June, 16 | 9:30 AM - 10:00 AM

Track 2B | Solving the Problem of Quantifying Efficiency

John Avina

Abraxas Energy Consulting | President

Presentation Title:

Why do we calculate uncertainty


Measurement and verification have become more complicated in recent years to address the concerns of utility energy efficiency practitioners. Their concerns, outlook and background are different than those of performance contractors. Many of the concepts that are applicable to the utility energy efficiency practitioners are not useful to performance contractors. One example is uncertainty calculations which are not necessary for a performance contract. This paper critiques the latent and overlooked inconsistencies associated with uncertainty calculations.


John Avina, CEM, CEA, CMVP, CxA, has worked in energy analysis and utility bill tracking for over 25 years. During his tenure at Thermal Energy Applications Research Center, Johnson Controls, SRC Systems, Silicon Energy and Abraxas Energy Consulting, Mr. Avina has managed the measurement and verification (M&V) for a large performance contractor, managed software development for energy analysis and M&V applications, created M&V software that is used by hundreds of energy professionals, taught over 250 energy management classes, created hundreds of building models and utility bill tracking databases, modeled hundreds of utility rates, and has personally performed energy audits and RCx on over 25 million square feet. He currently chairs the Certified Energy Auditor Exam Committee for the Association of Energy Engineers, has a MS in Mechanical Engineering from the University of Wisconsin-Madison and may be contacted via email at

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