Buckinghamshire
Solar panels in Chalfont St Peter, sized to your roof.
Twelve panels (6.36 kWp) here make about 6,450 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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What a roof in Chalfont St Peter can generate
PVGIS puts Chalfont St Peter at 1,014 kWh per kWp a year, 2% above our Buckinghamshire county estimate. 68% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.3 |
| February | 53.3 |
| March | 87.9 |
| April | 113 |
| May | 121 |
| June | 122 |
| July | 124 |
| August | 111 |
| September | 94.9 |
| October | 65.7 |
| November | 45.5 |
| December | 36 |
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: Chalfont St Peter makes 1,014 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Chalfont St Peter is 10% above it.
How Chalfont St Peter compares
Small towns rarely get published solar figures, so here are the numbers for Chalfont St Peter. It is one of 19 Buckinghamshire towns we track, and it ranks joint 5th of 19 for solar yield, a town of 13,738 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,014 kWh per kWp a year, 2.78 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £908 of year one benefit, £247 of it from your own generation and £661 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 Chalfont St Peter's own yield.
Chalfont St Peter sits within Buckinghamshire, 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.
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 Chalfont St Peter at 51.60716, -0.5569 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 Chalfont St Peter network
Chalfont St Peter is served by Scottish and Southern Electricity Networks (SSEN): the town's centre falls inside its Southern England 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 SSEN within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
A bigger inverter or battery output needs a G99 application in advance. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW.
Sources: NESO DNO licence areas (3 May 2024); SSEN, micro-generation connections page, checked 25 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Chalfont St Peter
A heat pump in Chalfont St Peter
Solar and a heat pump pull in opposite directions through the year: Chalfont St Peter's roofs make 1,110 kWh from November to February on a 12-panel system, and 3,040 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
Grant support in England 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 Chalfont St Peter
A 12-panel roof in Chalfont St Peter makes about 790 kWh in July. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
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 Chalfont St Peter
Guidance is nationwide, so the benchmarks hold in Chalfont St Peter: repair costs, service scope, and when the inverter is the real fault.
Solar in Chalfont St Peter: your questions answered
What could a roof in Chalfont St Peter generate?
PVGIS puts a roof in Chalfont St Peter at 1,014 kWh per kWp a year, 2.78 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,450 kWh a year, most of it between April and September.
How much are solar panels in Chalfont St Peter?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Chalfont St Peter before a battery. What Chalfont St Peter changes is the return, about 6,450 kWh a year from that system, and your design call prices your actual roof.
Do I need permission from the DNO for solar in Chalfont St Peter?
Usually not in advance. SSEN, the network operator for Chalfont St Peter, 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. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW. "See our DNO explainer.
How much can I earn from exporting solar in Chalfont St Peter?
With typical use and no battery, a 12-panel system in Chalfont St Peter exports about 5,512 kWh a year. At 12p per kWh that is roughly £661; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Do solar panels work in winter in Chalfont St Peter?
Yes, at a lower level. PVGIS gives Chalfont St Peter 36 kWh per kWp in December and 39.3 in January, so a 12-panel system makes about 230 kWh and 250 kWh in those months, against 790 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Chalfont St Peter compares with its neighbours
How the towns nearest Chalfont St Peter compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Chalfont St Peter |
|---|---|---|
| Chalfont St Peter | 1,014 | this town |
| Gerrards Cross | 1,023 | +9 kWh |
| Chorleywood | 1,011 | −3 kWh |
| Beaconsfield | 1,011 | −3 kWh |
| Rickmansworth | 1,019 | +5 kWh |
| Amersham | 1,009 | −5 kWh |
| Flackwell Heath and Wooburn Green | 1,009 | −5 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 Chalfont St Peter: Solar panels in Chalfont St Peter from OVO Solar & Battery
Also near Chalfont St Peter
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Reading for Chalfont St Peter homeowners
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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.