ERAC Energy Data Analytics & Reporting Flashcards
6 cards from real ERAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ERAC Energy Data Analytics & Reporting flashcards as text
What is a 'load profile' in energy analytics?
Answer: A graphical representation of energy demand over time
A load profile is a graphical representation of how energy demand varies over time, typically showing hourly or 15-minute consumption data to reveal usage patterns.
Which metric represents the ratio of actual energy consumed to the maximum possible energy consumption over a given period?
Answer: Load Factor
Load Factor is the ratio of average load to peak load over a period, indicating how efficiently a facility uses its electrical capacity relative to its peak demand.
In energy data reporting under ENERGY STAR Portfolio Manager, what is a 'site EUI' versus 'source EUI'?
Answer: Site EUI uses metered data; source EUI adjusts for generation and transmission losses
Site EUI measures energy consumed at the building level, while source EUI accounts for all energy required to deliver that energy including generation, transmission, and distribution losses.
What does 'demand response' data analysis help an energy auditor evaluate?
Answer: A facility's ability to reduce or shift electrical load during peak grid demand periods
Demand response data analysis evaluates a facility's load flexibility and potential to curtail or shift consumption during peak grid events, which can yield significant demand charge savings.
Which approach is used in Option C of the IPMVP to verify energy savings?
Answer: Whole-facility metering with regression-based baseline comparison
IPMVP Option C uses whole-facility metering to compare post-retrofit consumption against a regression-based baseline, making it ideal when multiple measures interact throughout a building.
In energy auditing data collection, what is the primary purpose of a 'data logger'?
Answer: To capture time-series measurements of parameters like temperature, power, or flow at set intervals
A data logger is an electronic device that records time-stamped measurements of physical parameters at preset intervals, enabling auditors to characterize equipment performance without constant manual monitoring.