Green Star FAQs


FAQ F-00479
What calculators do I use for Green Star Performance v2?

*** FAQ updated 23/04/2026 to align with the latest calculators available and current status of the Green Star Online Submission Portal ***

Calculators can be accessed by filtering for calculators in the Resources Portal. Users can then upload the completed calculators into the project submission via the Green Star Online Submission Portal.

We currently have the following calculators for Green Star Performance v2: 

Calculator

Credits applicable
  • Energy Use A NABERS Calculator
  • Energy Use - Pathway A: NABERS Energy Rating
  • Other Carbon Emissions
  • Energy use Pathway B Industry Benchmarks Calculator
  • Energy Use - Pathway B: Industry Benchmarks
  • Other Carbon Emissions
  • Waste Reduction Bulk Calculator
  • Waste Reduction - Individual Calculator
  • Waste Reduction
  • Other Carbon Emissions
  • Water Use Pathway A NABERS Water Calculator
  • Water Use - Pathway A: NABERS Water Rating
  • Other Carbon Emissions
  • Water Use B Industry Benchmarks Calculator
  • Water Use - Pathway B: Industry Benchmarks
  • Other Carbon Emissions
  • Other carbon Emissions Bulk Calculator
  • Other Carbon Emissions Calculator - Individual Building
  • Other Carbon Emissions

Note that the Other Carbon Emissions credit is relevant in multiple calculators, as each calculator has an 'Other Carbon Emissions' tab purposed to calculate the emissions associated with the emission source in the credit.

 

There are some calculators for Performance v2 that are still under development. If you have a need for a particular one for your submission, please submit a 'Fix or Modify Calculator Request' to request the calculator. In the meantime, the following can be used in place of a Performance v2 specific calculator:

Calculator

Credit

Green Star Buildings Movement and Place Calculator 

Amenity Diversity - Proximity to Amenities Pathway only

 

For the Sector Pathway - Industrial or Regional Areas, projects cannot use the Green Star Buildings calculator, however may demonstrate 10 amenities across three categories within 800m of the building by providing supporting evidence such as google maps extracts or similar.




Rating Tools

This FAQ is related to the following Rating Tools, Categories or Credits:

  • Green Star Performance v2


Disclaimer

These FAQs are:

  • provided as additional technical assistance for Green Star users.
  • optional and free to use on Green Star projects.

When used on Green Star projects, make sure to:
  • state the FAQ number on the Submission Template.
  • click on "Download" to save the FAQ.
  • include the PDF in the submission.

The GBCA reserves the right to add or remove FAQ at our discretion.




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