Flintshire, Wales
Solar panels across Flintshire, designed on a free call.
A 12-panel roof in Flintshire makes about 5,830 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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What a roof in Flintshire can generate
PVGIS puts Flintshire at 917 kWh per kWp a year, 1% below the mean of our 85 county estimates. 70% of it arrives between April and September, peaking in May.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 30.1 |
| February | 47.8 |
| March | 79.6 |
| April | 106 |
| May | 119 |
| June | 114 |
| July | 113 |
| August | 102 |
| September | 84.7 |
| October | 56.6 |
| November | 37 |
| December | 26.8 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 917 kWh per kWp in Flintshire against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Flintshire 1% below it.
How Flintshire compares
Flintshire ranks joint 47th of the 85 counties we track for solar yield. Self use does the heavy lifting here: of the £834 year one benefit on a typical 12 panel system, £247 comes from replacing 26.32p imports with your own generation, which is why battery sizing matters more than panel count.
These are county-level starting numbers. A town page gives the figure for its own centroid, and your design call replaces both with your roof, its shading and your bills.
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
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Generation from PVGIS v5.2 (European Commission JRC, SARAH3), retrieved August 2026 for a representative point in Flintshire (53.2206, -3.2113), 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 Flintshire network
On NESO's licence-area map, the middle of Flintshire falls in North Wales, Merseyside and Cheshire, which SP Energy Networks operates, and so do all the towns we cover in the county.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, SP Energy Networks 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. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds SP Energy Networks as it does every network operator.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Flintshire
A heat pump in Flintshire
Solar and a heat pump pull in opposite directions through the year: Flintshire's roofs make 900 kWh from November to February on a 12-panel system, and 2,850 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 Flintshire
From April to September, 70% of a Flintshire 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.
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).
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Flintshire solar questions
What could a roof in Flintshire generate?
PVGIS puts a roof in Flintshire at 917 kWh per kWp a year, 2.51 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 5,830 kWh a year, most of it between April and September.
What would 12 solar panels cost in Flintshire?
£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 Flintshire differs is output: about 5,830 kWh a year from that system.
Do I need permission from the DNO for solar in Flintshire?
Usually not in advance. SP Energy Networks, the network operator for Flintshire, 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. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds SP Energy Networks as it does every network operator. "See our DNO explainer.
How much would export pay on a system in Flintshire?
It is exported. With typical use and no battery, about 4,895 kWh of the 5,830 kWh a 12-panel system makes in Flintshire goes to the grid, around £587 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 Flintshire?
Yes, at a lower level. PVGIS gives Flintshire 26.8 kWh per kWp in December and 30.1 in January, so a 12-panel system makes about 170 kWh and 190 kWh in those months, against 760 kWh in May. Winter output mostly covers daytime use rather than exporting.
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Reading for Flintshire homeowners
The same guidance we would talk through on your call, written down and sourced.
Do solar panels work in winter? Yes, just less than summer
Panels run on light, not sunshine. Cloud turns them down, not off. What that means for an awkward roof.
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 →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 →NAPIT, NICEIC and competent person schemes: who tells building control about your solar
Solar work is notifiable. A competent person scheme means your installation team notifies, not you.
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.