After several years of working together, I now consider Andrew to be an integral part of the "team" approach we take to each of our projects.
12+ years providing energy efficiency rating services for architects, designers and building professionals
We’ve developed a reputation as one of Australia’s leading energy efficiency consultants, but we’re not like other energy rating agencies.
Our Powerhaus team of experienced energy efficiency assessors, engineers and scientists combine insight with innovation for better energy rating results and advice tailored to your project.

Australia-wide energy efficiency services
Trusted by organisations like yours







We've created Australia's first energy efficiency home design app.
Optimise your build’s energy rating and visualise design choices instantly with our interactive tool.
Real-time performance feedback at your fingertips. The ‘Powerhaus App’ is revolutionising whole-of-home sustainability.
— Anthony Knobel, Anthony Knobel Architects
The Powerhaus impact

2,500+
Houses rated

$1,400,000
Energy savings for clients

4,456 CO2e
Carbon emissions saved
We believe every home can be comfortable, free from bills and
a solution to climate change.
What our clients say about us
We’ve been waiting for something like this… so we can design something and not be surprised by the rating. We’re just completely blown away by the Powerhaus tool.
-Bruce Townsend, Townsend + Associates
Helping our partners succeed
Ben Walker, Ben Walker Architects
Energy assessments of buildings require a holistic approach, it is not just a case of applying software to numbers and dimensions of rooms etc Andrew has a real passion for his work and is always willing to find desirable outcomes.
Gina Carmody, Carmody by Design
The Powerhaus dashboard is a powerful and easy-to-use tool which lets us behind the curtain of star ratings. For the first time we can tune and test various inputs ourselves to see how best to achieve a high performing home.
Jessica de Rome, de Rome Architects
Recent Articles
Media release: Powerhaus App Debuts at the 2023 Australian Architecture Conference
The Powerhaus app is an Australian first in sustainable home design.NCC 2022 energy efficiency provisions and 7 stars: what it means
Understand how the changes to 7 stars will impact designing and building homes in the cooler states of NSW, ACT and VIC.When to use the NCC 2022 energy-efficiency provisions
There are major changes in energy efficiency requirements with the NCC 2022 – discover where these will apply and what we expect as the deadline for implementation approaches.Airtightness 101: building an airtight home
Understand the importance of airtightness and how it can increase your energy savings and climate resilience when building a new home.We're convinced our process can help
We offer a money-back guarantee on your first preliminary energy efficiency rating. If it’s not the most helpful sustainability platform you’ve used, we’ll refund your money – no questions asked.
To see how we work, jump on a chat with the Powerhaus team.
Just want to get started? Request a quote to get the ball rolling.
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Acknowledgement of country
Powerhaus acknowledges the Traditional Owners of the land where we work and live. We pay our respects to Elders past, present and emerging. We celebrate the stories, culture and traditions of Aboriginal and Torres Strait Islander Elders of all communities who also work and live on this land.