Landfill Gas To Energy Case Studies

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Landfill Gas To Energy Case Studies
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Landfill Gas To EnergyThe Not So Glamorous Green
Energy

• The largest provider of landfill gas to energy
  generates enough electricity to serve 1,000,000
  homes
• Replaces over 7 million barrels of oil per year
• Makes up over half of the Biomass and waste to
  energy piece of the pie

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Breakdown of Global Energy Demand
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Growth in LFGE Will Continue

• Within 6 years hundreds of more facilities are
  planned and will be built in the US
• Total generating capacity will exceed 1000
  megawatts from all providers in the next several
  years

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Caterpillar is the Basic Building Block of our
Design

• 3516 gas Engine
• low energy fuel
• 800 kW
• 3520 gas engine
• Low energy fuel
• 1600kw

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We Built Upon Cats Typical Line Up
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Case Study Projects

• Elk River Municipal Utilities at the Elk River
  Landfill, Minnesota,
• Fitchburg/Westminster Landfill in Massachusetts,
• 5-Oaks Landfill in Taylorville Illinois,
• Closed landfill in New Milford Connecticut

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Case Study Projects
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ERMU Gas-to-Energy Facility

• Elk River Municipal Utilities was last of the 1st
  generation and first of the second generation
  facilities.
• Learning Center Addition

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Typical First Generation Layout

• Air intakes on roof
• Exhaust out back
• Minimize down time
• Open up access to engine for maintenance
• Add bridge crane

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Open Up Piping on Top for Maintenance
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Learning Center Provides Access to Public and
alternative energy

• Showcase for Energy City

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Other 1st Generation Features
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New layout maximizes expansion capability

• Multiple wings allow phased expansion
• Common infrastructure in Center builds in
  redundancy

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Fuel skid location Class I Div. 2
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Five Oaks Facility

• Equipment off of roof
• Flare greater distance from building
• Heat recovery for greenhouse
• Fuel skid outside

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Jacket water heat recovery used for
nursery/garden center
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Exterior fuel skid location reduces capital cost
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3516 Fuel inlet requires dual feed
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Crankcase ventilation is critical to engine life
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Jacket water and after cooler connections require
special Cat Flanges
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Mixed flow intake fans reduce exterior noise
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Fitchburg Site

• Utilizes 3520 platform
• Gas treatment prior to combustion

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Engine and piping configuration is different from
3516 platform
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Fuel Train is single 6 SS feed
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Sulfa treat removes S prior to combustion
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Stack heights Set by air permit
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Support systems minimize fluid change outs
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Additional support systems for maintenance

• Larger tanks for
• 8-engine plants

• Plant air added

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Retrofit at a closed facility

• Power generation is still profitable
• Turbines and support equipment removed and reused
• Many amenities excluded

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Concrete and steel reused as much as possible
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? QUESTIONS ?