High-Capacity Biomass Steam Boilers: Sustainable Steam Solutions from 1.5MW+
For large industrial facilities across New Zealand requiring significant steam output, Tubman Heating offers high-capacity biomass horizontal fire tube steam boilers with a thermal output of 1.5MW and above. Utilising sustainable solid fuels like low-moisture wood chip, wood pellets and a variety of biofuels typically derived from plant-based materials or organic waste. These robust systems provide a reliable, cost-effective, and environmentally responsible alternative to traditional fossil fuel-fired steam generation.
John Thompson Europac Range

- Designed and manufactured to the latest European Standard EN12953
- Three-pass conventional firetube wetback design with spiral tubes in both tube passes.
- Latest spiral-tube technology with heat transfers up to 100% greater than normal plain tubes to reduce gas outlet temperature to only 15°C above steam saturation temperature.
- Euro-BMS PLC-controlled energy management system to increase efficiency and reduce operating and maintenance costs.
- Provides steam generator options ranging from 1.128 MW (1800 Kg/Hour) to 13.164 MW (21 000 Kg/Hour).
- Standard design operating pressures ranging from 1100kPa, 1400 kPa, 1750 kPa and 2000 kPa.
- Can fire the following fuels with a total moisture content less than 25% without pre-ignition drying:
- Wood pellets
- Wood chips
- Wood pucks
- Grape pomace
- Nutshells
- Sunflower seed husks
- Pre ignition drying application is required for fuel types with a total moisture content is access of 25%.
John Thompson Omnipac Range

- Bespoke engineered solutions
- Steam output: 4,000 kg/h to 25,000 kg/h
- Design pressure up to 40 bar
- Options for superheated steam for cogeneration
- Fires fuels with <50% moisture (e.g. wood pellets, chips, corncobs, torrefied biomass)
- Added superheater for power generation up to 4.3MWp
John Thompson Toripac Range

- Bespoke engineered solution.
- Steam output range from 1000 kg/hour to 13,000 kg/h.Design pressure of up to 32 Bar.
- Offers options for super-heated steam generation suitable for cogeneration of electricity with steam turbines.
- Can fire the following fuels with a moisture content less than 40% without pre-ignition drying:
- Wood pellets
- Wood chips
- Wood pucks
- Grape pomace
- Nutshells
- Sunflower seed husks
- Corncobs
- Dried hops
- Torrefied biomass
High-capacity biomass steam boilers, such as the John Thompson range, are industrial-grade heating systems designed to generate substantial quantities of steam, they achieve this by burning renewable biomass fuels, efficiently converting thermal energy to heat water and produce steam.. These boilers are engineered for continuous operation and high efficiency, making them ideal for processes demanding steam, such as power generation, large-scale industrial processes, and district heating schemes throughout New Zealand. They are specifically designed to combust wide range of biomass fuels with low moisture content typically with a total fuel moisture content of less than 25%, however specialized combustion solutions are available for fuels with a total moisture content up to 40%.
Opting for a high-capacity biomass steam boiler from Tubman Heating offers numerous advantages for large-scale operations:
- Versatile & Sustainable Fuel Options: These boilers are designed to operate efficiently on low-moisture wood chip and a wide array of biofuels, including firewood pellets, wood chips (meeting specific moisture content requirements), wood pucks, grape pomace, nutshells, torrefied wood and sunflower seed husks. This fuel flexibility can enhance supply security and cost-effectiveness, utilising locally sourced and often waste-derived resources in New Zealand.
- Significant Carbon Emission Reduction: By utilising carbon-neutral biomass fuels, these steam boilers drastically reduce your facility’s reliance on fossil fuels, leading to a substantial decrease in greenhouse gas emissions and helping meet sustainability targets and comply with environmental regulations in New Zealand.
- Economical Operation for Large Demands: While initial investment may vary, the stable and often lower cost of biomass fuels compared to fossil fuels can lead to significant long-term operational savings, especially for facilities with substantial and continuous steam requirements or those generating biomass byproduct form their operations, allowing them to optimize fuel efficiency and reduce overall energy costs. Tubman Heating can help assess the most cost-effective fuel options available in your region.
- High Efficiency & Reliable Performance: Engineered for demanding industrial applications, these boilers offer high combustion and thermal efficiency, ensuring maximum energy extraction and conversion from the fuel. Their robust construction and advanced control systems guarantee reliable and consistent steam production for critical processes.
- Automated Fuel Handling for Continuous Operation: High-capacity biomass steam boilers feature sophisticated automated fuel handling systems, from storage to combustion. This ensures a continuous and consistent fuel supply, minimising manual intervention and optimising operational efficiency for large-scale steam generation.
The process within these large-scale steam boilers involves:
- Fuel Storage & Handling: The chosen biofuel is stored in a dedicated area and automatically conveyed into the boiler’s combustion system via robust feeding mechanisms.
- Combustion Process: a stoker automatically feed the fuel with a stoker into the boiler furnace, where it undergoes continuous combustion driven by radiant heat. The furnace is specifically designed to maximize heat release and ensure efficient energy transfer Advanced combustion controls regulate both the fuel supply and combustion air, optimizing burning efficiency to extract the maximum energy from the fuel. This system supports clean and complete combustion, even when using diverse biofuel types.
- Steam Generation: The thermal energy produced by the combustion process and is efficiently transfers to the boiler feed water. This process generate high-pressure steam suitable for various industrial processes or power generation.
- Emissions Control: Advanced emission control technologies are integrated to remove volatile compounds and particulate matter from combustion exhaust gasses. These systems ensure compliance with environmental standards in New Zealand, minimizing air pollution and promoting sustainable energy practices.
- Ash Management: Automated ash removal systems effectively collect and remove ash from the boiler produced during combustion.
These powerful steam boilers are ideally suited for facilities or industries with substantial steam demands, including:
- Large-scale industrial processing plants.
- District heating networks supplying entire communities or industrial parks.
- Power generation facilities utilising biomass as a fuel source.
- Major food and beverage processing operations.
- Large hospitals and institutional campuses with significant heating and sterilisation needs.
- Timber processing and manufacturing facilities that can utilise their own wood waste as fuel.
Tubman Heating has a proven track record of delivering and supporting large-scale heating and steam solutions across New Zealand. Our expertise in biomass energy systems ensures you receive a high-performance, reliable, and sustainable steam generation solution tailored to your specific needs.
Our Services Include:
- Comprehensive Consultation & System Design: Our experienced engineers will work with you to understand your steam requirements and design a bespoke biomass steam boiler system that maximises efficiency and fuel flexibility.
- Turnkey Supply & Installation: Tubman Heating manages the entire project, from sourcing and supplying the high-capacity boiler to complete installation and integration with your existing infrastructure.
- Ongoing Maintenance & Expert Servicing: We provide comprehensive maintenance and servicing packages to ensure the long-term reliability and optimal performance of your biomass steam boiler.
- Fuel Sourcing & Logistics Advice: Leveraging our network and expertise, we can provide guidance on sourcing cost-effective and sustainable low-moisture wood chip and biofuel supplies throughout New Zealand.
Contact Us Today
Are you considering a biomass boiler for your facility? Contact Tubman Heating today to discuss your heating requirements and learn how we can help you transition to a sustainable, cost-effective heating solution.