Energy Audit

The Energy Audit is a fundamental part of the Energy Management Program of an Entity that wishes to be efficient and competitive, by allowing it to identify where and how energy carriers are consumed and the factors that determine their consumption and savings.



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  • 1 Objectives of an Energy Audit
  • 2 Object activities
    • 1 Organization
    • 2 Energy supplies
    • 3 Physical fuel
    • 4 Production and / or service processes
    • 5 Metrology
    • 6 Energy accounting
    • 7 Improvement program
  • 3 Report
  • 4 See also
  • 5 Source

Objectives of an Energy Audit

  1. Know exactly the energy consumption.
  2. Check the use (where and how) of the energy carriers.
  3. Analyze contracting, storage, consumption and energy control activities.
  4. Detect and evaluate opportunities for saving and improving Energy Efficiency.
  5. Analyze the possibility of using renewable energy.
  6. Check that the established regulations, procedures, specifications, standards and other applicable documents are adequate and are effectively complied with.
  7. Detect damages to the environment through storage, transportation or energy consumption.

Object activities

Depending on the scope and objective of the energy audit, the following activities or processes should be audited:


  1. Existence of an Organizational Unit or a person in charge of the Entity’s energy activity
  2. Existence of documentation that describes the responsibilities of the different positions for compliance with the provisions of the Entity’s energy policy, taking into account that each task must have a person in charge.
  3. Verify that the functions assigned will be of such a nature that the achievement of the Energy Efficiency objectives is the responsibility of those persons who have been entrusted with the task, and the verification of conformity with the established requirements will be carried out by people who do not have direct responsibility for carrying out said activity.
  4. Verify the creation and operation of the Energy Efficiency Council.

Energy supplies

  1. Contracting documents for Electric power, transformer bank, consumption trend, payment of electric service, use of emergency generators (generator sets), inventory of the power of consuming equipment, etc.
  2. Type of fuel supply :, contracting, transportation and storage, planning and control of consumption. inventory of consumption rates of consuming equipment, etc.
  3. Type of facilities, production and its tendency, self-consumption and surpluses of the Self-production of energy.
  4. Contracting, consumption trend, cost of secondary energy sources (steam, hot gases, hot and chilled water), alternatives with other renewable energy sources.

Physical fuel

  1. Existence in the place of storage of documentary evidence of the initial fuel inventories, entries and exits carried out.
  2. Existence of documentary evidence of daily measurements of fuel levels and their correct performance.
  3. Existence in the entity’s storage location of the necessary conditions to carry out the fuel balance
  4. Verify if the delivery of the fuel by the supplier is made through an invoice, drive, or transfer.

Production processes and / or services

  1. Analysis of the Consumption Structure of the audited Entity or Organizational Unit.
  2. Study of production and / or service processes and their energy needs.
  3. Analysis of the levels of use of the productive capacity of the equipment and facilities.
  4. identification of the activities, production lines, organizational units and / or equipment with the greatest influence on energy expenditure and measures taken.
  5. Identification of the most influential workers in achieving energy efficiency and their care and preparation plan
  6. Analysis of the energy efficiency indicators of the audited entity or organizational unit.
  7. Analyze the consumption control records of the equipment, systems and / or process.
  8. Study of the maintenance and conservation system for equipment and systems and their compliance.
  9. Detect damages to the environment through storage, transportation or energy consumption.
  10. Analysis of the technical status and use of energy equipment and installations:
  • Furnaces and Boilers: Conservation, combustion and use of residual heats
  • Thermal networks of water, steam or gas: insulation, leaks, etc.
  • Electrical system: connections, transformers, internal distribution networks, power factor, load accommodation.
  • Air conditioning: heating, cooling air quality.
  • Lighting system: Use of natural and artificial light, sectorization.
  • Compressed air and distribution network.
  • Electric motors: Starting, correspondence of power with loads.
  • Cargo and administrative transport


  1. Official technical certification of the instruments for measuring and controlling the quantities with influence on energy costs (temperature, pressure, meter, voltage, etc.)
  2. Existence of documentary evidence of the official certification of the capacity of storage tanks, trucks and tank cars used in the transportation of fuels.

Energy accounting

  1. Control of the documents that guarantee the volumes, inputs, outputs, balance and date of each fuel movement.
  2. Control of energy prices and expenses
  3. Planning of energy allocations to each activity, production line, organizational unit and equipment in accordance with their consumption rates.
  4. Control of historical consumption differentiated by each installation.
  5. Analysis and control of energy intensity

Improvement program

  1. Existence of documentary evidence of a program of improvementsin energy efficiency and its compliance.
  2. Existence of documentary evidence of the quantification of savings in electricity, fuels and lubricants.


At the end of the Energy Audit, a report is prepared with the proposed improvements detected during the course of the energy study. These improvements should be aimed at achieving the following objectives:

  1. Reduction of energy consumption and associated costs.
  2. Increased efficiency in equipment, processes or services.
  3. Increased use of renewable energy sources
  4. Estimation of the amortization period of the investments of the proposed improvements


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