Eco Certificates

  JV3 modelling is a way to prove a commercial building meets the energy efficiency rules in Section J of the National Construction Code. Instead of checking each building part against a fixed standard, it uses energy software to assess the whole building as one system. This gives designers flexibility that the standard checklist does not allow. A JV3 Assessment is one of two accepted paths to Section J compliance. This guide explains how JV3 works, when to use it, and why it matters. What Is JV3 Modelling? JV3 is a performance-based pathway under Section J. It compares your proposed building against a reference building that already meets the standard rules. Your design passes if it uses no more energy than that reference building. This is the core of JV3 Modeling. Rather than forcing every element to meet a fixed figure, it looks at how the whole building performs together. The modelling is carried out using approved energy simulation software. How Does JV3 Work? The process rel...