Solar Energy in Portland, ME (2026)
1 verified solar energy rules for Portland, Maine, sourced directly from the municipal code and official government pages.
Verified from official government sources
Panel Permits
Portland's Land Use Code allows roof-mounted solar panels citywide without counting them toward maximum structure height, while ground-mounted systems are confined to the B-4, I-L, I-Lb, I-M, I-Mb, I-H, and A-B zones and capped at 20 feet, under § 6.4.38; major systems go through conditional-use review before a building permit issues.
Portland Solar Panel Zoning Standards
Some RestrictionsPortland Code of Ordinances, Ch. 14, § 6.4.38 (Land Use Code, eff. 7/1/2026)
6.4.38 Solar energy systems (major and minor) A. In general 1. All solar energy systems shall meet the technical, safety, and maintenance standards in the City of Portland Technical Manual. ... B. Ground-mounted solar energy systems 1. Ground-mounted solar energy systems are only permitted in the B-4, I-L, I-Lb, I-M, I-Mb, I-H, and A-B zones. ... 6. The absolute height of any ground-mounted sol...