About me:

Sebastian Crangle

I’m a sustainability consultant, specialising in home energy-efficiency and energy management.  I support households to lower the energy consumption and carbon footprint of their homes by implementing practical, customised solutions.


I’m an accredited assessor with the Residential Efficiency Scorecard program, assessing homes and providing comprehensive yet easy-to-understand advice on home improvements to reduce energy demand.


I also provide practical home retrofit services such as draught-proofing, and support households with independent appraisals for installing solar and batteries, and electrifying their homes.

Recent Achievements:


  • Board Director of Zero Emissions Byron (ZEB) (until Jan 2024)
  • National Advisory Group Member, Residential Scorecard Program
  • Scorecard Quality Advisory Panel (3 year contract), Department of Energy, Environment and Climate Change Action (Victorian State Government)
  • Contract with the Office of Energy and Climate Change (Treasury, NSW state government) to deliver energy assessments for the Residential Baseline Project (social housing). 
  • Article published in Renew Magazine:  ‘Energy Saving Rental Makeover’ (October 2022, issue 161).