What’s news in the
Energy Rating world!
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Embracing the Next Generation of WSUD Reporting: V-Star Energy Transitions to Blue Factor
23 October 2025 | V-Star Energy Change is on the horizon for Water Sensitive Urban Design (WSUD) reporting in Victoria. The well-known STORM tool is now retired, and a new, modernised platform—Blue Factor—is taking its place. Our team at V-Star Energy has already completed the transition to Blue Factor, ensuring a seamless and uninterrupted service for… Read more
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NCC 2025 Delayed Until 2029: What It Means for Your Building Projects
In a significant announcement yesterday, the Australian government confirmed a pause on non-essential changes to the National Construction Code (NCC) 2025 until mid-2029, extending the current NCC 2022 standards for residential buildings. Here’s how this affects your projects and what you need to know. Key Changes Under the Delay What stays the same? The Path… Read more
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Window-to-Wall Ratio
The ideal percentage of glazing to wall—often referred to as the window-to-wall ratio (WWR)—depends on several factors, including the building’s orientation, climate, and intended use. Here’s a general guideline for different orientations: North-Facing Walls: South-Facing Walls: East-Facing Walls: West-Facing Walls: General Considerations: These percentages are starting points and should be adapted based on specific design… Read more
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NCC 2022 State Extensions
In addition to our post on Victoria‘s decision to extend the implementation of NCC 2022 Energy Efficiency provisions to 1 May 2024, other states have also announced date extensions. Here’s the current run down: New South Wales – new homes contracted before 1st October 2023 are exempt from the new sustainable building (BASIX) standards until… Read more
Building Thermal Rating Assessors 