EPI iso 50001 Lead Auditor

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About Energy Professionals International (EPI) ISO 50001 Lead Auditor certification

The ISO 50001– Energy management systems standard has a dual focus on the development of an energy management system (EnMS) and data-driven improvements in energy performance. This dual focus requires a set of skills in the business processes of a management system and the technical requirements of energy performance that are unique in the field of conformity assessment. Since global energy consumption represents the largest contributor to greenhouse gas emissions, effective and robust implementation of ISO 50001 has the potential to be a significant driver in efforts to reduce these emissions.

The Energy Professionals International (EPI) effort addresses the lack of skilled and trained personnel available to review organizations’ EnMS, with a particular focus on the need for knowledge and skills to effectively conduct audits of organizations seeking certification to ISO 50001. Establishing a consensus-based, international certification scheme will support greater consistency in ISO 50001 certification outcomes, thus increasing the impact of ISO 50001 and, more generally, demonstrating the value of EnMS business practices to industrial, commercial, and public sector organizations.

The EPI ISO 50001 Lead Auditor certification offered by IEnMP will enable certified persons to be recognized by EPI participating countries.

The purpose of the Energy Professionals International (EPI) ISO 50001 Lead Auditor credential is to support the creation of an international workforce focused on maximizing the energy savings impact of ISO 50001 implementation in industrial, commercial, and public sector organizations.

This consensus-based, internationally relevant certification scheme for ISO 50001 Lead Auditor builds greater consistency and higher value in ISO 50001 implementations. This credential ensures the qualified candidate is competent in the following ISO 50003 technical areas: buildings, building complexes, and industry – light to medium. Within the context of the audit plan, the ISO 50001 Lead Auditor will be able to:

  • Plan, lead and manage an ISO 50001 audit team effectively to ensure the audit objectives are met;
  • Conduct the ISO 50001 audit in conformance with ISO 50003 requirements;
  • Assess conformance to ISO 50001- Energy management systems standard, which includes confirming continual improvement of energy performance and any additional organizational requirements;
  • Document and report audit findings based upon objective evidence;
  • Effectively manage the relationship with the client and the auditee; and
  • Communicate, justify, and take responsibility for the audit results both verbally and in a written report to the client.


The EPI ISO 50001 Lead Auditor Certification
is ANSI/ISO/IEC 17024 accredited.


A one time application fee of $75.00 is required for processing your experience and compliance to the eligibility requirements.

The exam fee for EPI ISO 50001 Lead Auditor is $495, and is due at registration.

The recertification renewal fee is $150.00.


Minimum Requirements


OptionAcademic CredentialsWork ExperienceAudit Days
1Technical academic degree

3 or more year academic degree from accredited educational institution in one of the following technical fields - energy management, engineering, architecture, science, or math.
48 MonthsMinimum of 15 audit days
2Non-technical academic degree

3 or more year academic degree from accredited educational institution in other disciplines
60 MonthsMinimum of 15 audit days
3Technical vocational degree

Minimum 2 year degree from accredited educational institution in a technical field.
72 MonthsMinimum of 15 audit days
4Other96 MonthsMinimum of 15 audit days

AND – Documentation of 15 audit days within the last 5 years that include the following:

  • Minimum of 5 audit days in the role of a Lead Auditor for an ISO management system standard
  • Minimum of 5 audit days for ISO 50001 Energy Management System Standard

NOTE: Audit days can include audit planning and audit reporting

Experience is documented by an audit log submitted at the time of certification.
An audit log template can be downloaded here.

A candidate will receive the EPI ISO 50001 Lead Auditor certificate only after both

  1. Having passed the examination; and
  2. Having submitted evidence of satisfying the Education, Experience, and Audit Day eligibility requirements.

Management System and Energy Management Experience

  • Management system experience is defined as implementing or auditing an ISO management system standard.
  • Energy management experience is defined as energy efficiency experience in facilities, projects, or programs.



Current Training Courses

Our training partner, GA Tech currently offers training at this time.

View Dates

Exam Information and Preparation

EPI ISO 50001 Lead Auditor Exam Preparation

The exam includes the following topics:

Energy Performance Auditing; EnMS Auditing; MS Auditing; General Auditing; Team Leader Duties for Pre-Audit, Stage 1, Stage 2 Audits; Communications; Energy Fundamentals for Technical Area Knowledge; and General ISO 50001 Audit Knowledge.

The exam can be scheduled to be taken at a conveniently located testing center.

ISO 50001:2011 will be presented as a reference document on a split screen along with the exam.

The following references can be taken to the testing center for use during the exam:

  • ISO 50001:2011 Energy Management Systems – Requirements with Guidance for use
  • ISO 50003:2014 – Energy management systems – Requirements for bodies providing audit and certification of energy management systems
  • ISO 17021:2015 – Conformity assessment – Requirements for bodies providing audit and certification of management systems
  • Scratch paper and pencils

It is suggested that you bring a hand held calculator to use during the exam. You may use any non-programmable scientific, business/financial or graphing calculator.

The following section summarizes the body of knowledge covered on the EPI ISO 50001 Lead Auditor exam:

Performance Topics

  • Evaluate energy performance considerations in long-term planning
  • Confirm energy sources are consistent with the boundaries
  • Confirm that energy baseline is consistent with energy consumption
  • Determine if present and historical energy consumption data has been identified and analyzed
  • Determine whether energy sources have been identified
  • Confirm relevant variables and appropriate static factors have been defined
  • Evaluate EnPIs for appropriateness for measuring energy performance
  • Assure SEUs have been identified based on energy consumption / opportunities
  • Verify valid baseline has been established and recorded
  • Confirm that energy performance improvement opportunities have been identified, prioritized and recorded
  • Confirm energy performance evaluation has been integrated into the design process
  • Confirm that specifications for purchasing of energy have been defined
  • Confirm lifetime energy performance criteria are used for purchasing equipment, products and services
  • Verify competence of personnel associated with significant energy uses
  • Confirm that a measurement plan has been established
  • Ensure that measurement plan addresses all key characteristics
  • Determine that the internal audit evaluates energy performance improvement

Knowledge Topics

  • Common strategic planning process in business
  • Common energy opportunities associated with energy systems.
  • Criteria used to determine significant energy uses
  • Common energy efficiency failures in design and common design solutions
  • Common procurement process in business
  • Energy opportunities and energy efficiency in new equipment purchases
  • Basic lifecycle analysis
  • Common criteria used for purchase of energy where applicable
  • Local energy purchasing options
  • Internal audit process and associated documentation
  • Common skill-based qualifications, e.g. boiler operators, electricians, etc.
Performance Topics

  • Verify scope and boundaries are documented
  • Confirm the energy planning process has been conducted effectively
  • Verify appropriate energy objectives and targets have been established
  • Verify that criteria for effective operation and maintenance of SEUs have been set
  • Confirm energy performance has been considered in procurement selection criteria
  • Verify evidence of operational control and maintenance are effective
  • Verify the energy policy as been implemented at all levels
  • Check evidence for regular energy team meetings
  • Examine suggestion process for contractors and employees
  • Confirm internal communication about energy performance
  • Confirm employees’/contractors’ awareness of the EnMS
  • Confirm that the energy planning documentation meets ISO 50001 requirements
  • Confirm the energy planning process is documented in accordance with ISO 50001
  • Verify that criteria for response to significant deviations have been documented and implemented
  • Verify appointment and authorization for energy team
  • Determine whether energy management action plans have been established
  • Determine whether action plans have been implemented
  • Assure appropriate communication of operational controls to contractors
  • Verify evidence of energy performance improvements

Knowledge Topics

  • How to define scope and boundaries
  • Energy planning and energy review
  • Operational control and maintenance
  • Energy policy requirements
  • Contractor requirements related to energy
  • Energy-related purchasing
  • EnMS documentation requirements
  • Significant deviation and requirements
  • Competence needed for energy team leadership and participation
  • Energy project and EnMS implementation steps
  • Communication methods w/ contractors
Performance Topics

  • Check evidence of roles and responsibilities have been identified
  • Verify that input and output from management review meet EnMS requirements
  • Obtain evidence of management commitment and responsibility
  • Verify appointment and authorization of qualified management representative
  • Verify communication of energy management system within the organization
  • Verify energy policy meets ISO 50001 requirements
  • Determine whether legal and other requirements have been considered in the EnMS
  • Implement audit plan
  • Confirm training needs have been identified and addressed
  • Verify decision has been made on external communication
  • Verify records meet ISO 50001 requirements
  • Verify that management review and actions taken are recorded
  • Verify documentation controls
  • Verify that results from monitoring and measurement have been recorded
  • Determine if compliance with legal and other requirements has been evaluated
  • Confirm that an internal audit process has been documented and implemented
  • Verify that monitoring and measurement provides accurate and repeatable data
  • Verify that internal audit frequency is defined
  • Confirm that actual and potential nonconformities are addressed

Knowledge Topics

  • Interpretation of behavior
  • Interpretation of data
  • Verification techniques and strategies
  • Comparative analysis
  • Communication skills
  • Applicable energy legal requirements
  • Interpretation of legal requirements
  • Assessment of internal organizational learning needs
  • Following Audit Trails
Performance Topics

  • Collect evidence relevant to audit objectives, scope and criteria
  • Verify evidence relevant to audit objectives, scope and criteria
  • Audit preparation
  • Identify audit findings
  • Record audit findings
  • Perform surveillance audit
  • Perform recertification audit
  • Implement audit plan
  • Application of major and minor to nonconformities to certification decisions
  • Use of electronic means to conduct audits

Knowledge Topics

  • Determine and record a non-conformity
  • Identify and evaluate objective evidence
  • Note-taking
  • Report writing
  • Basic presentation skills
  • Interviewing skills
  • Language skills appropriate to all levels within the client organization
  • Audit management skills
  • Certification body’s processes
Performance Topics

  • Develop the audit program
  • Confirm audit time based on effective personnel, energy sources, SEUs, and annual energy consumption
  • Confirm sampling of sites

Knowledge Topics

  • Client business sector
  • Competence required for management representative
  • Client products processes and organizations
  • ISO 50003 duration of EnMS audit calculation
  • ISO 50003 requirements to determine if organization is eligible for multi-site sampling
  • Sampling / statistics
  • Review documentation
  • Evaluate site conditions
  • Collect information on legal requirements
  • Confirm scope and boundaries
  • Review descriptive details of organization’s scope and boundaries
  • Review documented results of the energy planning process
  • Review list of energy performance improvement opportunities
  • Evaluate internal audits and management review to determine readiness for stage 2
  • Obtain sufficient information on EnMS and site operations to plan stage 2 audit
  • Determine if stage 1 needs to be repeated
  • Determine interval between stage 1 and stage 2
  • Determining stage 2 audit objectives, scope and criteria

Knowledge Topics

  • Common structures for management system documentation
  • Security conditions / basic safety requirements
  • Basic business / finance / markets for sectors
  • Energy fundamentals in technical areas
  • Interviewing and communication skills – verbal and written
  • Confirm audit team selection and assignments
  • Manage the audit team
  • Develop audit plan appropriate to the objectives and scope of the audit
  • Validate audit findings
  • Prepare audit conclusions
  • Review effectiveness of corrections and corrective actions
  • Confirm energy performance improvement
  • Determine if greater frequency of surveillance audits is needed
  • Recommend certification decision

Knowledge Topics

  • Audit principals, audit leadership, audit management, audit practice, and audit techniques
  • Corrective action processes
  • Writing findings
  • Management systems standards and principles
  • Report writing
  • Review client’s understanding of ISO 50001 EnMS requirements
  • Resolve conflicts
  • Documents stage 1 conclusions and communicate them to client
  • Review and reach agreement with client on stage 2 allocation of resources
  • Communicate audit plan including roles and responsibilities, to client and audit team
  • Conduct the opening meeting
  • Communicate audit progress to client and team
  • Communicate audit findings to client representative
  • Conduct the closing meeting
  • Prepare written audit report

Knowledge Topics

  • Ability to communicate effectively verbally appropriate at all levels of the organization
  • Listening skills
  • Draft technical reports and taking notes
  • Ask the right questions — interviewing
  • Word processing software
  • Conflict resolution
  • Facilitation
  • Mediation
  • Negotiation
  • Time management
  • Multi-cultural communications
  • Presentation skills
Knowledge Topics

  • Energy vs power
  • Energy unit conversions
  • Energy units of measure
  • Energy balance
  • Energy performance: basic statistics and regression analysis
  • General measurement & verification
  • Common energy systems
  • Energy bill concepts and purchasing
  • Energy management principles
  • Energy baseline
  • Instrumentation and controls
  • Energy codes and standards and regulations
  • Energy sources, uses and relevant and static variables
  • Technical knowledge as defined in ISO 50003 for light to medium industry, buildings and building complexes
  • Alternative energy sources
  • Measurement, monitoring and analysis of energy data
  • Common energy performance improvement actions
  • Common energy performance improvement technologies
  • Client’s products, business processes and organization
Knowledge Topics

  • Audit planning
  • Communication: verbal and written
  • 50001/17021 definitions and requirements for Stage 1 and 2, surveillance, recertification, and audit reports
  • Certification cycle
  • Back office processes of the certification body
  • Knowledge of general business management practices
  • Normative documents
  • General audit principles, practices and techniques
Knowledge Topics

  • Project management
  • Team leadership
  • Audit planning



The IEnMP policy for awarding recertification is to allow certificants three years from the date of certification to meet recertification requirements, which are:

  • Adhering to the IEnMP Standards of Professional Practice.
  • Completing Continuing Professional Development requirements.
  • Paying required fees and verifying contact information; and
  • Remaining current with any changes to normative references that may impact the scheme.

IEnMP Standards of Professional Practice

Regardless of any other professional affiliation, these IEnMP Standards of Professional Practice apply to those individuals applying for certification (Candidates) or certified by IEnMP (Certificants). The IEnMP Standards of Professional Practice establish appropriate and enforceable professional conduct standards and explain the minimal ethical behavior requirements for Candidates and Certificants.

As a Certificant or Candidate, the IEnMP Standards of Professional Practice should guide work with any client. In these Standards of Professional Practice, the term “client” includes any other individual or individuals with whom the Candidate or Certificant interacts.

The IEnMP Standards of Professional Practice are as follows:

  • Conduct my business and/or professional activities with honesty and integrity.
  • Represent my certifications and qualifications honestly and provide only those services for which I am qualified to perform.
  • Strive to maintain and improve my professional knowledge and competence through regular self-assessments and continuing education or training.
  • Act in a manner free of bias and discrimination against clients or customers.
  • Maintain the privacy of individuals and confidentiality of information obtained in the course of my duties unless disclosure is required by legal authority.
  • Follow all certification policies, procedures, guidelines and requirements of IEnMP.
  • Act in accordance with all applicable national and local laws and regulations, which include all applicable business, employment, copyright, and intellectual-property laws.

Continuing Professional Development Requirements

Continuing Professional Development is the ongoing learning process a Certificant employs to advance professional knowledge, skills and abilities. Completion of this process is necessary to maintain the IEnMP credential.

There are two categories of activities needed for recertification; 1) Continuing Education and 2) Continuing Work Experience.

Continuing Education

During the three-year recertification interval, the certification holder must complete a minimum of 10 PDHs. Qualifying topics include: auditing, energy performance, measurement and verification, process improvement, project management, energy systems, integration of ISO 50001 with other Management Systems (MS) standards, auditing of MS standards, teaching a course in any of the topics named here, and items specified by IEnMP. The activity must be started after the certification is attained, and completed before the end of recertification voluntary lapse.

CategoryPDHDocumentation to Obtain
Conferences, Seminars and Workshops includes non-college courses, company sponsored by professional organization or by an independent consultant.

Courses (including webinars)

Webinars or exams scheduled to address changes in standards impacting ISO 50001

Participation in Energy industry promotion activities

Certification – awarded by technical or professional organizations

1 PDH per contact hourDocumentation supporting each activity may be submitted to IEnMP on the CE Template (See Apply for Recertification). Documentation may include (but is not limited to):

Copy of Certificate earned
Name and signature of Training Sponsor
Name and signature of Immediate Supervisor or Manager
Copy of handwritten sign in sheet
Copy of Identification badge
Copy of confirmation email upon completion of formal directed home study course
College Credit Courses10 PDHs per credit hourProof - transcript and statement of which exam content outline topics the course is related to

Continuing Work Experience

During the three-year recertification interval, evidence must be submitted verifying that the Certificant has achieved a minimum of 15 ISO 50001 Audit Days, of which 5 audit days must be in the role of Lead Auditor. Qualifying audit days must be started after the EPI Lead Auditor certification is attained and completed before the end of recertification voluntary lapse. Audit days are documented on an audit log submitted at the time of recertification. An audit log template can be downloaded here.

CategoryAudit DaysDocumentation to Obtain
ISO 50001 audit days with a minimum of 5 audit days as a Lead Auditor. 15An audit log submitted annually or every three years at the time of recertification.


The Recertification renewal fee is $150 paid at recertification. Contact information will be updated when payment is received.

Apply For Recertification