South West England
Solar Panels in Cornwall
We connect homeowners across Cornwall with MCS-certified solar installers. Cornwall's exposed, low-latitude Atlantic coastline gives it the highest recorded solar irradiance on the British mainland, and its granite-and-slate cottage housing stock is largely low-rise with open southerly aspects.
Solar generation in Cornwall
Using PVGIS irradiance data for South West England, a 4 kWp south-facing array in Cornwall produces roughly 4,320 kWh per year. At the April 2026 Ofgem price cap of 24.50p/kWh, that covers £1,058 of electricity you would otherwise buy from the grid.
On top of bill savings, surplus energy exported to the grid earns Smart Export Guarantee (SEG) payments — typically 4–6p/kWh with the main suppliers, or up to 15p/kWh with specialist tariffs like Octopus Outgoing.
A typical 4 kWp system with a 5 kWh battery costs £7,000–£11,000 installed across Cornwall. At current energy prices, most homeowners break even within 8–10 years.
Local grid: National Grid Electricity Distribution (South West)
Anywhere in Cornwall, the grid connection for a new system goes via National Grid Electricity Distribution (South West). Smaller systems (up to 3.68 kW) just need a G98 notification, while bigger ones need G99 approval — allow up to 45 working days for that. Either way, it's your MCS-certified installer's job, not an added fee.
About Cornwall
Cornwall's granite-and-slate cottage housing stock is largely low-rise with open southerly aspects, which pairs well with the county's exceptional solar irradiance. The UNESCO-listed Cornish mining landscape and the Eden Project sit alongside the surf-tourism coast around Newquay and St Ives.
Coverage across Cornwall
No single town in Cornwall has its own page here yet, but that doesn't limit coverage — our installer network reaches Truro, Newquay, St Ives and Falmouth and everywhere else in the county. Submit a quote request below and we'll take it from there.
Frequently asked questions — Cornwall
What parts of Cornwall does your installer network reach?+
We're a matching service covering the whole of Cornwall, including Truro, Newquay, St Ives and Falmouth — plus every smaller town and village in between. We connect you with MCS-certified installers who work across the county, whether or not your specific town already has its own dedicated page on this site.
How much electricity will solar panels generate in Cornwall?+
A 4 kWp south-facing system in Cornwall generates roughly 4,320 kWh a year, based on PVGIS irradiance data for South West England — worth roughly £1,058 at the April 2026 Ofgem price cap of 24.50p/kWh. Cornwall's exposed, low-latitude Atlantic coastline gives it the highest recorded solar irradiance on the British mainland, and its granite-and-slate cottage housing stock is largely low-rise with open southerly aspects.
Who is the electricity network operator in Cornwall?+
Cornwall sits on the National Grid Electricity Distribution (South West) network. Smaller systems (up to 3.68 kW) only need a G98 notification; larger ones need G99 approval, which can take up to 45 working days — your installer takes care of the paperwork either way, at no extra cost.
How long is the payback period for solar in Cornwall?+
A typical 4 kWp system with a 5 kWh battery costs £7,000–£11,000 installed. On Cornwall's 1080 kWh-per-kWp yield and current energy prices, most homeowners break even within 8–10 years, and Smart Export Guarantee (SEG) payments on surplus exported energy reduce that further.