CEA Data Analysis & Reporting 3

Question 1

An energy analyst discovers that a facility's load factor is 0.45. This means:

Accepted Answer

Average demand is 45% of peak demand over the billing period

Answer

Load factor = Average Demand ÷ Peak Demand; a value of 0.45 means average consumption is 45% of the peak, indicating significant demand variability and opportunity for load leveling.

Question 2

Which data visualization method is best for identifying patterns and anomalies in hourly energy consumption across an entire year?

Accepted Answer

Heat map (calendar or time-of-day matrix)

Answer

Heat maps display hourly energy data across days or months simultaneously, making it easy to visually spot recurring patterns, anomalies, and occupancy-related consumption spikes.

Question 3

In energy reporting, what is the primary purpose of an Energy Performance Indicator (EnPI)?

Accepted Answer

To quantify energy consumption relative to a relevant variable like production or area

Answer

An EnPI normalizes energy consumption against a relevant variable (e.g., BTU/unit produced), enabling meaningful performance tracking independent of changes in output or occupancy.

Question 4

A facility uses 500,000 kWh/year and installs LED lighting expected to save 20%. What is the annual energy savings in kWh?

Accepted Answer

100,000 kWh

Answer

500,000 kWh × 0.20 = 100,000 kWh annual savings; this straightforward percentage calculation is fundamental to energy audit reporting.

Question 5

When performing interval data analysis, 15-minute demand data is primarily used to:

Accepted Answer

Identify demand peaks and opportunities to reduce peak demand charges

Answer

15-minute interval data reveals demand peaks that drive utility demand charges, allowing analysts to identify load-shifting or peak-shaving opportunities that reduce costs.

(CEA) Certified Energy Analyst Practice Test

(CEA) Certified Energy Analyst Practice Test

CEA Data Analysis & Reporting 3