Frederick County tightens rules for electrical substations, requires berms for large transmission sites

Jan 28, 2026

The Board of Supervisors approved a zoning amendment that splits substations into transmission and distribution types, adds screening and setback standards and requires an 8-foot berm (removing fence/wall options) for transmission-voltage substations after public concern about visibility and long-term impacts.

The full story

Frederick County supervisors on Jan. 28 adopted a revision to the county’s zoning ordinance that separates electrical substations into transmission- and distribution-voltage categories and adds specific performance standards for setbacks, screening and buffers.

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