1 © Wärtsilä 2 April 2008 Sampo Suvisaari

Burning Biomassin Central America

Sampo Suvisaari,General Manager

Power Plants, Central AmericaWärtsilä North America, Inc.

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�Background of Wärtsilä

� Biomass Combustion Tests in Honduras

� Test Results

� Wärtsilä BioPower

Agenda

3 © Wärtsilä 2 April 2008 Sampo Suvisaari

Wärtsilä Power Plants

Wärtsilä is a leading supplier of power plants for the decentralized power generation market. Wärtsilä offers power plant solutions based on oil, gas

and dual-fuel engines, as well as biomass-fuelled heat and power plants.

Wärtsilä has delivered a total of more than 34,000 MW of power plantsworld-wide in the power range of 1 MW to 300 MW.

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Oil & Gasapplications

Crude oil,associated gas,dual-fuel

4…200 MW

Biopower

Main fuel is wetwood basedsolid biomass.Thermalenergy1…17 MW

Combined heat& power

CHP

1…100 MW

Oil power plants

Heavy fuel oil base load power plants

1…400 MW

Market segments

Gas power plants

Base load,intermediate andpeak load

4…300 MW

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Decentralized power generation

� Effective utilization of heat loads

� Lower transmission costs� Maximized availability

� Optimized plant size through step-by-step investment

� Lower investment risk in changing market conditions

� Higher profitability

Benefits:

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High Efficiency Cogeneration

� Up to 90% total efficiency (45% electrical)

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� Background of Wärtsilä

�Biomass Combustion Tests in Honduras

� Test Results

� Wärtsilä BioPower

8 © Wärtsilä 2 April 2008 Sampo Suvisaari

Biomass Combustion Tests

• Tests were part of an EEP Project (Energy and Environment Partnership with Central America)

• Tests carried out by VTT (Technical Research Centre of Finland)

• Test equipment from Wärtsilä

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Biomass Combustion Tests

• Tests conducted in a sugar mill in San Pedro Sula, Honduras

• Test objective to obtain information on combustion characteristics of local biomass

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Most Promising Central American Biomasses

• Sawdust• Bagasse• Rice husk• Palm Oil Fibres• Palm Oil Bunches• Coffee Residue• Eucalypt

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Wärtsilä Test Container

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13 © Wärtsilä 2 April 2008 Sampo Suvisaari

� Background of Wärtsilä

� Biomass Combustion Tests in Honduras

� Test Results

� Wärtsilä BioPower

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Tests Results

• All of the tested fuels can be used successfully

• Feeding and ash removal systems need adaptation depending on fuel type

• Corrosion problems possible with palm oil residues

• Relatively low power density which needs to be take n into account in system design

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� Background of Wärtsilä

� Biomass Combustion Tests in Honduras

� Test Results

�Wärtsilä BioPower

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Wärtsilä BioGrate Combustion System

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Patented Automated Rotating System

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Grainger Sawmill, Ireland

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Wärtsilä Biopower Plant in Finland