About this method

The Project Impact Assessment with Measurement and Verification (PIAM&V) method is based on internationally recognised measurement and verification principles to calculate energy savings. It allows 'equipment level' energy savings to be deemed for up to ten years, using persistence and confidence factors to discount initial certificate creation. In this method, the term ‘energy’ may refer to electricity, gas, or both.

IPART approves Measurement and Verification Professionals to be used by Accredited Certificate Providers (ACPs) to validate PIAM&V energy models.

Calculating Energy Savings

IPART has published a PIAM&V Method Guide and the PIAM&V Method Requirements.

The Department of Planning, Industry and Environment (DPIE) has developed the Measurement and Verification (M&V) Operational Guide to help translate M&V theory into successful M&V projects. The guide consists of two process guidebooks, seven application-specific guidebooks, and an M&V project planning template.

As part of applying for accreditation, you must nominate the end-user equipment category (EUE) to be included in the accreditation and provide information to demonstrate your ability to implement the method for each EUE category. These documents could include a Measurement and Verification Plan (M&V Plan), Measurement and Verification Report (M&V Report) and spreadsheets/tools used to develop energy models and calculate energy savings.

Once accredited, the calculated energy savings for each implementation will be verified at audit.

You should refer to clause 7A of the Energy Savings Scheme Rule of 2009 (ESS Rule) and the PIAM&V Method Requirements to ensure that you understand how to calculate energy savings using the PIAM&V method.

PIAM&V Method Requirements

We have developed the PIAM&V Method Requirements to increase clarity and certainty for ACPs, auditors and Measurement and Verification Professionals and to address changes in the ESS Rule (clauses 7A.5A and 7A.16) as a result of ESS (Amendment No.1) Rule 2020.

ACPs must comply with the PIAM&V Method Requirements from 30 March 2020 with the exception of requirements relating to clause 7A.5A which are subject to transitional arrangements. Clause 7A.5A relates to the review of Measurement Procedures in relation to Baseline Energy Models by an M&V Professional. Please refer to the PIAM&V Method Requirements and the ESS Rule to ensure that you understand how the transitional arrangements work. A contravention of a PIAM&V Method Requirement by an ACP is a contravention of the Rule.

PIAM&V Method Requirements (No 2)

In June 2021, IPART updated the PIAM&V Method Guide to ensure that guidance on ‘Counted Energy Savings’ was consistent with the ESS Rule. The PIAM&V Method Guide had previously stated that Energy Savings calculated under a different Recognised Energy Saving Activity (RESA) could be excluded from PIAM&V Method calculations as Counted Energy Savings, which was not consistent with the ESS Rule. Counted Energy Savings can only be used to account for ESCs created for the same Implementation, not for ESCs created under another RESA.

Following stakeholder consultation, we have published the PIAM&V Method Requirements (No 2) to address this situation and enable ACPs to account for other Implementations under the ESS Rule within the measurement boundary for a PIAM&V project.

The PIAM&V Method Requirements (No 2) are only intended to address projects that relied upon our guidance prior to its correction in June 2021. They are not proposed as an enduring change to how PIAM&V operates.

The PIAM&V Method Requirements (No 2) are additional to the PIAM&V Method Requirements and are time limited to Implementations on or before 31 December 2021.

For more information on the consultation and our response to the submissions, please see the Submissions Report.

EUE categories under PIAM&V

We have introduced EUE categories for use under the PIAM&V method. These categories are described in the PIAM&V Method Guide and ESS Notice 08/2018.

Combined audit regimes for PIAM&V

For PIAM&V method accreditations that have more than one category of EUE, ACPs may request a volumetric energy savings certificate (ESC) creation and audit limit for particular EUE categories.

To be approved, the ACP must demonstrate an understanding of the PIAM&V method for the relevant EUE category. The remaining EUE categories would retain the requirement for ESCs to be audited prior to registration (i.e. a pre-registration audit regime).

Refer to the Fact Sheet for more information, including how to apply for a combined audit regime.

Guidance for top-up of Energy Savings under PIAM&V

We have provided information to ACPs on an acceptable approach to top-up ESC creation under clause 7A.14 of the ESS Rule. The ESS Notice 02/2019 provides additional information about the acceptable approach to top-up ESC creation.

Relevant Documentation

PIAM&V - Method Guide
Notice 02/2021 – Requirements for PIAM&V – PIAM&V Method Requirements (No 2)
Notice 04/2020 - Requirements for PIAM&V – PIAM&V Method Requirements - V1.0
Notice 02/2019 – Information for PIAM&V – Guidance for top up of Energy Savings under PIAM&V
Notice 08/2018 – Requirements for PIAM&V - End User equipment categories under PIAM&V
Template - Nomination form
PIAM&V - Fact Sheet - Combined audit regimes for PIAM&V