Deploying 450 MW in 100 Days: CPS Energy’s Mobile Generation Planning Strategy
In a coordinated effort to bolster Texas grid reliability ahead of peak summer conditions, CPS Energy worked with ERCOT, the PUCT, and CenterPoint Energy to rapidly deploy 15 mobile synchronous generators across the San Antonio region. These units—originally positioned for emergency use in Houston—were relocated, studied, and interconnected at nine substations in under 100 days, providing over 450 MW of temporary capacity.
This session will walk through the planning and technical journey behind this accelerated deployment. Topics will include steady-state analyses for load flow, voltage performance, and fault current impacts, as well as how CPS Energy navigated system constraints like cable ampacity, transformer backfeed limits, and voltage flicker compliance. We’ll discuss how protective device settings were evaluated, what interconnection requirements were enforced, and how system-wide reliability was preserved while adding temporary distributed generation at scale.
The presentation will highlight coordination across planning, protection, operations, and regulatory teams—offering practical lessons for other utilities exploring mobile generation for resiliency, capacity support, or transitional resource strategies.