IGA explained

During an Investment Grade Audit, energy auditors conduct an in-depth analysis of the building's energy usage patterns, systems, and components. This includes examining the efficiency of HVAC systems, lighting, insulation, windows, and other relevant factors. The auditors collect extensive data on energy consumption, perform engineering calculations, and may use advanced computer modeling to simulate energy savings and project financial returns.

What is involved?

- Whole site, process, system or fleet.

- Comprehensive energy audit with significant input from the organization.

- Generally only cost effective for organizations with high energy spends or institutions with targeted capital-investment grants.

- Also applicable at the system level (e.g. compressed air)

- Identification and evaluation of a range of coherent and specific energy performance improvement opportunities with identified costs and benefits, including quantification of “non-energy” gains.

- Analyse detailed energy and process data to identify and evaluate opportunities.

- More detailed investigation of opportunities.

- Consideration of business strategies in the audit


What is involved?


- Detailed understanding of energy consumption and use.

- Identification and analysis of energy saving opportunities, including no cost, low-cost and capital investment measures to include energy and non-energy benefits,

- preliminary equipment design or process improvement and detailed cost requirements.

- Data for energy review purposes.

- Examination of metering systems and recommendations to address data gaps.


Get in touch to find out more about a Level 3 Energy Audit

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Safe Contractor
Construction Online Gold Member
Energy Institute Company Member