator for Pembrokeshire, 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 Pembrokeshire?
With typical use and no battery, a 12-panel system in Pembrokeshire exports about 5,417 kWh a year. At 12p per kWh that is roughly £650; 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 Pembrokeshire?
Yes, at a lower level. PVGIS gives Pembrokeshire 29.9 kWh per kWp in December and 34.1 in January, so a 12-panel system makes about 190 kWh and 220 kWh in those months, against 810 kWh in May. Winter output mostly covers daytime use rather than exporting.
Towns we cover in Pembrokeshire
4 Pembrokeshire towns have their own page, each with PVGIS figures, a network operator and a monthly curve for its own location.
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 Pembrokeshire homeowners
The same guidance we would talk through on your call, written down and sourced.
Why solar panels stop working, and how to work out which one it is
There is an order to this, and it starts at the inverter display rather than the roof.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
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 →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 →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
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.