About Us

Contact Us

Email: gaia@gaia-envirotech.com
Visit: 323 Learmonth Rd, Ballarat, VIC

Gaia EnviroTech is a bioenergy and waste management company based in Regional Victoria. Our focus is on solving two critical challenges that many industries face; the ever increasing cost of managing high volumes of organic waste, and the ability to source on demand renewable energy solutions to run business operations and reduce carbon footprint.

Based in the regional Victorian city of Ballarat, Gaia EnviroTech was born out of a conversation between Gekko Systems Technical Director, Sandy Gray, and a local pig farmer, Jock Charles, who had been running an anaerobic digester on his pig farm for over 20 years treating pig manure.

The conversation revolved around the question of why waste to energy solutions are not more utilised in Australia. Not only will the application of bioenergy help solve the ever growing waste problem, but it will also contribute to reducing carbon emissions.

Utilising Gekko Systems’ 25+ years as a leader in the mining, technology and  services sector (METS) and the company’s extensive engineering and design capability, the Gaia EnviroTech anaerobic biodigester, and rapid composter were invented and successfully commercialised. Gaia EnviroTech continues their strong partnership with Gekko Systems.

Gaia EnviroTech now provides end-to-end waste management and bioenergy solutions that are modular, scalable and designed for the local context.

Our people

Gaia EnviroTech’s motto of ‘smarter together’ provides the platform for building relationships and collaborating with our clients to ensure each solution is tailored to their needs.

Elizabeth Lewis-Gray


Sandy Gray

Technical Director

Michael renehan


Andrew Edmondston

Company Secretary

David Anderson

Sales Manager

Dr. Lachlan Speirs

Microbial Ecologist

Georges Delemontex

Senior Engineer

Clare Halloran

Business Manager

Marleen Gort


Tien Ngo

Technical Sales


Collaboration partners

Download the Biodigester Technology Profile

Modular in design, the Gaia EnviroTech anaerobic biodigester is both highly configurable and efficient. Download the technology profile to learn more.

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Download theComposter Technology Profile

Designed and manufactured in Ballarat, Victoria, the system is easily transportable and quick to install on site. Download the technology profile to learn more.

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Downloadthe Diary Effluent Case study

The system in this case study was installed in November 2018 as a 12-month research and development project to establish viability of an anaerobic digestion plant designed to convert dairy effluent to energy and minimise odour. 

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Download the Capability Profile

The Capability Profile contains information on:

- Business Overview

- Solutions

- Installations

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Download the Case Study: Modular AD pilot validated at a commerical cheese factory

This case study displays to results of an AD trial on both whey and permeate at a semi-commercial level in an Australian setting.

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Download the Rapid Composter Case Study: Turning FOGO waste into compost

This case study displays to results of the composters installed at Ararat Rural City Council.

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