Flintshire
Solar panels in Holywell, with the numbers shown.
About 6,050 kWh a year from 12 panels in Holywell, £6,360 installed, with your system designed on a free 30-minute video call.
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What a roof in Holywell can generate
Holywell's best month is May, at 124.7 kWh per kWp; December manages 27.3. Over the year that comes to 952 kWh per kWp, 4% above our Flintshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 30.9 |
| February | 50.7 |
| March | 83.9 |
| April | 110 |
| May | 125 |
| June | 118 |
| July | 116 |
| August | 106 |
| September | 88.1 |
| October | 58.9 |
| November | 37.3 |
| December | 27.3 |
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: Holywell makes 952 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Holywell is 3% above it.
How Holywell compares
Small towns rarely get published solar figures, so here are the numbers for Holywell. It is one of 8 Flintshire towns we track, and it ranks 6th of 8 for solar yield, a town of 7,806 people in the House of Commons Library settlement data. PVGIS gives its roofs 952 kWh per kWp a year, 2.61 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £861 of year one benefit, £247 of it from your own generation and £614 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 Holywell's own yield.
Holywell sits within Flintshire, 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.
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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 Holywell at 53.27549, -3.22543 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 Holywell network
The distribution network operator (DNO) for Holywell is SP Energy Networks, which runs the North Wales, Merseyside and Cheshire licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means SP Energy Networks is notified within 28 days of switch-on rather than asked beforehand.
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.
Beyond the panels: heating and car charging in Holywell
A heat pump in Holywell
Solar and a heat pump pull in opposite directions through the year: Holywell's roofs make 930 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.
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 Holywell
From April to September, 70% of a Holywell 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.
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.
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 Holywell
Guidance is nationwide, so the benchmarks hold in Holywell: repair costs, service scope, and when the inverter is the real fault.
Solar in Holywell: your questions answered
What could a roof in Holywell generate?
PVGIS puts a roof in Holywell at 952 kWh per kWp a year, 2.61 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,050 kWh a year, most of it between April and September.
What would 12 solar panels cost in Holywell?
£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 Holywell differs is output: about 6,050 kWh a year from that system.
Do I need permission from the DNO for solar in Holywell?
Usually not in advance. SP Energy Networks, the network operator for Holywell, 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 Holywell?
It is exported. With typical use and no battery, about 5,118 kWh of the 6,050 kWh a 12-panel system makes in Holywell goes to the grid, around £614 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 Holywell?
Yes, at a lower level. PVGIS gives Holywell 27.3 kWh per kWp in December and 30.9 in January, so a 12-panel system makes about 170 kWh and 200 kWh in those months, against 790 kWh in May. Winter output mostly covers daytime use rather than exporting.
How Holywell 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 Holywell |
|---|---|---|
| Holywell | 952 | this town |
| Flint | 962 | +10 kWh |
| Heswall | 985 | +33 kWh |
| Neston | 969 | +17 kWh |
| West Kirby | 991 | +39 kWh |
| Connah's Quay | 967 | +15 kWh |
| Greasby | 990 | +38 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Holywell: Solar panels in Holywell from OVO Solar & Battery
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Further reading for Holywell
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels increase home value? What the actual data shows
The largest UK study found a 6.1% to 7.1% sale price premium. Here is the full picture.
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 →Charging an EV from your own solar
Every surplus kWh is 3.6 to 5 miles. Whether that beats a 7p overnight rate is arithmetic.
Read the guide →Which homes suit a heat pump, and which need work first
The trial data says no property type is unsuitable. Design quality decides the outcome.
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 →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.