Certified Energy Auditor Audit Strategy and Planning Questions and Answers — Questions and Answers
Question 1: An energy auditor is hired by a facility manager whose only instruction is to "find ways to reduce our high energy costs." What is the most critical first step the auditor must take to develop an effective audit strategy?
- Immediately request and analyze the last 36 months of utility billing data.
- Schedule a comprehensive, multi-day site walk-through to inspect all equipment.
- Work with the facility manager to formally define the specific audit scope, objectives, and boundaries. (Correct answer)
- Install data loggers on the main electrical service and other large energy-consuming systems.
Correct answer: Work with the facility manager to formally define the specific audit scope, objectives, and boundaries.
Before any detailed analysis or on-site work can begin, the auditor and client must agree on the audit's scope and objectives. This ensures both parties have the same expectations regarding the audit's depth (e.g., ASHRAE Level 1, 2, or 3), physical boundaries (e.g., specific buildings or processes), and goals (e.g., cost reduction, carbon footprint reduction, etc.). This step guides all subsequent activities, including data requests and site visit planning. [14]
Question 2: Which of the following activities is a key differentiator of an ASHRAE Level 2 energy audit compared to a Level 1 audit?
- A walk-through of the facility to identify low-cost/no-cost improvement opportunities.
- A detailed breakdown of energy use by specific end-use systems (e.g., lighting, HVAC, process loads). (Correct answer)
- A review of historical utility bills to understand consumption patterns.
- Benchmarking the facility's Energy Use Intensity (EUI) against similar buildings.
Correct answer: A detailed breakdown of energy use by specific end-use systems (e.g., lighting, HVAC, process loads).
While a Level 1 audit includes a walk-through, utility bill review, and benchmarking, a Level 2 audit goes deeper. [21, 13] Its defining characteristic is a more detailed analysis to provide a breakdown of energy consumption by end-use, allowing for more accurate calculations of savings for specific Energy Conservation Measures (ECMs). [17] A Level 3 audit would take this even further with dynamic simulation modeling. [21]
Question 3: During the Preliminary Energy-Use Analysis (PEA) phase of an audit, what is the primary goal for the auditor?
- To calculate the precise simple payback period for all potential retrofit projects.
- To perform combustion efficiency testing on all boilers and furnaces.
- To benchmark the facility's performance and identify the largest energy-consuming systems to focus the audit. (Correct answer)
- To create a detailed energy simulation model of the entire building.
Correct answer: To benchmark the facility's performance and identify the largest energy-consuming systems to focus the audit.
The Preliminary Energy-Use Analysis (PEA) involves analyzing high-level data, like utility bills and building size, to calculate the Energy Use Intensity (EUI) and benchmark it against similar facilities. [2, 4, 5] This initial step helps the auditor identify if the building is a high consumer and points towards the major areas of energy use (e.g., electricity for cooling, natural gas for heating), thereby focusing the subsequent, more detailed investigation. [8]
Question 4: An energy auditor is preparing for an on-site visit to a large, complex manufacturing plant. To ensure the visit is as efficient and productive as possible, which set of documents is most critical to obtain and review beforehand?
- The company's annual financial statements and marketing materials.
- The maintenance department's staff vacation schedule.
- Architectural drawings, major equipment lists with specifications, and production schedules. (Correct answer)
- The facility's property tax and insurance records.
Correct answer: Architectural drawings, major equipment lists with specifications, and production schedules.
Reviewing building plans, equipment lists, and operating/production schedules before the visit is crucial for effective planning. [10, 14] This information allows the auditor to understand the facility's layout, identify key energy-consuming systems, and plan the on-site data collection and measurement strategy to align with the plant's operational patterns, maximizing the effectiveness of the time spent on-site.
Question 5: Which of the following best describes the primary purpose of creating a formal energy audit plan before beginning the main fieldwork?
- To serve as the final, binding contract for the project.
- To guarantee a minimum percentage of energy savings for the client.
- To provide a structured roadmap detailing the audit's scope, timeline, tasks, and required resources. (Correct answer)
- To replace the need for interviews with facility staff.
Correct answer: To provide a structured roadmap detailing the audit's scope, timeline, tasks, and required resources.
The audit plan is a project management tool. It outlines the agreed-upon scope, objectives, timeline, team responsibilities, data requirements, and specific tasks to be performed. [24] This ensures the audit is conducted efficiently, thoroughly, and in alignment with the client's expectations, serving as a clear guide for the entire audit team. [25]
Question 6: An auditor is planning an ASHRAE Level 2 audit for a 20-story office building with multiple tenants. When defining the audit scope, which of the following is the most important 'boundary condition' to clarify with the building owner?
- The manufacturer of the main chiller plant.
- Whether the audit is limited to base building systems or also includes tenant-controlled spaces and plug loads. (Correct answer)
- The location of the nearest electrical substation.
- The age of the building's roof membrane.
Correct answer: Whether the audit is limited to base building systems or also includes tenant-controlled spaces and plug loads.
Defining the physical and operational boundaries of the audit is a critical part of scoping. In a multi-tenant building, a key distinction is between the base building systems (HVAC, central lighting) controlled by the owner and the spaces/equipment controlled by tenants (plug loads, tenant-specific lighting, supplemental HVAC). [14] Clarifying this boundary determines what can be measured and what recommendations are feasible for the client to implement.
Certified Energy Auditor Audit Strategy and Planning Questions and Answers
An energy auditor is hired by a facility manager whose only instruction is to "find ways to reduce our high energy costs." What is the most critical first step the auditor must take to develop an effective audit strategy?
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