ERAC ERAC Energy Data Analytics & Reporting

Question 1

Which key performance indicator (KPI) measures the ratio of useful energy output to total energy input in a facility?

Accepted Answer

Energy Utilization Index (EUI)

Answer

Energy Performance Index (EPI)

Answer

Energy Conversion Efficiency (ECE)

Answer

Energy Intensity Ratio (EIR)

Question 2

In energy data analytics, what does an M&V (Measurement & Verification) protocol primarily confirm?

Accepted Answer

Actual energy savings achieved from efficiency measures

Answer

Compliance with EPA regulations

Answer

Utility billing accuracy

Answer

Carbon offset credit validity

Question 3

Which regression analysis technique is most commonly used to establish an energy baseline from historical consumption data?

Accepted Answer

Ordinary least squares (OLS) linear regression

Answer

Logistic regression

Answer

Ridge regression

Answer

Polynomial regression of degree 5

Question 4

What is the primary purpose of an energy dashboard in a continuous monitoring system?

Accepted Answer

To provide real-time visualization of energy consumption and anomalies

Answer

To replace utility meters

Answer

To automatically submit regulatory reports

Answer

To calculate depreciation of energy assets

Question 5

When normalizing energy data for weather, which variable is most commonly used for heating energy analysis?

Accepted Answer

Heating Degree Days (HDD)

Answer

Solar irradiance hours

Answer

Relative humidity percentage

Answer

Wind chill index

Question 6

In energy reporting, what does the term 'sub-metering' refer to?

Accepted Answer

Measuring energy consumption at the equipment or system level below the main utility meter

Answer

Installing a secondary utility meter for billing disputes

Answer

Reporting energy use below the regulatory threshold

Answer

Splitting utility costs among multiple tenants