Hazelwood Substation - Baltimore, Maryland Electrical Substation

Hazelwood Substation is an operational electrical substation located in Baltimore, Maryland, United States. Owned and operated by Baltimore Gas & Electric, the facility plays a key role in the local electrical infrastructure, stepping down transmission-level voltage for distribution to residential and commercial customers. The substation operates at a voltage of 115 kV, which is typical for sub-transmission or primary distribution in the US grid. As part of the PJM Interconnection, the facility adheres to NERC reliability standards and FERC regulations, ensuring stable and secure power delivery. Baltimore Gas & Electric, a subsidiary of Exelon, serves over 1.3 million electric customers in central Maryland. Hazelwood Substation supports grid stability in the Baltimore metropolitan area, a region with dense urban and industrial load. Its location near major transportation corridors facilitates maintenance and emergency response. The facility contributes to the resilience of the local power system, which is critical for public safety and economic activity.

The substation is situated in an urban environment in Baltimore, where electrical infrastructure must balance reliability with land-use constraints. Urban substations often incorporate compact designs and may use gas-insulated switchgear to minimize footprint. The surrounding area includes residential and commercial zones, requiring careful management of electromagnetic fields and noise. The facility's 115 kV voltage level places it in a medium-voltage category, with typical environmental considerations including oil containment for transformers and vegetation management to prevent outages.