AET Biomass Cogeneration Plant

AET designs and supplies turnkey biomass cogeneration (CHP) plants with excellent and well-documented performance and availability.

The benefits of an AET cogeneration plant include:

  • The unique AET Combustion System
    » Low flue gas emissions,
    » High combustion efficiency
    » Low in-house power consumption
    » Best Available Technology
  • High fuel flexibility
    » Lower operating costs
  • High boiler and plant efficiency
    » Optimised heat balance
    » Good customer business case
  • High availability
    » Improved customer business case

Determining the optimal design for a biomass-fired combined heat and power plant involves factoring in many different parameters such as optimal operating conditions, fuel, boiler, turbine, steam/water cycle, heat requirements etc.

AET can assist you in optimising the plant parameters as our expert employees have many years of experience and extensive knowledge of steam cycles, boiler systems and steam turbines.


AET Biomass Cogeneration Plant parameters


The AET combined heat and power (CHP) plants can be designed for all types of biomass. The high efficiency, very stable electricity production and extremely high availability ensure a good business case for you as the investor. The design parameters below form the basic platform for our plants:


Fuel heat input

25 – 170 MWth

Net electrical power output

7 - 60 MWe

Net plant efficiency

45 - 90 % depending on steam requirements and process integration
70 - 105 % depending on district heating requirements and process integration

Boiler design

Water tube boiler with natural circulation
Single pressure or double pressure (reheat, e.g. 140 bar and 25 bar)

Operating time

At least 8000 hours without shutdown for manual cleaning

Boiler efficiency

91% - 94% depending on fuel moisture

Emission values

Better than European requirements (large boiler or WID)

Fuel flexibility

Fuel moisture content: 10 - 55%

Auxiliary burner

Not necessary

In-house power consumption

< 2.5% of fuel heat input


Better than 96%


To see some of AET's Cogeneration Plants, click on the links below:


Process integration:

District heating:

18% of all district heating  for Linz, the third-largest city of Austria, is served by a biomass-fired combined heat and power (CHP) plant.

Boehringer Ingelheim Pharma KG, Germany, a 70 MW power plant, using waste wood as fuel. 

Conveyor bringing the woodchips to the boiler.

Zignago Power s.r.l.–successfully producing Green Energy in Italy
The 49 MW Zignago Biomass power plant in Italy, owned and managed by Zignago Power s.r.l., belonging to the Marzotto family empire, has since its installation in 2013 been running with a very high availability (98,8%). The plant utilises wood residues and agricultural waste such as straw, mischantus and maize. >Read more
Zignago Power s.r.l.–successfully producing Green Energy in Italy
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  • Aalborg Energie Technik a/s
  • Alfred Nobels Vej 21 F
  • 9220 Aalborg East, Denmark
  • Tel +45 96 32 86 00