Exam CEM Topic 1 Question 75 Discussion

Actual exam question for AEE's CEM exam
Question #: 75
Topic #: 1
When comparing two similar facilities, you see that the facility with newer, higher-efficiency equipment has a higher energy-use index [EUI] (kJ/m²-yr). What might be the cause?

Suggested Answer: A Vote an answer

1) CEM Principle: Equipment Efficiency # System Performance
The AEE CEM Body of Knowledge stresses that higher-efficiency equipment does not guarantee lower energy use unless systems are:
* Properly commissioned
* Correctly controlled
* Operated as designed
2) Evaluation of Options
* A. The facility with the higher EUI is in need of commissioning #
* Most common cause per CEM case studies: controls, sequences, and integration not optimized.
* B. The facility with the lower EUI is in need of commissioning #
* Lower EUI indicates better performance.
* C. The facility with the lower EUI requires a performance contract #
* No evidence supports this.
* D. The facility with the higher efficiency equipment should have a higher EUI #
* Contradicts energy efficiency principles.
* E. The facility with the higher EUI requires a SCADA system #
* Monitoring alone does not correct poor performance.
CEM Exam Insight
Commissioning ensures that high-efficiency equipment actually delivers expected energy performance.

by Myra at Sep 30, 2026, 07:15 AM

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