Commission approves GM Global Tech Center amendment to add DC fast-charger hub

The Planning Commission approved a minor amendment and the site plan for a DC fast-charging hub, containerized substation and outdoor patio at the General Motors Global Tech Center.

Jason Harris, senior design manager at General Motors, said the project responds to increased electric-vehicle adoption among employees and visitors and would provide workplace fast charging. He said the project includes reconfiguring the north end of an existing parking lot to accommodate a fast-charging hub with approximately 20 parking spaces and a containerized electrical substation to handle required power.

An electrical-engineering statement read into the record described a containerized substation with approximately "2,500/3,333 kVA" capacity feeding switchboards and 10 dual-port 320-kilowatt Level 3 DC fast chargers (20 ports total), plus supporting 120/208-volt loads for telecom, security and HVAC. Harris and SmithGroup staff said the chargers include local disconnect switches, breakers and other safety features and that a fire hydrant will be relocated as part of site work.

Planning staff recommended approval with detailed submittal requirements including revised site plans, photometric updates, shielding of lighting, elimination of upward-directed lighting and a performance bond of $36,000 based on an estimated $1.2 million project cost. Commissioners debated lighting height: city standards specify a maximum 20-foot pole, while GM's campus standard is 30 feet; GM asked the commission to allow 30-foot fixtures for campus uniformity while promising shielding and anti-glare measures.

Commissioners also asked about ADA-accessible stalls; petitioner confirmed at least one van-accessible stall and said stalls were intentionally wider for larger vehicles. Harris said charger utilization projections were not yet available and that chargers are configured to split load when two vehicles are connected to a dual-port unit.

Commissioner Ansar moved to approve the petition after recognizing the minor amendment; roll-call votes recorded 'yes' votes from commissioners present and the motion carried.

Next steps: petitioner must submit revised overall and enlarged site plans meeting the planning conditions, post the performance bond, and coordinate any required utility or hydrant relocations prior to permit issuance.