Commercial solar panel installers in Portsmouth
Portsmouth combines a major naval and marine industrial base (BAE Systems Maritime, Portsmouth International Port) with significant office estates at Lakeside North Harbour and Port Solent. South-coast irradiance is among the highest in the UK at 1,000+ kWh/kWp/yr, making commercial solar particularly attractive for Portsmouth offices, port logistics and the wider Hampshire industrial belt.
Best-fit sectors in Portsmouth
- Naval, marine & defence (BAE Maritime, Portsmouth Port)
- Commercial offices & financial services (Lakeside North Harbour)
- Warehousing & 3PL distribution
- Hotels, leisure & hospitality
Solar yield
Portsmouth sits in the South East irradiance band — roughly 1,000–1,080 kWh per kWp per year — the highest band of commercial solar yield in the UK.
Areas we cover near Portsmouth
Portsmouth International Port · Lakeside North Harbour · Port Solent · Fareham · Gosport · Havant · Waterlooville · Cosham · Hilsea
Postcodes: PO1, PO2, PO3, PO4, PO5, PO6, PO7, PO8, PO9
Funding for Portsmouth businesses
Portsmouth businesses typically combine the 100% Annual Investment Allowance with asset finance or a zero-CapEx PPA. The Solent LEP and Hampshire County Council Decarbonisation Pathway periodically support SME and industrial decarbonisation feasibility.See UK grants & funding guide →
Run the numbers for your Portsmouth site
Get an indicative system size, savings and payback for a commercial site in Portsmouth.Open the calculator →
Most relevant sectors for Portsmouth businesses
Based on the dominant industries across Portsmouth, these are the commercial solar specialisms most relevant locally — each links to a deeper guide.
Warehouses & Logistics in Portsmouth
Large flat roofs, high daytime demand — the strongest commercial solar fit.
See the warehouses & logistics guide →Factories & Manufacturing in Portsmouth
Heavy daytime load and process heat — fast payback on industrial roofs.
See the factories & manufacturing guide →Commercial Landlords in Portsmouth
MEES/EPC uplift, green-lease premiums and tenant resale of power.
See the commercial landlords guide →Commercial solar in Portsmouth — FAQs
Do you install commercial solar in Portsmouth?
Yes — across Portsmouth and south Hampshire including Lakeside North Harbour, Port Solent, Fareham, Gosport and Havant, with feasibility visits typically booked within 7–10 days.
How much does commercial solar cost in Portsmouth?
Indicative pricing for Portsmouth commercial sites sits at around £700–£900 per kWp installed above 100 kWp. South-coast irradiance typically delivers 4–6 year payback for sites with strong daytime load.
Is solar a fit for Portsmouth port and marine sites?
Yes — port logistics, ferry terminals and marine engineering sites typically have heavy continuous daytime electrical load, which is the ideal profile for on-site solar. Salt-air corrosion is handled via marine-grade mounting and connector specifications.
What payback can Lakeside North Harbour offices expect?
Lakeside and similar large office estates typically achieve 5–7 year payback with strong daytime occupancy load, modest cooling demand and the south-coast irradiance band.
Do Portsmouth businesses need planning permission for rooftop solar?
Most commercial rooftop solar in Portsmouth is permitted development. Listed buildings, conservation areas (parts of Old Portsmouth) and arrays above 1 MW typically need planning consent.
Which areas of Hampshire do you cover?
Portsmouth, Southampton, Fareham, Gosport, Havant, Waterlooville and the wider south-coast commercial belt through to Chichester and Bognor Regis.
Portsmouth is part of our South East commercial solar service area. See the South East regional guide →