Monmouthshire
Solar panels in Caldicot, priced before anyone visits.
About 6,510 kWh a year from 12 panels in Caldicot, £6,360 installed, with your system designed 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 Caldicot roof makes, month by month
PVGIS puts Caldicot at 1,023 kWh per kWp a year, 2% above our Monmouthshire county estimate. 69% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 36.2 |
| February | 52.7 |
| March | 87.1 |
| April | 117 |
| May | 128 |
| June | 127 |
| July | 129 |
| August | 111 |
| September | 95.7 |
| October | 64.2 |
| November | 42.3 |
| December | 33.2 |
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: Caldicot makes 1,023 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Caldicot is 11% above it.
How Caldicot compares
Small towns rarely get published solar figures, so here are the numbers for Caldicot. It is one of 16 Monmouthshire towns we track, and it ranks 3rd of 16 for solar yield, a town of 9,980 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,023 kWh per kWp a year, 2.80 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £915 of year one benefit, £247 of it from your own generation and £668 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 Caldicot's own yield.
Planning applications here go through Monmouthshire; nationally, the House of Commons Library classes Caldicot 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.
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.
Modelled for Caldicot at 51.59116, -2.75052 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
The network operator for Caldicot
The distribution network operator (DNO) for Caldicot is National Grid Electricity Distribution (NGED), which runs the South Wales licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means NGED is notified within 28 days of switch-on rather than asked beforehand.
Larger systems go through G99 instead, applied for before installation. On timing: 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.
Beyond the panels: heating and car charging in Caldicot
A heat pump in Caldicot
In December, the darkest month here, 12 panels in Caldicot make about 210 kWh. That is when a heat pump runs hardest, so its running cost in Caldicot 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 Caldicot
Summer is where a car earns its place. In July, 12 panels in Caldicot make about 820 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
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.
Solar panel servicing and repair in Caldicot
If a system in Caldicot is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Solar in Caldicot: your questions answered
How much energy would 12 solar panels make in Caldicot?
Caldicot averages 2.80 peak sun hours a day, which PVGIS turns into 1,023 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,510 kWh, 69% of it between April and September.
What does a typical solar system cost in Caldicot?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Caldicot, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,510 kWh a year. The final figure comes from your roof on the design call.
Who is the network operator in Caldicot, 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 happens to the solar I do not use in Caldicot?
Around £668 a year at 12p per kWh, for the roughly 5,570 kWh a 12-panel system in Caldicot exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How does solar perform in Caldicot in the winter months?
December is the weakest month in Caldicot: about 210 kWh from 12 panels, against 820 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Caldicot 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 Caldicot |
|---|---|---|
| Caldicot | 1,023 | this town |
| Chepstow | 1,032 | +9 kWh |
| Portishead | 1,019 | −4 kWh |
| Patchway | 1,013 | −10 kWh |
| Filton | 1,014 | −9 kWh |
| Bradley Stoke | 1,009 | −14 kWh |
| Newport | 1,029 | +6 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 Caldicot: Solar panels in Caldicot from OVO Solar & Battery
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.
Further reading for Caldicot
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels need direct sunlight? Not really, and here is why
No. Solar cells respond to light hitting them, not to a clear line of sight to the sun.
Read the guide →GivEnergy in administration: what owners should do now
The sourced timeline, the warranty position, and the owner's checklist for this month.
Read the guide →Smart charge point regulations, explained
Why your charger arrives pre-set to charge overnight, and why it waits before it starts.
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 →EV tariffs compared: the cheapest overnight windows
Overnight rates of 6.99p to 9p against a 26.32p capped average, compared.
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.