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Troy, MI Solar Energy: Panel Permits (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing section
Zoning Ordinance § 12.05
By-right status
all zoning districts, admin approval
Height cap
40 feet for freestanding active solar
Roof-mounted panels
excluded from height calculation
Yard placement
front/side yard triggers site plan review
Easements
recorded with Troy Building Department

Summary

Troy allows active and passive solar energy devices in every zoning district by right, needing only administrative approval under Zoning Ordinance Section 12.05. Roof-mounted panels don't count toward the building's height limit, but freestanding active solar structures are capped at 40 feet, and units placed in front or side yards trigger full site plan review.

A. Permitted. Active and passive solar energy devices, systems or structures shall be permitted in all zoning classifications by right, subject to administrative approval, except when such solar devices or architectural features project into required front or side yards, or are free-standing elements in a required front or side yard, in which case they are subject to site plan review in accordance with Article 8. B. Maximum Height of Structures. Passive solar energy structures, such as flat plate collectors, photovoltaic cells, etc., which are roof-mounted or integrated otherwise into the roof structure shall not be included in the calculation of maximum height. Active solar energy structures, when mounted on either freestanding structural elements or integrated architecturally with a principal or accessory building shall not exceed a height of forty (40) feet.

Full Breakdown

05 of the Zoning Ordinance, effective July 23, 2026, treats solar energy devices as a by-right use citywide: active and passive systems are permitted in every zoning classification and normally need only administrative approval from the Building Department rather than a public hearing. That by-right status has two carve-outs. First, if a solar device or architectural feature projects into a required front or side yard, or stands as a free-standing element within one, the installation is bumped up to full site plan review under Article 8, the same process used for larger commercial projects.

Second, height is treated differently by mounting type: passive systems integrated into or mounted flush with the roof, such as flat plate collectors and photovoltaic cells, are excluded entirely from the building's maximum height calculation, while active solar structures on freestanding supports or architecturally integrated with a building are capped at forty (40) feet. C lets a landowner record an easement, covenant or other deed restriction describing a three-dimensional 'solar skyspace' that forbids or limits neighboring activities, land uses, structures or trees that would block sunlight to a solar structure, and any such Solar Access Easement must be recorded and a copy kept on file with the Troy Building Department.

Violations & Fines

Installing a freestanding or yard-encroaching solar structure without the required site plan review, or building an active solar structure taller than 40 feet, is a Municipal Civil Infraction under Zoning Ordinance Section 3.08 and Chapter 100 of Troy's Code of Ordinances. An unpermitted installation left in place is also a public nuisance per se that the City may have abated by court order.

Frequently Asked Questions

Does installing solar panels on my Troy home require a public hearing?
No. Section 12.05.A permits active and passive solar devices by right in every zoning district and only requires administrative approval, not a hearing before the Planning Commission, unless the panels or supporting structure encroach into a required front or side yard.
How tall can a freestanding solar array be in Troy?
Active solar structures mounted on freestanding supports or attached to a building may not exceed forty (40) feet under Section 12.05.B. Roof-integrated passive collectors like flat plate panels and photovoltaic cells are not counted in the building's overall height at all.
Can a Troy homeowner protect sunlight access to their solar panels?
Yes. Section 12.05.C allows a property owner to record a Solar Access Easement describing a three-dimensional solar skyspace and restricting neighboring trees, structures or land uses that would block it; the easement must be recorded and filed with the Troy Building Department.

Sources & Official References

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