Conducting an energy audit will not only get you started on your energy management program, it will get you significant savings.
An audit is designed to determine where, when, why and how energy is being used. This information can then be used to identify opportunities to improve efficiency, decrease energy costs and reduce greenhouse gas emissions that contribute to climate change. Energy audits can also verify the effectiveness of energy management opportunities (EMOs) after they have been implemented.
To assist your industrial organization in assessing its energy use and identifying energy-savings opportunities, NRCan has developed the Energy Savings Toolbox – An Energy Audit Manual and Tool.
The Energy Savings Toolbox serves as a guide for self-audits and contains Excel spreadsheets, forms, checklists and templates that will help you collect and analyze energy information.
Section A: Energy Auditing Overview
This section of the guide provides an overview of energy auditing and a systematic framework to the steps involved.
It also outlines how to prepare your organization for an audit.
Section B: Energy Analysis Methods
This section provides detailed instructions on how to carry out the 10 steps of the audit process as follows:
1. Conduct a condition survey – Assess the general level of maintenance, housekeeping and operational practices that have a bearing on energy efficiency and flag situations that warrant further assessment as the audit progresses.
2. Establish the audit mandate – Obtain commitment from management and define the expectations and outcomes of the audit.
3. Establish the audit scope – Define the energy-consuming system to be audited.
4. Analyse energy consumption and costs – Collect, organize, summarize and analyse historical energy billings and the tariffs that apply to them.
5. Compare energy performance – Determine energy use indices and compare them internally from one period to another, from one facility to a similar one within your organization, from one system to a similar one, or externally to best practices available within your industry.
6. Profile energy use patterns – Determine the time relationships of energy use, such as the electricity demand profile.
7. Inventory energy use – Prepare a list of all energy-consuming loads in the audit area and measure their consumption and demand characteristics.
8. Identify Energy Management Opportunities (EMOs) – Include operational and technological measures to reduce energy waste.
9. Assess the benefits – Determine potential energy and cost savings, along with any co-benefits.
10. Report for action – Report the audit findings and communicate them as needed for successful implementation.
Section C: Technical Supplement
This section offers background information, including an overview of the basic principles involved in energy analysis and the tools used to conduct an audit. It also provides descriptions of spreadsheet tools and forms that accompany the guide and checklists and templates that will help you collect and analyse energy information.