Short answer
To prepare a JV3 Report you need accurate architectural plans, building orientation and site location, climate data, glazing and insulation details, services (lighting, HVAC etc.), occupancy and usage schedules, external shading and heat loads, and realistic material thermal properties.
Full answer
Detailed inputs for a JV3 assessment include architectural drawings such as floor plans, elevations and sections with precise dimensions. Orientation and site information, including latitude, longitude and any nearby shading or buildings that affect solar gain, are also essential. Climate data relevant to the building’s specific NCC climate zone must be incorporated. Building fabric details cover insulation specifications, wall, roof and floor construction, materials and colours. Glazing data like U-values, solar heat gain coefficient (SHGC), orientation and size are critical. Lighting and internal loads include lighting power density, hours of operation and equipment loads. HVAC and services specifications, efficiencies and schedules must be accurately recorded, along with occupancy and usage patterns detailing how many people use the space, when and for what purposes. External environmental influences such as shading, solar exposure and heat loads from adjacent structures are also considered. Where required, thermal comfort standards such as PMV are included. These comprehensive inputs enable accurate simulations for both reference and proposed models; missing or incorrect data can compromise the reliability and outcome of the JV3 assessment.
Why this matters
Accurate inputs are essential for producing reliable modelling results, which helps avoid costly redesigns or non-compliance issues later in the project. When the data used reflects real conditions, it enables meaningful trade-offs among building elements to be identified and optimised. Ultimately, better energy performance and improved occupant comfort can only be achieved when the modelling accurately represents how the building will be used in practice.
How Certified Energy can help
We collaborate closely with your architects and engineers to gather all the necessary data for accurate JV3 modelling. Our team reviews your existing plans early in the process to identify any missing inputs and address them upfront. We incorporate precise climate and site-specific data into our models to ensure accuracy. Additionally, internal quality checks are conducted to verify the consistency of input data and ensure all assumptions are realistic, helping to deliver reliable and compliant results.
Related regulations
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NCC requirements for modelling inputs under Specification JV.
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Relevant state/local building regulations that may require additional details (e.g. local council shading, heritage, environmental overlays).
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Thermal comfort requirements (if applicable).
Helpful resources
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