Sunseam®

Commercial solar in Portsmouth

Sunseam ranks every suitable commercial roof in Portsmouth (South East) by solar opportunity, so installers find qualified sites and owners see what their roof is worth.

574
Commercial roofs ranked
149.1 MWp
Combined rooftop potential
205
At energy Band D–G

Together these roofs represent an estimated £29,252,749 in potential annual electricity savings from on-site solar.

Installers, see ranked roofs Businesses, estimate your savings

Frequently asked questions

How many commercial roofs suit solar in Portsmouth?

Sunseam ranks 574 large commercial roofs in Portsmouth, with a combined rooftop-solar potential of about 149.1 MWp.

Which buildings in Portsmouth face MEES pressure?

Around 205 of the ranked buildings in Portsmouth sit at EPC Band D–G. The minimum to let is Band E today; the government's long-term MEES target is EPC B for large non-domestic buildings (over 1,000 m²), expected around 2031, so the biggest, lowest-rated roofs have the clearest future-proofing reason to act.

Figures are estimates modelled using standard assumptions, indicative, not quotes.