Solar panels in Cornwall, Plymouth and 10 nearby areas
Figures updated 15 November 2026
A 4 kWp system facing south makes about 4,364 kWh a year here. For a gas-heated semi that saves £753 a year and pays back in 9.5 years, on Octopus Flux Import.
Output by roof direction
| 4 kWp at 35°, facing | kWh a year |
|---|---|
| South | 4,364 |
| South-east or south-west | 4,112 |
| East or west | 3,448 |
Electricity prices in South West England
| Price cap unit rate | 26.6p per kWh |
| Price cap standing charge | 55.6p a day |
| Outgoing Octopus export | 12.0p per kWh |
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Areas covered
Cornwall, East Devon, Exeter, Isles of Scilly, Mid Devon, North Devon, Plymouth, South Hams, Teignbridge, Torbay, Torridge, West Devon.
MCS solar zone 4 (Plymouth), electricity region South West England. Example: a semi using 2,673 kWh of electricity a year, roof facing south at 35° with no shade; savings at electricity prices from April 2027, when VAT is due to return. Every district listed has at least 95% of its postcodes in this zone and region. Areas from the ONS National Statistics Postcode Lookup; electricity regions supported by National Energy SO Open Data. Sources