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Development of biomass plants


Biomass Power Plant Kauai, Hawai, USA

Technical data Reference sheet

The Task

The Standardkessel Baumgarte Group is financing and constructing on the island of Kauai belonging to the US Federal State of Hawaii a biomass-fired power plant with a net capacity of 7.5 MW. The plant will be operated by a joint venture company, Green Energy Team LLC, Hawaii, with the involvement of the former Standardkessel Baumgarte Contracting GmbH (SBC) and the local partner Green Energy Hawaii LLC. The proven grate technology will be supplied by Standardkessel Baumgarte. The biomass-fired power plant is in future to feed electricity into the network of the local grid operator Kauai Island Utility Cooperative (KIUC). With this energy, approx. 8,500 households will be supplied and nearly 11% of the island’s energy requirements will be met.


The Solution

To comply with the terms of reference Standardkessel Baumgarte supplied a biomass-firing plant with a pusher-type grate with natural circulation steam generator and a flue gas cleaning plant arranged downstream. The biomass is premixed in the fuel storage area and fed via the fuel conveying equipment to the feeding-in  chutes of the biomass-fired plant. The proven firing and boiler conception is designed especially for the combustion of biomass. The generously dimensioned furnace with radiation pass arranged downstream ensures outstanding burn-out of the flue gases. The grate-firing system is supplied with combustion air via separate primary air/secondary air systems. The steam generator removes the combustion heat from the flue gas and produces superheated steam that supplies the steam turbine arranged downstream.


For more information, please see our reference sheet.

"Thanks to our broad product portfolio in the field of biomass firing systems, we can always offer our customers an optimal solution"



Sebastian Zimmer

Head of Proposals PP


Technical data


Fresh Wood

Low Heating Value

min.7.0 MJ/kg

nom.10.2 MJ/kg

max.12.3 MJ/kg

Fuel Throughput

nom.81.200 t/a

Rated Thermal Input

27.3 MW

Electrical Power Output

6.7 MW

Steam Capacity

32 t/h

Steam Temperature

477 °C

Steam Pressure

79 bar

Feed Water Temperature

143 °C

Rated Flue Gas Volume

max. (excl. Rezi)49,000 m³/h i.N.


120 °C

Type of Boiler

Natural Circulation

Year of Commissioning


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