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  • Writer's pictureKelvin Mureithi

JV3 Assessment

Everything You Need to Know About JV3 Energy Reporting

Let's dive into the world of JV3 Verification Method, an essential part of the National Construction Code's (NCC) Energy Efficiency requirements in Australia. These requirements are outlined in Volume 1 of the NCC.

This performance-based pathway, found in Section J of the NCC, offers an alternative to the prescriptive Deemed-to-Satisfy (DTS) approach. Now, we'll explore the key characteristics of JV3 modelling, its pros and cons, and strategies for ensuring compliance success.

NCC 2022 Volume 1 / JV3 Energy Efficiency Report
Catch-up quick: In order to show a project meets the energy efficiency requirements set out in the NCC Volume One, project teams can use one of five pathways, JV3 is one of them.

So, what exactly is a JV3 assessment?

In a nutshell, it's a process that uses detailed computer simulations to model a building's energy use, demonstrating compliance with the NCC's energy efficiency requirements. This approach differs from the traditional DTS method, which sets specific energy values for each building component. JV3, on the other hand, allows for a more holistic evaluation of the building's overall energy performance.

To conduct a JV3 assessment, you'll need a qualified energy efficiency consultant or a qualified building services engineer. These professionals have the expertise to navigate the approved energy modelling software and ensure compliance with the NCC.

The JV3 assessment process involves several key steps:

  1. appointing an assessor,

  2. modelling the envelope and services,

  3. comparing performance to a reference building,

  4. iterating to optimise efficiency,

  5. generating compliance documentation, and

  6. conducting verification before or after practical completion, where applicable.

When should you consider a JV3 assessment for your project?

It's particularly useful for complex designs where meeting DTS proves challenging, or for buildings incorporating innovative energy systems that benefit from performance modelling. Typically, JV3 is used for Class 3-9 buildings over 1,000 square metres.

One of the key advantages of JV3 is its flexibility.

By modelling the building as a whole, designers can identify the most cost-effective energy solutions rather than adhering to restrictive element-by-element compliance. What's more, if you intend to exceed minimum code compliance requirements, the JV3 pathway approach aligns with sustainable and green building practices, enabling the integration of renewables, smart technology, and passive design to optimise energy efficiency. You can do this by exceeding the Performance Requirements set in Section J. It also synergises with green rating tools like Green Star, enhancing potential points for energy minimisation.

However, JV3 assessments do come with some challenges.

They require expertise in approved energy modelling software and can be an iterative process, potentially adding time and costs compared to the standard DTS approach. Additionally, in some cases, verification is necessary to ensure the actual performance matches the modelled predictions e.g. blower door tests.

To wrap up

JV3 Verification Method offers a flexible, performance-based approach to demonstrate compliance with the NCC's energy efficiency requirements. It's applicable to a wide range of buildings, from hotels and schools to offices and shopping centres.

While it requires specialised expertise and may involve additional time and costs, JV3 enables considered design solutions and, in some cases, aligns with sustainable building practices.

If you have an upcoming project or want to learn more about JV3, don't hesitate to reach out. Our team is here to answer your questions and guide you through the process.


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