Practice Test Geeks(CEA) Certified Energy Analyst Practice Test
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Data Analysis & Reporting Flashcards

7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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

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

    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.

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

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

    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.

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

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

    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.

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

    Answer: 100,000 kWh

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

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

    Answer: Identify demand peaks and opportunities to reduce peak demand charges

    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.

  6. What is the purpose of a cumulative sum (CUSUM) chart in energy monitoring?

    Answer: To detect sustained shifts in energy performance relative to a baseline model

    CUSUM charts accumulate deviations from a baseline model over time, making sustained performance changes—either improvements or degradations—clearly visible even when individual deviations are small.

  7. Which factor should an energy analyst adjust for when comparing a school's energy consumption between a school year and summer break?

    Answer: Occupancy hours and operational schedule

    Occupancy hours and operational schedule dramatically affect school energy use; comparing periods without this adjustment produces misleading conclusions about efficiency performance.