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Baltimore County, MD Solar Energy: Panel Permits (2026)

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

Key Facts

Capacity threshold
Up to 1 megawatt (AC inverter rating)
Approval required
Special exception
Per-district cap
10 solar facilities
Property-line setback
100 feet
Removal deadline after abandonment
150 days
Landscaping bond
100% of landscaping cost, 5-year hold

Summary

Baltimore County requires a special exception for any ground-mounted solar facility over one megawatt of capacity, caps facilities at ten per councilmanic district, and mandates 100-foot setbacks, landscaping bonds, and removal within 150 days of abandonment. Rooftop and accessory home solar are exempt.

These county ordinances apply to unincorporated areas of Baltimore County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

A solar facility is permitted only by special exception in the R.C. 2, R.C. 3, R.C. 4, R.C. 5, R.C. 6, R.C. 7, R.C. 8, B.L., B.M., M.R., M.L.R., and M.H. Zones of the County. ... No more than ten solar facilities may be located in a councilmanic district. ... A solar facility that has reached the end of its useful life or has been abandoned shall be removed. The owner or operator shall physically remove the installation no more than 150 days after the date of discontinued operations.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 29 | Zoning Regulations: Supplement 10).

Full Breakdown

Article 4F of the Zoning Regulations governs a "solar facility," defined at § 4F-101 as one or more solar collector panels or systems on a tract of land generating photovoltaic power for commercial use, including a solar energy generating station, power plant, or photovoltaic farm. B, the article applies only to a facility with the capacity to produce no more than one megawatt, per Md. Public Utilities Article § 7-218(b). H. Zones. B bars siting within 300 feet of a residential building or another approved solar facility, and on land meeting the USDA's prime farmland definition, and caps the county at ten solar facilities per councilmanic district, tracked by the Director of Permits, Approvals and Inspections.

Section 4F-105 requires a 100-foot boundary from all property lines, non-barbed-wire fencing no taller than 20 feet, a four-season landscaping buffer, and a landscaping bond equal to 100 percent of landscaping cost held for five years, released in stages tied to a 90-percent plant survival threshold. Section 4F-106 requires an applicant to post a security bond before a building permit issues. Section 4F-103 exempts rooftop solar, solar accessory to a residential, agricultural, commercial or institutional use, and government-owned facilities. Section 4F-107 requires removal within 150 days of discontinued operation, with the County authorized to enter and remove an abandoned facility if the owner fails to act.

Violations & Fines

The Code Official may cite a solar facility owner for failing to correct an unsafe condition, for not maintaining the facility under § 4F-106, or for failing to remove it within 150 days of abandonment under § 4F-107; the County may also enter the site and remove the facility itself, and can decline further special exception permits in a councilmanic district once the ten-facility cap is reached.

Frequently Asked Questions

Does a rooftop home solar system need a special exception in Baltimore County?
No. Section 4F-103 exempts rooftop solar facilities and ground-mounted systems accessory to a principal residential or agricultural use from Article 4F's special-exception requirement.
How many large solar facilities can one councilmanic district have?
No more than ten. Section 4F-102.B.2 caps R.C.-zone solar facilities at ten per councilmanic district, and the Director of Permits, Approvals and Inspections must stop issuing new permits there once the cap is hit.
What happens if a solar facility is abandoned?
Section 4F-107 requires the owner to physically remove all solar equipment, structures and transmission lines within 150 days of discontinued operation and notify the County by certified mail; if not removed, the County may enter and remove it.

Sources & Official References

Other rules in Baltimore County

All Baltimore County rules

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