Cornwall
Solar panels in Penryn, with the numbers shown.
A 12-panel roof in Penryn makes about 6,750 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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What a roof in Penryn can generate
PVGIS puts Penryn at 1,062 kWh per kWp a year, 4% above our Cornwall county estimate. 69% of it arrives between April and September, peaking in May.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38.3 |
| February | 56.4 |
| March | 90.8 |
| April | 123 |
| May | 131 |
| June | 130 |
| July | 128 |
| August | 120 |
| September | 100 |
| October | 68.3 |
| November | 44.1 |
| December | 31.8 |
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: Penryn makes 1,062 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Penryn is 15% above it.
How Penryn compares
Small towns rarely get published solar figures, so here are the numbers for Penryn. It is one of 14 Cornwall towns we track, and it ranks 5th of 14 for solar yield, a town of 11,868 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,062 kWh per kWp a year, 2.91 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £945 of year one benefit, £247 of it from your own generation and £698 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Penryn's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Penryn sits within Cornwall, 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 Penryn at 50.1689, -5.11242 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 Penryn network
National Grid Electricity Distribution (NGED) owns and runs the local electricity network in Penryn, as part of its South West England 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.
Anything bigger is a G99 case and is applied for first. 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 Penryn
A heat pump in Penryn
Solar and a heat pump pull in opposite directions through the year: Penryn's roofs make 1,090 kWh from November to February on a 12-panel system, and 3,240 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
In England, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Penryn
From April to September, 69% of a Penryn roof's yearly output arrives, peaking at about 830 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.
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.
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Penryn
Guidance is nationwide, so the benchmarks hold in Penryn: repair costs, service scope, and when the inverter is the real fault.
Common questions about solar in Penryn
What could a roof in Penryn generate?
PVGIS puts a roof in Penryn at 1,062 kWh per kWp a year, 2.91 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,750 kWh a year, most of it between April and September.
How much are solar panels in Penryn?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Penryn before a battery. What Penryn changes is the return, about 6,750 kWh a year from that system, and your design call prices your actual roof.
Do I need permission from the DNO for solar in Penryn?
Usually not in advance. NGED, the network operator for Penryn, 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. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. "See our DNO explainer.
How much can I earn from exporting solar in Penryn?
With typical use and no battery, a 12-panel system in Penryn exports about 5,818 kWh a year. At 12p per kWh that is roughly £698; 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 Penryn?
Yes, at a lower level. PVGIS gives Penryn 31.8 kWh per kWp in December and 38.3 in January, so a 12-panel system makes about 200 kWh and 240 kWh in those months, against 830 kWh in May. Winter output mostly covers daytime use rather than exporting.
How Penryn compares with its neighbours
How the towns nearest Penryn compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Penryn |
|---|---|---|
| Penryn | 1,062 | this town |
| Falmouth | 1,056 | −6 kWh |
| Redruth | 1,038 | −24 kWh |
| Truro | 1,052 | −10 kWh |
| Helston | 1,110 | +48 kWh |
| Camborne | 1,026 | −36 kWh |
| Hayle | 1,102 | +40 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 Penryn: Solar panels in Penryn from OVO Solar & Battery
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Reading for Penryn homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels work in winter? Yes, just less than summer
Panels run on light, not sunshine. Cloud turns them down, not off. What that means for an awkward roof.
Read the guide →Sigenergy SigenStor review: the 5-in-1 tower examined
The 5-in-1 tower reviewed by a site that does not sell it, warranty arithmetic included.
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 →How an air source heat pump actually works
It moves heat rather than making it. The cycle, the efficiency numbers and the trade-offs.
Read the guide →Will energy prices keep rising, and by how much
The January forecasts jumped fast. What is confirmed, what is guessed, and whether solar is a real hedge.
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.