Portland Land Use Code

Citation: Portland Land Use Code 5.
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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5. Major ground-mounted solar energy b. In B-4 and industrial zones, flat roof-
systems shall be located at least 75 feet mounted systems are not subject to
from all RN zones, and the B-1 and B-2/B-2b limitations on height, or to a required
zones. setback.
6. The absolute height of any ground- c. In all other zones, solar energy
mounted solar energy system shall be no systems mounted on flat roofs are
more than 20 feet above the ground as limited to a height of 8 feet above the
measured from the base of the support. surface of the roof upon which they
7. The following components of a ground- are mounted, and shall be set back
mounted solar energy system shall be from the edge of the roof one foot for
counted as impervious in the calculation of every one foot of solar energy system
landscaped open space ratio: height.
a. Foundation systems, typically 2. Solar energy systems mounted on pitched
consisting of driven piles, monopoles, roofs shall meet the following standards:
or helical screws with or without small a. Solar energy systems on pitched roofs
concrete collars or weighted ballast. shall be mounted with a maximum
b. All mechanical equipment of the solar distance of one foot between the
energy system, including maximum surface of the roof to the highest
horizontal extents of any concrete pad point of the system.
or any pad mounted structure for b. Solar energy systems on pitched roofs
batteries, switchboard, transformers, shall be installed parallel to the roof
or storage cells. surface on which they are mounted.
c. Paved access roads servicing the solar c. Solar energy systems on pitched roofs
energy system. may not extend higher than the
C. Roof-mounted solar energy systems highest point of the roof surface upon
1. Roof-mounted solar energy systems are which they are mounted.
not included in the calculation of maximum
structure height. 6.4.39 Utility substations
Solar energy systems mounted on flat A. Utility substations shall be as small in size as
roofs shall meet the following standards: practicable, and shall be set back a minimum of
a. In residential zones, solar energy 35 feet from any right-of-way, not including
systems mounted on flat roofs are limited-access roads.
limited to a height of 5 feet above the B. Substations shall be suitably screened and
surface of the roof upon which they landscaped so as to ensure compatibility with
are mounted, and shall be set back the surrounding neighborhood. The remainder
from the edge of the roof one foot for of the lot not occupied by the utility substation
every one foot of solar energy system and its related access shall be designed and
height. designated for future development. CITY OF PORTLAND LAND USE CODE | 6-23 USE STANDARDS

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