Aalborg Energie Technik a/s (AET) Biomass Power Plant:

Western Wood Energy Plant, Wales, UK

The Western Wood Energy Plant (WWEP) is a biomass-fired power plant built and owned by Western Bio-energy Ltd.

The WWEP plant has an annual fuel input of 160,000 tons, which is supplied to the site as residual forestry timber, bark, brash bales, wood chips, saw mill residues and wood chips from clean/uncontaminated, recycled wood.

The biomass power plant was successfully commissioned and handed over in OCT 2008; 18 days ahead of schedule. A performance test showed that:

  • The overall cycle efficiency was 30%
  • The boiler efficiency was tested to 92%
  • The in-house power consumption for the whole plant was only: 2.4% of fuel heat input (1150 kW)

UK's Highest Availability

In 2009, a 6-month availability test was conducted and the overall availability for the whole power plant showed an impressive 99% (Apr - Oct 2009).

The initial high availability has continued for the first five years of operation and the plant still has the highest availability amongst all biomass-fired plants in the UK. Please see the data published by OFGEM.

Increase of Electrical Output

The electrical output has been increased by 1 MWe during an improvement made in 2009.


Turnkey Delivery

The delivery was carried out in a consortium between AET and a partner. AET designed, supplied, constructed and commissioned the following scope:

  • Fuel storage and preparation
  • AET fuel feeding and dosing system
  • AET Combustion System with AET Spreader Stoker and AET-Biograte
  • AET Biomass boiler with superheater and economiser
  • AET Combustion air system
  • Steam air preheaters
  • Feed water system
  • Oil burner
  • Ash handling system
  • Bag filter
  • Flue gas system and stack
  • Piping and ducting
  • Insulation
  • Structural steel for boiler house
  • Platforms and stairs
  • PLC control and SCADA system for the full plant
  • Instrumentation
  • Heat balance optimisation
  • AET, together with the consortium partner, also performed a 6 year O&M contract for the project.

Additional information

  • A presentation was made at PowerGen 2011 and All Energy 2012 about the project, showing the unique performance. Please contact sales for further information.
  • The Western Wood Energy Plant is Wales’ first commercial scale biomass project which generates 14MWe by burning forestry wood and clean wood processing residues in an AET state-of-the-art combustion plant. Read more
  • British Bioenergy News (2007): The £33 million flagship project, which will burn clean wood from sustainable forestry will be built in Port Talbot. The plant will only use clean wood material from sustainably managed forests and saw mills. This carbon neutral method of generating electricity will displace approximately 47,000 tonnes of carbon dioxide emissions. Read more

Questions? Need detailed information?

To obtain more information about this biomass plant and/or generally about Aalborg Energie Technik a/s:


Contact AET sales here

Boiler: 48 MWfuel heat input
  92 bara


16 MWe

The biomass power plant has a 48MWth Biomass Boiler with the newest AET Combustion System which fulfils stringent emission criteria without the use of SNCR and lime.

Western Wood Energy Plant had UK's highest availability - Data from OFGEM

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
  • aet@aet-biomass.com