Caernarfonshire
Solar panels in Conwy, with the numbers shown.
Twelve panels (6.36 kWp) here make about 5,930 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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Conwy's solar year
PVGIS puts Conwy at 933 kWh per kWp a year, 29% above our Caernarfonshire county estimate. 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 | 31.2 |
| February | 48.5 |
| March | 83.4 |
| April | 110 |
| May | 123 |
| June | 119 |
| July | 115 |
| August | 101 |
| September | 84 |
| October | 56.9 |
| November | 36 |
| December | 26 |
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 933, Conwy is 1% above it.
How Conwy compares
Small towns rarely get published solar figures, so here are the numbers for Conwy. It is one of 4 Caernarfonshire towns we track, and it ranks 2nd of 4 for solar yield, a town of 15,635 people in the House of Commons Library settlement data. PVGIS gives its roofs 933 kWh per kWp a year, 2.56 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £847 of year one benefit, £247 of it from your own generation and £600 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 Conwy's own yield.
Planning applications in Conwy go to its own council, 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 Conwy at 53.28839, -3.82247 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Who runs the grid in Conwy
Conwy is served by SP Energy Networks: the town's centre falls inside its North Wales, Merseyside and Cheshire licence area on NESO's boundary map.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to SP Energy Networks within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
Anything bigger is a G99 case and is applied for 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.
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 Conwy
A heat pump in Conwy
A heat pump does most of its work from November to February. Over those four months, 12 panels in Conwy make about 900 kWh, against 2,910 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
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 Conwy
From April to September, 70% of a Conwy roof's yearly output arrives, peaking at about 780 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 in every town
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Conwy
Faults, servicing and ageing inverters follow the same economics in Conwy as anywhere else, and the guides below price them plainly.
Common questions about solar in Conwy
What does a solar panel system produce in Conwy?
Each kWp of panels in Conwy makes 933 kWh a year on PVGIS figures, so a typical 12-panel system produces around 5,930 kWh, from about 170 kWh in December up to 780 kWh in May.
How much are solar panels in Conwy?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Conwy before a battery. What Conwy changes is the return, about 5,930 kWh a year from that system, and your design call prices your actual roof.
Would a system in Conwy need approval from the network operator?
Conwy is on SP Energy Networks' network (North Wales, Merseyside and Cheshire licence area). Systems up to 3.68kW per phase of inverter output follow G98: SP Energy Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Conwy?
With typical use and no battery, a 12-panel system in Conwy exports about 4,997 kWh a year. At 12p per kWh that is roughly £600; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Is solar worth it in Conwy in winter?
It works, but the year is lopsided. 70% of a Conwy roof's output lands between April and September; the four months from November to February give about 900 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Conwy 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 Conwy |
|---|---|---|
| Conwy | 933 | this town |
| Llandudno | 966 | +33 kWh |
| Colwyn Bay | 933 | level |
| Abergele | 950 | +17 kWh |
| Kinmel Bay | 1,002 | +69 kWh |
| Bangor | 808 | −125 kWh |
| Rhyl | 985 | +52 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 Conwy: Solar panels in Conwy from OVO Solar & Battery
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Further reading for Conwy
Sourced, dated and written by us. The same ground we cover on your free call.
What is a DNO, and why does a company you have never heard of get a say in your solar?
The company that owns your street's cables decides what solar you can connect.
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 →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 →Sizing a heat pump: what a proper survey covers
Sized by calculation, not by rule of thumb. What the survey covers, and what guessing costs.
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 →Your MCS certificate: what it shows, when it arrives, and how a Smart Export Guarantee supplier uses it
The document your export payments hang on. Who issues it, what it shows, and how to get a copy.
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.