CEA CEA Measurement & Verification (M&V) Protocols 2 — Questions and Answers
Question 1: What is the purpose of 'baseline adjustments' in M&V analysis?
- To reduce the reported energy savings
- To normalize baseline energy use for changes in conditions such as weather, occupancy, or production levels (Correct answer)
- To adjust the post-retrofit metering period length
- To recalibrate measurement instruments
Correct answer: To normalize baseline energy use for changes in conditions such as weather, occupancy, or production levels
Baseline adjustments normalize historical energy use for changes in conditions (weather, occupancy, production) so that savings reflect the efficiency measure alone.
Question 2: In M&V, what are 'non-routine adjustments' (NRAs)?
- Regularly scheduled meter calibrations
- One-time or infrequent changes to baseline conditions such as building additions or major occupancy changes (Correct answer)
- Monthly corrections for weather normalization
- Adjustments made to equipment after installation
Correct answer: One-time or infrequent changes to baseline conditions such as building additions or major occupancy changes
Non-routine adjustments account for significant, non-repetitive changes (e.g., adding a new wing or changing production levels) that affect the validity of the baseline.
Question 3: A regression model in M&V Option C typically uses which independent variable to predict energy consumption in commercial buildings?
- Equipment age
- Heating and cooling degree days (HDD/CDD) (Correct answer)
- Number of occupants
- Utility rate per kWh
Correct answer: Heating and cooling degree days (HDD/CDD)
Heating and cooling degree days are the most common independent variable in weather-normalized regression models for commercial building energy use.
Question 4: What does 'measurement boundary' define in an M&V plan?
- The geographic boundary of the facility
- The specific systems, meters, and parameters included within the scope of M&V measurement (Correct answer)
- The legal boundary between the ESCO and the client
- The time boundary of the performance contract
Correct answer: The specific systems, meters, and parameters included within the scope of M&V measurement
The measurement boundary defines exactly which equipment, systems, and energy flows are included in the M&V scope, avoiding double-counting or omission.
Question 5: Which IPMVP option uses a calibrated simulation model to determine energy savings?
- Option A
- Option B
- Option C
- Option D (Correct answer)
Correct answer: Option D
Option D uses a calibrated computer simulation model, validated against measured data, to estimate savings when direct measurement of the entire facility or isolated systems isn't practical.
Question 6: What is 'interactive effects' in M&V, and why must they be considered?
- The effect of competing vendors on project cost
- Energy impacts that one efficiency measure has on another system (e.g., lighting upgrades reducing cooling load) (Correct answer)
- Metering interference between multiple sensors
- Contractual disputes between the ESCO and building owner
Correct answer: Energy impacts that one efficiency measure has on another system (e.g., lighting upgrades reducing cooling load)
Interactive effects occur when one efficiency measure affects another system's energy use, such as LED lighting reducing heat gain and therefore cooling energy demand.
CEA CEA Measurement & Verification (M&V) Protocols 2
What is the purpose of 'baseline adjustments' in M&V analysis?