ARCHIVED - Audit Standards Guidelines – The Federal Buildings Initiative
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1. Executive Summary
The intent of this report is to provide some insight and to act as a guideline toward prescribing an energy audit for your facility.
The report summarizes energy audits by levels: namely yardstick, screening, walkthrough and engineering. A description of each is provided along with sample terms of reference for requesting an audit, sample forms and graphs, approximate costs and time to completion. The report also summarizes the auditing requirements for Natural Resources Canada's (NRCan's) Federal Buildings Initiative (FBI), specifically for energy performance contracting. The report may be taken as a guideline document for energy auditing with NRCan's FBI and Energy Innovators programs.
Summary of Audit Levels
| Energy Audit | Level | When to Conduct | Time To Complete (Days) | Time To Complete (Days)Cost |
| Yardstick | Preliminary: Minimum technical data and analysis, energy demand and use profiles, indication of potential. | Basic data gathering to identify buildings which may or may not have energy-saving potential. | 0.5 to 1 |
$250 to $500 |
| Screening | Preliminary: End-use breakdowns, possible energy-saving opportunities, preliminary savings estimates. | Level of audit generally required to prepare Request for Proposal (RFP) for Energy Performance Contracting (EPC). | 1 to 3 |
$500 to $1,500 |
| Walkthrough | Preliminary: System type and equipment information, specific savings opportunities identified, preliminary costs and savings. | Prior to bidding on RFP. Conducted and paid for by prospective Energy Service Company (ESCo). | 3 to 10 |
$1,500 to $5,000 |
| Engineering | Detailed: Extensive data gathered, modelling, simulation; leads to detailed implementation plan with drawings and specifications. | ESCo that wins contract conducts detailed audit to develop implementation plan. | 10 to 50 |
$5,000 to $50,000 |
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