gTET

What gTET does

gTET (Green Thermal Energy Technologies Pty Ltd) is an Australian private proprietary limited company founded in 2010 and headquartered in Rowville, Victoria. The company designs and delivers waste-to-energy and waste-heat-recovery hardware systems built around its proprietary Organic Rankine Cycle (ORC) generator technology. Core technology comprises a closed-loop thermodynamic cycle using organic fluid selected to develop sufficient pressure to efficiently operate a turbine at the source temperature, with high-speed turbo-alternators operating at 45,000rpm, gas foil bearing technology, and a hermetically sealed turbine-alternator integration. The High Speed Electronic Drive is AS4777 and IEC62109 certified for grid connection, supporting a 90% system turn-down to handle fluctuating heat sources.

The company operates across three business streams: Solid W2E (converting combustible solid fuels including sawdust, construction waste, green waste, medical waste, and household waste into power); Heat W2E (recovering waste heat from furnace exhaust, geothermal, solar thermal, and engine exhaust into power via suitable transfer fluids); and Heat W2H (transferring waste heat to facility processes, mine heating, chillers, and drying systems, including high-temperature heat pumps up to 120°C). Power output units range from 60kW (Low Temp configuration) to 400kW+ per generator, with a 22MWth heat exchange system demonstrated at scale (Oyu Tolgoi Mine, Mongolia).

gTET operates a direct sales-led go-to-market targeting industrial facilities with custom-engineered solutions. Customers include Australian Tartaric Products, Auswest Timbers, Jeffries Group, Veolia Australia, Sokcho Municipal Waste (South Korea), Capstone Gas Turbine, Koppers Minerals, Winton Geothermal, Heywood Stock Feeds, Howden Australia, and Oyu Tolgoi Mine (Mongolia). The customer base spans food processing, timber, waste management, mining, geothermal, and municipal sectors across Australia, South Korea, and Mongolia. Revenue mechanics rely on hardware sales of custom-engineered systems; pricing is not publicly disclosed. The company is privately held, has 1-10 employees, and has not disclosed any external funding rounds.

Name

gTET

Legal name

Green Thermal Energy Technologies Pty Ltd

Website

https://g-tet.com

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

1–10 employees

Short description

gTET designs and delivers Organic Rankine Cycle (ORC) waste-to-energy and waste-heat-recovery systems for industrial facilities, mining operations, and municipal customers in Australia, South Korea, and Mongolia.

Ownership category

akta.pro rank

Product category

Waste-to-Energy Systems

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Power Boiler and Heat Exchanger Manufacturing (33241)

SIC

Cogeneration Services & Small Power Producers (4991), Engines & Turbines (3510)

akta.pro primary industry

Waste Heat Recovery & Heat Integration (HRSG/ORC, Pinch Analysis, Heat Exchangers) (EUABAJAF)

akta.pro secondary industries

Heat Recovery & Thermal Integration for Biomass Plants (Economizers, ORC, Heat Exchangers) (EUAAAGAL), Combined Cycle & Cogeneration (CHP) EPC (EUAEAAAB), Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI), Refuse-Derived Fuel (RDF) Production & Combustion (C&D/MSW-derived) (EUAAAKAB), C&D Waste-to-Energy & Alternative Fuels (RDF/SRF from C&D) (EUAIAHAK)

Keywords

• Waste-to-energy systems
• Organic rankine cycle
• Heat recovery systems
• Thermal energy management
• Waste heat recovery

Headquarters

HQ city

Rowville

HQ country

Australia

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations, Others

Revenue model

1. Solid Waste to Energy (W2E) Systems: Converting combustible fuels including sawdust, construction waste, green waste, medical waste, and household waste into power through combustion, pyrolysis, or gasification. Heat is transferred via suitable fluid to the ORC generator for power generation.
2. Heat Waste to Energy (W2E) Systems: Converting waste heat from sources like furnace exhaust, geothermal, solar thermal, and engine exhaust into power. Heat is transferred via fluid including steam, pressure hot water, glycol, thermal oil to the ORC generator.
3. Heat Waste to Heat (W2H) Systems: Transferring waste heat to other facility areas for process heating or energy reduction. Includes heat pumps providing up to 120°C hot water for significant energy and emissions reductions. Heat may be transferred through alternative fluids like air to water or water to glycol.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

gTET designs, manufactures and supplies Organic Rankine Cycle (ORC) based waste-to-energy systems that convert combustible solid waste and industrial waste heat into electrical power and usable thermal energy. The company delivers three core product streams — Solid W2E, Heat W2E and Heat W2H — custom-engineered to recover energy from industrial processes such as food processing, timber operations, mining and furnace exhaust.

Product overview

gTET (green Thermal Energy Technologies) offers a portfolio of waste-to-energy and waste-heat-recovery solutions built around its proprietary Organic Rankine Cycle (ORC) generator technology. The three core business streams are Solid W2E (converting combustible solid fuels into power), Heat W2E (converting waste heat sources into power), and Heat W2H (transferring waste heat to other facility processes). These are supported by key technology components including high-speed turbo-alternators operating at 45,000rpm with gas foil bearing technology and AS4777/IEC62109 certified electronic drives. The company serves diverse industries including food processing, timber, waste management, mining, and geothermal energy across Australia, South Korea, and Mongolia.

Differentiator

Problem solved

Functional benefit

Products and services

• Solid W2E (Waste to Energy) System

Quantifiable outcome

• Power savings exceeding AU$500k per annum at Australian Tartaric Foods
• +3 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators1 record

Recent moves4 records

Expansion highlights4 records

Direct peers

• Exergy International: Italian ORC turbine manufacturer serving geothermal, biomass, solar, and waste-heat-to-power projects. Competes head-to-head with gTET in custom-engineered ORC systems for industrial waste heat recovery.
• ORMAT Technologies: Global leader in Organic Rankine Cycle power generation, with geothermal and recovered-energy power plants. Directly comparable to gTET as an ORC equipment and project developer serving geothermal and waste-heat applications, but at materially larger scale.
• Turboden (Mitsubishi Power): Supplies ORC generators for biomass, geothermal, and waste heat recovery applications worldwide. Closest direct competitor to gTET in low-to-medium temperature ORC power generation, with a much broader product range and global installed base.
• Calnetix Technologies: Designs high-speed permanent magnet motors, generators, and turbomachinery including ORC expanders. Comparable to gTET at the high-speed turbo-alternator component level rather than full system delivery.
• ElectraTherm: Specialises in low-temperature waste heat to power using Organic Rankine Cycle technology. Closely comparable niche ORC competitor targeting industrial waste heat sources similar to gTET's Heat W2E offerings.

Regional players

• Clarke Energy: Distributor and integrator of gas engines and CHP solutions across Australia, Europe, and Africa. Comparable as a regional CHP/onsite power specialist competing for the same industrial onsite power and waste heat monetisation deals as gTET in the Australian market.

Broad incumbents

• Aggreko: Global provider of temporary and modular power and temperature control solutions including CHP and heat recovery rentals. Comparable as an industrial-scale supplier of distributed energy and heat-recovery equipment, though focused on temporary versus permanent installations.
• Siemens Energy: Major OEM of industrial turbines, generators, and CHP solutions including waste heat recovery via conventional steam cycles and emerging ORC offerings. Comparable as a broad incumbent competing for the same waste-to-energy and CHP customers gTET targets.
• Atlas Copco: Global supplier of industrial compressors, power equipment, and specialty solutions including heat recovery and CHP. Comparable as a broad industrial equipment incumbent with adjacent waste-heat and compressed heat recovery offerings.

Emerging players

• Capstone Green Energy: Manufactures microturbines for distributed power and CHP. Adjacent to gTET as an on-site power technology provider for industrial customers; Capstone's turbines themselves generate the waste heat streams that gTET's ORC equipment is designed to recover.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about gTET