Merioneth, Wales
Solar panels in Merioneth, priced before anyone visits.
Twelve panels (6.36 kWp) here make about 5,180 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Merioneth roof makes, month by month
From 19.5 kWh per kWp in December to 110.4 in May: a roof in Merioneth makes 5.7 times as much in its best month as in its darkest, and 814 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 22.9 |
| February | 38.8 |
| March | 71.3 |
| April | 101 |
| May | 110 |
| June | 107 |
| July | 104 |
| August | 88.5 |
| September | 74.3 |
| October | 46.7 |
| November | 30.4 |
| December | 19.5 |
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: Merioneth makes 814 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Merioneth is 12% below it.
How Merioneth compares
Merioneth ranks 76th of the 85 counties we track for solar yield, 11% below the Wales average of our estimates. Lower light changes the strategy rather than the answer: pair the array with off peak charging at 8.5p and the model still finds £755 a year on a typical 12 panel system, most of it from cutting 26.32p imports.
Every figure here assumes a clear, south-facing roof at 35 degrees in the middle of Merioneth. Yours will differ; the calculator below lets you test panels, batteries and export rates first.
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 Merioneth (52.8292, -3.7998), 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.
SP Energy Networks and your Merioneth connection
SP Energy Networks is the distribution network operator (DNO) for Merioneth, running its North Wales, Merseyside and Cheshire licence area.
What decides the paperwork is the inverter and battery output, not the number of panels. Up to 3.68kW per phase, a system follows G98: SP Energy Networks is notified within 28 days of commissioning and nothing has to be approved first.
Above that, G99 means applying before the work is booked. 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 Merioneth
A heat pump in Merioneth
Heating demand peaks when solar is weakest. In Merioneth, a 12-panel system makes about 120 kWh in December and 150 kWh in January, a fraction of its 700 kWh in May, which is why a heat pump here is costed on its tariff first.
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 Merioneth
Merioneth's May output, about 700 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
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.
Installed prices, the same across Merioneth
Every system is designed around your roof on the free call before anything is fitted.
Common questions about solar in Merioneth
How much energy would 12 solar panels make in Merioneth?
Merioneth averages 2.23 peak sun hours a day, which PVGIS turns into 814 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 5,180 kWh, 72% of it between April and September.
Is solar more expensive in Merioneth?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Merioneth, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 5,180 kWh a year here, which is what drives payback.
Who is the network operator in Merioneth, and do I need a G99 application?
The operator is SP Energy Networks. Most home systems use the G98 route, a notification within 28 days of switch-on for up to 3.68kW per phase, so nothing waits on the network. Above that, G99 applies and has to be granted 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. Your design call checks which route yours needs.
What could I earn from exporting in Merioneth?
On the 12p export scenario, a 12-panel system in Merioneth sends about 4,240 kWh a year to the grid, worth around £509. The export rates table compares what each supplier pays.
How does solar perform in Merioneth in the winter months?
December is the weakest month in Merioneth: about 120 kWh from 12 panels, against 700 kWh in May. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
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 Merioneth homeowners
The same guidance we would talk through on your call, written down and sourced.
DNO application timescales, network by network: from a G98 notification to a G99 approval
Fit and notify within 28 days, or wait ten working days to 45 for a yes. System size decides which.
Read the guide →Whole home backup or partial backup? The runtime arithmetic
Whole home backup sounds obvious until you do the runtime maths. Here is how to choose the right tier.
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 →What are the disadvantages of a heat pump? Six honest ones
Six real disadvantages, worth planning around rather than a reason to rule one out.
Read the guide →Why tariff choice moves payback more than kit choice
Identical kit, five times the export income. The tariff decision worked through with August 2026 rates.
Read the guide →What MCS certification actually is, and why your export payments depend on it
The badge that decides whether your solar earns export payments. It cannot be added later.
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.