Articles - Certified Energy

18 min read

NCC 2025 Changes to JV3 and J1V3 Modelling

By Team CE on Jun 30, 2026 2:56:54 PM

NCC 2025 introduces important changes to J1V3 reference-building modelling for commercial and non-residential projects. These changes affect the performance threshold, envelope comparison, thermal-condition tests, climate data, operating profiles and treatment of on-site solar photovoltaic systems.

An NCC 2022 JV3 model cannot simply be carried forward and relabelled as an NCC 2025 assessment. The applicable code edition, jurisdiction and modelling basis should be confirmed before the model is updated. For a broader explanation of the underlying method, visit the JV3 Knowledge Hub.

Topics: JV3 Commercial Energy Compliance

15 min read

Section J DTS vs JV3: Which Pathway Suits Your Project?

By Team CE on Nov 14, 2024 5:30:00 PM

Choosing between a Section J Deemed-to-Satisfy assessment and JV3 modelling can influence the façade, glazing, insulation, services coordination and approval strategy of a commercial building.

The decision is often described as “Section J versus JV3”. Technically, that is not quite the correct comparison.

Section J establishes energy-efficiency requirements for relevant projects assessed under NCC Volume One. A Deemed-to-Satisfy Solution and a JV3-supported Performance Solution are different ways of demonstrating that the applicable requirements have been addressed.

Should the project follow the applicable Section J Deemed-to-Satisfy provisions, or would a JV3 performance pathway provide a more suitable response?

Topics: Deemed to Satisfy Section J JV3 Commercial

3 min read

How to Manage Rising Building Costs with JV3

By Team CE on Mar 7, 2023 12:57:05 PM

A JV3 Report is an alternative assessment method for non-residential buildings which uses a reference building to compare the overall assumed energy consumption of new buildings with respect to their location and climate. Whereas, alternatively a Section J Report offers a simpler assessment and is more suitable for less complex projects.

Topics: Section J JV3 Commercial

2 min read

What you need to know about the National Construction Code Calculator

By Deniro Stocks on Oct 31, 2019 1:00:00 PM

The National Construction Code (NCC) 2019 has brought in a raft of changes including a facade calculator which will assist in providing compliance for wall and glazing provisions. This will make the process for JV3 reports amongst other certifications to continue to reduce the carbon footprint for future building plans.