Energy Audit Resources

• The basic starting point for building energy optimization
• Involves interviews with select facility staff
• A review of utility bills or other operating data
• A walkthrough of the facility
• The goal is to identify glaring areas of energy inefficiency.
• The data is compiled and used to complete a preliminary report detailing low-cost/no-cost measures and potential capital improvements for further study in subsequent audits.

This level of detail is adequate for prioritizing energy efficiency projects and to assess whether a more detailed audit is necessary.

This includes the ASHRAE Level 1 analysis, and adds:

• Detailed energy calculations and financial analysis of proposed energy efficiency measures.
• Energy consumption is broken out by end-use, identifying areas that present the greatest efficiency opportunities.
• Utility rates are analyzed to determine if there are rate change opportunities.
• Key building representatives are interviewed for insights into building operational characteristics, potential problem areas, and to define financial and non-financial goals of the audit.

This level of detail is adequate to justify project implementation.

• Engineering analysis of the potential capital-intensive projects identified in the ASHRAE Level 2 Analysis.
• More detailed field data gathering and more rigorous analysis.
• Existing utility data is supplemented with sub-metering of major energy-consuming systems and monitoring of those system’s operating characteristics.

This level of detail is typically reserved for complex commercial and industrial buildings.