This a compilation of the overall process in conducting energy audit based on my personal experiences, training that I attended in Malaysia, India and Japan and information sharing between fellow EE practitioners.Not to forget references from books and internet. I believe this would benefit to those who wants to understand what is energy audit all about for beginners to become an energy auditor and to facilities owners to assess the need to conduct energy audit and energy audit proposals submitted by consultants

1. By
ZAINI ABDUL WAHAB
ENERGY AUDIT :
APPROACH & METHODOLOGY (PART 1)
1
ENERGY EFFICIENCY INFORMATION
SHARING SERIES

2. Outline & Content
PART 1
• Introduction to energy audit
PART 2
• Energy Audit Approach
• Steps In Energy Audit Process
PART 3
• Energy Audit Report & Presentation
2

3. PART 1:
Introduction To Energy Audit
3

4. Basic Energy Management Cycle
ENERGY
MANAGEMENT
POLICY
ORGANIZING
PLANNING AND
IMPLEMENTATION
EVALUATION
REVIEW FOR
CONTINUAL
IMPROVEMENT
PLAN
DO
CHECK
ACTION
•Commitment from the top management
•SMART policy
•Setting and sharing common goals•Commitment to
take action
•Organization and
responsibilities
•Energy Manager
•Allocation of
resources
•Management Implementation
plan and time frame
•Energy auditing
•Set baselines for measuring
results
•Designation of responsibilities
•Procedures and standards
•Trainings
•Implement Energy Saving Measures(ESMs)
•Measurement and verification
•Monitoring
•Management Review to confirm
Suitability, Adequacy
& Effectiveness
•Review targets
•Communicate the progress
•Actions to be taken
•Reporting and presenting
4

5. 5
Definition
• A very effective for energy management and improvement
• To define and pursue comprehensive energy management program
in the implementation of Energ Management System
“A systematic approach to obtain the actual
energy supply and energy consumption data
and to identify measures to improve
energy efficiency level”

6. 6
Pre Requirements For Energy Audit
• A commitment from the top management to implement
energy saving measures
 Allocation of resources (auditor, budget)
 Availability of information and data (records)
 Energy audit equipment
 Allocation of time
 Hardware and software for data analysis
• Previous and existing energy saving initiatives
information and results
• Regulatory compliance

7. 7
What To Be Audited?
Energy Management
• Overall energy management system/practice
• Efficiency of the facilities
 Supply and consumption
• Energy loss
Facts Finding On Item To Be Improved
• General management items
• Energy using equipment

8. 8
Types Of Energy Audit
Preliminary/Walk-through Audit
•Walk-through
•Simple measurements
•No/low cost
•Simple financial analysis
Detailed /Investment Grade Energy Audit
•Thorough data and site analysis
•Complete measurements
•More reliable energy saving potential estimation
•ESMs with high capital investment
•Detail financial analysis
•Conceptual design of proposed measure
•Involving financing and contractual documents
HIGHER SAVING
POTENTIALS

9. 9
Preliminary Energy Audit
 A relatively quick exercise to:
Establish energy consumption in the organization
Estimate the scope for saving
Identify the most likely (and the easiest areas for
attention
Identify immediate (especially no-/low-cost)
improvements/ saving measures
Set a 'reference point'
Identify areas for more detailed study/measurement
 Uses existing, or easily obtained data

10. 10
Detailed/Investment Grade Energy Audit
 Provides a detailed energy project implementation plan and evaluates all
major energy using systems
 Offers the most accurate estimate of energy savings and cost
 It considers the interactive effects of all projects, accounts for the energy
use of all major equipment, and includes detailed energy cost saving
calculations and project costs
 One of the key elements is the energy balance
 This is based on an inventory of energy using systems, assumptions of current
operating conditions and calculations of energy use.
 Estimated use is then compared to utility bill charges.
 Can be carried out in three phases
 Phase I - Pre Audit Phase
 Phase II - Audit Phase
 Phase III - Post Audit Phase

11. Types Of Energy Audit : MAESCO
LEVEL I LEVEL II LEVEL III
WALK-THROUGH AUDIT STANDARD INVESTMENT GRADE
 Walk through
familiarization
 Desk top analysis
 Generate Energy
Intensity
 Recommend "no-
cost" ESM
 Written Report with
broad conclusion
 Follow up from Level I audit where
available; a comprehensive audit
 A minimum 7 days logging &
metering on major energy
consuming equipment of building
services or industrial
equipment/systems
 Review system design, installation,
operations and maintenance
 Detailing system energy inputs and
energy use
 Identify sources of inefficiency
 Compute BEI or Specific Energy
Consumption Index
 Generate load apportioning
 Provide Energy Performance
Indicators
 Recommend "no-cost", "medium
cost" and "high cost" ESM
 Written report and presentation
 Inclusive of all scope of works of Level
I & II with the exception where only
EA on specific systems are requested
 A minimum of 7 days logging and
metering on major energy consuming
equipment of Building services or
industrial equipment/systems
 Detailed review of processes
 IAQ audit, if required
 Comfort study, if relevant
 Detailed recommendation on
comprehensive ESMs
 Detailed investment plan using NPV
methodology against life cycle
 Include Indoor Air Quality report to
ensure system is not affected (if
chiller audit)
 Written report and presentation 11

12. 12
Who Can Perform Energy Audit?
Internal Personnel
• Energy Manager with the Energy Management Team
• Employees working in the energy using process/equipment
Advantages
• Minimize time to familiar and understand the plant operational
conditions
• Minimize costs
• Easy access to information and data
• Familiar with energy related issues, processes, equipment and company’s
level of expectations (targets, performance indicators, reporting and etc)
Disadvantages
• Limited allocation of time other than main duties
• Limited expertise and knowledge in specific energy saving methods,
analysis and technologies

13. 13
Who Can Perform Energy Audit?
External parties
• External experts/consultants (if needed)
Advantages
• Can facilitate the Energy Management Team/EMWG
• Energy management team can learn about new knowledge and technologies in
saving energy
• Minimum time to be spent by employees (focus to main duties)
• Timeliness of the completion, reporting, preparation and presentation of
findings in the energy audit report.
Disadvantages
• Generally very costly
• Various level of supervisory and reporting (energy manager-auditor,
management-auditor)
• Difficult to predict the quality of audit ( no local accreditation for energy
auditor)
• Tendency to push for certain products instead of solutions to save energy

14. ACTIVITY#1
14

15. Your understanding on energy
audit
• Please describe basic steps in conducting
energy audit and major output expected
from energy audit based on your
experiences/exposure/knowledge
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15

16. Basic questions to ask before deciding to
conduct energy audit…
1.Am I implementing energy
management in my organization?
2.Do it need energy audit? If yes,
why?
3.Would energy audit improve my
energy management?
4.What type of energy audit that
I may require?
5.What would I expect from
energy audit at my facilities
6.Would I implement findings
from energy audit?
16

17. zainiabdulwahab@yahoo.com
019 2152700
www.goingee.blogspot.com.my
www.facebook/zaini.abdulwahab1 17
THANK YOU!