Plymouth faces the sea on England's south-west coast. Our modelling puts it near the top of the UK range for yearly solar output. This page explains what to expect from panels in the city, how planning works, and how a Pier Solar project runs.
Solar output in Plymouth
We modelled the city with PVGIS, the European Commission's free solar tool. For Plymouth it gives about 1,100 kWh a year for every 1 kWp of panels, at an ideal angle and direction. Across the UK, a well-placed 1 kWp typically makes about 850 to 1,150 kWh a year, so Plymouth is near the top. These are modelled estimates, not a promise.
A typical home system is around 4 kWp, which is about nine or ten modern panels. In Plymouth that could make roughly 4,400 kWh a year on a well-placed roof. For comparison, a typical home uses about 2,500 kWh of electricity a year, according to Ofgem. As a result, you may export a large share, so the export rate and a battery both deserve a look.
Our guide to battery storage costs and sizing explains what a battery adds. Meanwhile, our page on battery storage systems shows how we specify one.
Homes, roofs and planning in Plymouth
Most homes in England can add panels without a planning application. However, the rules changed on 27 August 2026. On a pitched roof, panels can stick out no more than 20 cm and must stay below the highest point. On a flat roof, they can usually rise no more than 60 cm.
Plymouth City Council lists 15 conservation areas. They include the Barbican, The Hoe, Mannamead, Stoke, Devonport and the City Centre. The council says you may need permission before installing solar panels in a conservation area. A listed building also needs consent before you add panels.
Because of this, we check your address early. A competent person must also confirm the roof can carry the panels. Salt air near the coast is a fair question, so we specify our panel and inverter installation with sound fixings and cable routes.
How a Pier Solar project runs in Plymouth
Pier Solar designs and specifies each system. We do not fit it ourselves. Vetted, MCS-certified installation partners do the work, and we coordinate the job from the first survey to handover.
Here is the usual order of work.
- You send an enquiry through our online form, with a few details about your roof and bills.
- We design the system and set out the panels, inverter and any battery.
- A partner installs it to our specification.
- The partner notifies your network operator, or applies first for larger systems.
- You receive an MCS certificate, usually within about ten working days.
Plymouth is in the National Grid Electricity Distribution South West area. Your installer normally handles the paperwork. Small systems up to 3.68 kW per phase are notified within 28 days of installation. However, bigger systems need approval before they connect, so we plan for that early.
Costs, savings and export
A typical 4 to 4.5 kWp home system typically costs roughly £6,000 to £8,000 installed, based on government cost data for 2025/26. Installing solar in a home in Great Britain is currently VAT-free until 31 March 2027. Still, from 1 April 2027 the rate is due to return to 5%, unless the government changes it.
Each kWh of solar you use saves the unit rate you would otherwise pay. The Smart Export Guarantee pays you for surplus power you send to the grid. Because each supplier sets its own rate, compare tariffs first. Our guide to the Smart Export Guarantee explains how to join.
If you drive an electric car, solar can charge it too. For example, daytime charging uses power that might otherwise be exported. Read our guide to charging an electric car from solar panels for the details.
Nearby areas we cover
The same approach applies along the south coast. We also cover solar installation in Bristol to the north-east and solar panels in Southampton to the east. Output and planning rules differ in each place, so every quote starts with your own roof.
Frequently Asked Questions
- PVGIS models about 1,100 kWh a year per kWp on an ideal roof. A 4 kWp system could therefore make roughly 4,400 kWh. Your own roof will differ, so we model it before quoting.
- You may. The council says solar panels in a conservation area can need its permission, and listed buildings need consent. Check with Plymouth City Council, and we will raise it during design.
- It can be, because a high-yield roof exports a lot. Home batteries typically last about 10 to 12 years. We size one to your use rather than selling a standard unit.
- A vetted, MCS-certified partner installs them to our specification. Pier Solar designs the system and coordinates the project. Start with our online enquiry form.