From Wood Waste to Power.

How it works

Clean Firm Power reimagines renewable energy.


Our system helps businesses and local government convert costly waste waste to renewable heat and power on site.



We provide engines that runs on syngas from residue woodchips and nutshells to produce renewable heat and power. As Australian agents for German manufacturer Re2 (Rethink Energy), we use world leading technology to create solutions for businesses with high energy and waste disposal costs.


A Total Rethink.

Woodchips are turned to gas which runs a modified gas engine generator.



Clean, Continuous and Cheap Energy

Our systems produce baseload electricity and heat by using locally available residues streams.

Complete Solutions

From woodchip handling, gasifier, suitable CHP unit, hot water handling, electrical integration, solar/hybrid, inverters and batteries we offer complete solutions. 

Performance matched to your needs

Our modular system architecture can be configured from 35kW to multi-megawatt, base-load or peak. 

Cost-effective maintenance

Maintenance can be carried out by yourself or by our service teams (WA, Tas and QLD)

We combine gas engines with solar PV and Li Ion batteries to deliver clean firm power.


Thanks to the robust construction and innovative system technology, a wide variety of input materials in the form of wood chips can be used as an energy source.


Taking a tried and true biomass energy technology from Germany and adapting it to southern hemisphere conditions allows us to combine the benefits of continuous renewable energy with the advantages of abundant solar resources; advances in battery technology and inverter connected electrical systems.



From fruit crates in Kununurra, wood pallets in Melbourne and nutshells in Bundaberg, Australia is full of potential fuel sources. With more than 1,000 systems installed globally, our technology has converted e green waste, residual forest wood, nutshells and construction wood waste into renewable heat and power.


Who's it for?

It’s Nuts.

Already in operation in macadamia farms in Queensland, Clean Firm Power is changing the way producers think about energy.

Macadamia Farm: Freedom Fresh Australia

By Helium Marketing • January 7, 2025
The client Freedom Fresh Australia The creators of happy nut operate a Macadamia receival and drying system in Elliot Heads, Bundaberg QLD. The challenge The client was rapidly expanding operations and pushing the limit of the available electrical power system. This had them using more than $30,000 month of diesel and LPG to dry the Macadamias. The Solution Clean Firm Power installed a world first macadamia shell plus solar powered microgrid to provide electricity for the processing system and heat for drying macadamias. The Set Up and Specs After identifying predicted site loads and drying configuration Clean Firm Power worked with Freedom Fresh Australia to set up a ‘living lab’ to produce renewable heat and power from Macadamia shells and sunlight. This system is a demonstration and testing plant for a larger scale implementation at Freedom Fresh’s new factory. The system included: 2 x 45kW Spanner Gasifiers 40kW ground mount Solar 60kW roof mount solar 220kWh of Lithium Ion Batteries Microgrid Systems Innovative Powercore (100kW Stand alone, grid forming Inverter and control system Implementation The system was installed and commissioned over a 7 month period. The next 12 months will be a testing/demonstration phase. The system is capable of meeting a 100kW continually and provides 200kWth of heating energy for drying or other use. Operates on Macadamia shells Remote monitored No grid connection required for Clean Continuous Firm Power Results The system has just finished commissioning and 2025 will see the system put through its paces during the Macadamia drying season (February to September). Outcomes so far: Reduced carbon footprint Reliable power due to grid limitations Ability to use locally available residue Learn More Here are some case studies from Re²