expertise in action

Energy Efficiency - Energy Audits

HRL assists clients in identifying, assessing and implementing energy efficiency improvements which are also often greenhouse abatement projects.

HRL offers specialist engineering solutions, including formal energy auditing in accordance with AS/NZS 3598.3:2014, Energy Audits - Industrial and related activities, to energy intensive industrial facilities with significant steam, process heating and electricity demands and costs.


The commercial viability of many Australian manufacturing businesses is being impacted by rapidly escalating costs of natural gas, electricity, coal and other fuels.  Action is needed to maintain sustainable margins and profitability.


HRL offers specialist engineering solutions to assist clients in reducing energy costs by identifying areas where energy can be saved or used more efficiently, investigating the feasibility of energy saving opportunities, and implementing energy savings actions.

Energy Efficiency Audits

HRL specialises in conducting energy audits for energy intensive industrial facilities and manufacturing sites.  HRL has conducted formal energy audits according to AS/NZS 3598.2:2014, Energy audits - Industrial and related activities, for a range of large manufacturing plants. 

Examples include:

  • cement production
  • dairy milk processing and ice-cream production
  • brewery
  • brick production
  • integrated starch and gluten facility
  • ethanol refinery.

Energy audits are performed to benchmark energy use (including breakdown of site energy use and benchmarking against industry practices) and to identify and evaluate energy saving opportunities based on key criteria such as implementation costs, energy and greenhouse reductions and payback period.  The outcomes of the audit allow organisations to better understand their energy use and costs and to prioritise energy savings opportunities.

Focus areas for audits typically include:

  • steam and hot water boilers
  • internal steam and hot water distribution
  • thermal equipment including dryers, evaporators, etc
  • direct gas fired equipment
  • co and tri generation, e.g. turbines, hot water
  • energy substitution / fuel switching
  • solar implementation
  • process optimisation
  • refrigeration systems
  • compressed air systems
  • fans and pumps
  • motors and drives
  • lighting.

Technical Support

HRL provides a complete offering from energy auditing, process modelling and design, through to turn-key implementation or 'owners engineer' support.  HRL closes the gap between the identification of energy savings opportunities and the actual implementation of the opportunities.

Key differentiators for HRL are an in-house analytical laboratory, bench and pilot-scale process development capability, advanced desktop modelling tools, plant performance testing capability and the ability to project manage the implementation of solutions.

Recent projects have delivered successful results in the following areas:

  • waste heat recovery, co-generation, equipment modification and optimisation
  • combustion/boiler optimisation standalone projects, retainer-based services
  • fuel switching e.g. biomass, waste, gas, coal briquettes
  • asset reliability/integrity improvements
  • voltage optimization and power factor correction implementation
  • digital on-line plant monitoring systems to enable plant performance optimisation and increase plant efficiency
  • fuel or waste recovery e.g. briquetting, agglomeration
  • securing government incentives and rebates.

Securing Rebates and Funding

HRL has assisted with securing funding for clients under programs such as:

  • Victorian Energy Upgrades
  • South Australian Energy Productivity Program (SAEPP)
  • NSW Energy Efficient Business Program (EEB)
  • Emissions Reduction Fund (ERF)
  • Renewable Energy Target (RET) and Renewable Energy Certificates (REC)
  • NSW Energy Savings Scheme (ESS)
  • NSW Major resource recovery infrastructure grants program.


The benefits of engaging HRL to assist in optimising energy efficiency may include:

  • reduced energy consumption and operating costs
  • increased efficiency of production
  • access to government funds
  • identification of baseline energy use and projects that may be suitable for other financial assistance (e.g. Emissions Reduction Fund)
  • generation of additional revenue streams such as tradeable state based "Energy Savings Certificates"
  • increased value and/or use of waste products
  • improved business planning
  • improved corporate image.

Meet the expert


Sam has over 14 years of experience in energy efficiency, fuel switching and the implementation of cost saving options from the findings of energy efficient audits on large industrial plants. Sam has extensive experience in evaluation of upgrading and utilisation options for gas, biomass and other fuels. His experience includes material/fuel characterization, practical research and demonstration, techno-economic assessments, and detailed feasibility studies.

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What Our Clients Say

"Specialised skills and industry knowledge. Excellent services available at your doorstep."

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Our Certifications


NATA accredited AtS/NZS ISO 17025, AS/NZS ISO 17020NATA Accredited Laboratories number 561

ISO 9001 Quality Management

ISO 9001 Quality Management certified by BSI under certificate number FS605116.