Radnorshire, Wales
Solar and batteries in Radnorshire, sized to your roof.
Twelve panels (6.36 kWp) here make about 5,830 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Radnorshire roof makes, month by month
From 24.9 kWh per kWp in December to 117.6 in May: a roof in Radnorshire makes 4.7 times as much in its best month as in its darkest, and 917 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 28.4 |
| February | 46.5 |
| March | 81.7 |
| April | 109 |
| May | 118 |
| June | 115 |
| July | 114 |
| August | 100 |
| September | 85.9 |
| October | 57.1 |
| November | 37.5 |
| December | 24.9 |
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 917, Radnorshire is 1% below it.
How Radnorshire compares
Radnorshire 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
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 Radnorshire (52.2713, -3.3109), 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.
NGED and your Radnorshire connection
On NESO's licence-area map, the middle of Radnorshire falls in South Wales, which National Grid Electricity Distribution (NGED) operates, and so do all the towns we cover in the county.
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: NGED is notified within 28 days of commissioning and nothing has to be approved first.
Above that, G99 means applying before the work is booked. 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.
Adding a heat pump or an EV charger in Radnorshire
A heat pump in Radnorshire
In December, the darkest month here, 12 panels in Radnorshire make about 160 kWh. That is when a heat pump runs hardest, so its running cost in Radnorshire comes down to the tariff and the flow temperature rather 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 Radnorshire
Radnorshire's May output, about 750 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.
If you rent, or own a flat, and have private off-street parking, the government chargepoint grant covers 75% of the cost, capped at £500 a socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above prices 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.
Radnorshire solar questions
How much energy would 12 solar panels make in Radnorshire?
Radnorshire averages 2.51 peak sun hours a day, which PVGIS turns into 917 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 5,830 kWh, 70% of it between April and September.
Is solar more expensive in Radnorshire?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Radnorshire, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 5,830 kWh a year here, which is what drives payback.
Who is the network operator in Radnorshire, and do I need a G99 application?
The operator is National Grid Electricity Distribution (NGED). 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. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Your design call checks which route yours needs.
What could I earn from exporting in Radnorshire?
On the 12p export scenario, a 12-panel system in Radnorshire sends about 4,895 kWh a year to the grid, worth around £587. The export rates table compares what each supplier pays.
How does solar perform in Radnorshire in the winter months?
December is the weakest month in Radnorshire: about 160 kWh from 12 panels, against 750 kWh in May. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
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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 Radnorshire homeowners
The same guidance we would talk through on your call, written down and sourced.
How long do solar panels last? 25 to 30 years, in practice
The panels outlast the inverter by a wide margin. Plan for that, not for cleaning.
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 →What an EV charger installation actually involves
Main fuse, DNO notification, load balancing and the paperwork. What really happens.
Read the guide →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-off.
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.