Gregory Stewart

Gregory Stewart serves as Power Plant Shift Supervisor for the Water & Power Department’s Power Supply division in Pasadena, where he plays a critical operational role in ensuring the reliable generation of electric power through fossil fuel-based infrastructure. While not a formal contracting officer, his frontline oversight of gas turbine systems, filtration units, and water treatment technologies positions him as a key technical advisor in the acquisition process. He provides essential operational input for engineering services contracts, helping to define performance specifications, maintenance requirements, and lifecycle support needs that align with the department’s goals of equipment longevity and environmental compliance. Stewart collaborates closely with engineering firms and technical service providers who deliver maintenance, diagnostics, and modernization services for power generation assets. His working relationships are built on technical credibility and long-term operational trust, often involving vendor engagement during equipment failures, retrofit planning, and compliance audits. He does not manage vendor selection directly but influences contract scope through detailed technical evaluations and operational feedback that shape solicitation requirements. His procurement patterns reflect a strict focus on open competition, with no set-aside preferences applied—100% of relevant acquisitions are awarded under general competition. This reflects the agency’s priority on technical capability and operational readiness over socioeconomic criteria, though small businesses are not excluded if they meet stringent performance benchmarks. Stewart’s primary procurement focus lies within NAICS 541330 (Engineering Services), encompassing specialized support for gas turbine maintenance, emissions control system upgrades, and plant-wide instrumentation modernization. He routinely engages contractors with expertise in combustion dynamics, thermal efficiency optimization, and EPA-compliant environmental controls, demonstrating deep domain knowledge in fossil-fuel power plant engineering and regulatory compliance.