Darren Xu, M.S., P.E., CEM, CBCP, CEA, GBE, CEO

As the Chief Executive Officer, Darren oversees the day-to-day operation of Bee. He still works as a field engineer on the most challenging projects and leads a research team developing advanced solutions in optimizing energy performance for complex energy systems. 

Darren has 16 years of experience in the field of energy management and optimization involving hospitals, airports, datacenters, offices, chemistry and bio-medical labs, CHP energy plants, thermal distribution systems, and industrial manufacturing plants.

Prior to joining Bee, Darren was employed for 8 years at the Energy Systems Laboratory of the Texas Engineering Experiment Station of Texas A&M University System. He was the Program Manager of the Texas A&M University's comprehensive retro-commissioning (RCx) program, which includes RCx projects on building HVAC systems, thermal distribution loops, and CHP utility plant and satellite plants of its 22 million square foot campus. That program also includes sub-metering and data analysis, M&V (Measurement and Verification), simulation, energy retrofits, master planning, and rate modeling, etc. The TAMU Project is one of the largest energy conservation programs in the United States, and has been referred nationally and internationally as one of the most successful case studies of achieving the most profound impacts through energy efficiency and retro-commissioning. Darren also led a team to optimize the operational energy efficiency at the Dallas/Fort Worth International Airport (DFW)'s Energy Plaza, which includes a 90,000 ton-hour thermal storage tank, and won AEE's National Award - 2010 Energy Project of the Year.

In the early years of his career, Darren was one of the key developers of the Plant Optimization Program (POP) for the University's CHP utilities central plants. POP later became the core of the campus' utilities rate model that allocates source energy and O&M costs to the university's various utility commodities, and assists in operating decisions such as "make, buy, or go-hybrid". His Master's degree research focused on hydraulic modeling of Texas A&M University's miles-long thermal distribution loops.

Darren teaches AEE/DOE’s energy management workshops internationally including Certified Energy Manager (CEM®), Certified Energy Auditor (CEA™), Advanced Retro-commissioning, and Certified Building Commissioning Professional (CBCP®). Darren has contributed as lead author or co-author of numerous key journal and conference papers on building energy efficiency, HVAC system controls and operation optimization, EBCx, district cooling and heating, CHP utilities plant operation optimization, modeling and simulation, and M&V, for WEEC, AEE, ICEBO, IBPSA and other international conferences.

His professional qualifications include:

  • B.S. Mechanical Engineering
  • M.S. Mechanical Engineering
  • Professional Engineer, Texas
  • Certified Energy Manager (CEM®)
  • Certified Building Commissioning Professional (CBCP®)
  • Certified Energy Auditor (CEA)
  • Certified Green Building Engineer (GBE®)

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