As part of the University of Pennsylvania’s long-term infrastructure modernization, the University identified the need to replace an aging electrical substation that had long served a significant portion of the campus. The existing equipment, installed decades earlier within Harnwell College House, had become increasingly vulnerable to flooding due to its below-grade location and no longer met the reliability and capacity requirements needed to support the university’s growing campus. The university required a new facility capable of reliably supporting more than thirty campus buildings while providing capacity for future growth.

O Z Collaborative developed a comprehensive plan for a new freestanding substation building designed to house the upgraded electrical equipment. The 2,200-square-foot structure provides a secure and serviceable facility that strengthens the campus electrical distribution network. The building’s layout is driven by the functional requirements of the equipment within. All service access points are located along the east side of the building, aligned with a service drive to allow maintenance and equipment access.

Although the building is highly technical in function, its design responds carefully to the surrounding campus environment. Clad in textured brick, the structure is oriented north–south and positioned between a service corridor and a landscaped lawn used by students from nearby residence halls. The west elevation introduces slender vertical recesses that extend through a stone parapet, allowing daylight to enter the building while creating subtle articulation along the façade. At night, these vertical slots of glass emit a soft glow that contrasts with the rough texture of the brick.

 Through a careful balance of technical performance and architectural restraint, the new electrical substation provides critical infrastructure for the University of Pennsylvania while integrating modestly into the campus landscape.