•  Services
  •  Design and Construction Projects
  •  SCADA Projects
  •  O&M Projects
__________________

SCS Energy provides ongoing operation/maintenance services for most of the power plants that SCS Energy has installed. SCS Energy also provides ongoing operation/ maintenance services for power plants that were installed by other firms. As of January 2009, SCS Energy had operation/maintenance responsibility for 18 power plants having a total capacity of 34 MW. Several of SCS Energy's operation/maintenance projects are listed below:

____________________________________________________________________

Industry Hills Cogeneration Project Owner: City of Industry Location: City of Industry, California

The project employs two 1.0 MW reciprocating engines, one of which is fired 40 percent on landfill gas and 60 percent on natural gas, and the other 100 percent on natural gas. The project began commercial operation in October 2002. The project employs post-combustion, selective catalytic reduction (SCR) for NO_x control.  Hot water from the engines is used to provide thermal energy to the hotel.  Because of the sensitivity of SCR to impurities in the landfill gas, extensive cleanup of the raw landfill gas was necessary.  

The project operates in parallel with Southern California Edison (SCE), and is base loaded and load-following. It displaces power purchases from SCE.  SCS was responsible for the following aspects of the project:

• Obtained a $600,000 Self-Generation grant from SCE;

• Designed, fabricated and installed a landfill gas pressurization and treatment skid incorporating gas chilling, reheat and multi-stage gas polishing equipment;

• Design and installation of a fuel blending system and control system to coordinate the flare station, fuel treatment, and fuel blending operation; 

• Design, fabrication and construction of a plant-wide SCADA system to link the individual control systems of the engines, the SCR systems, and the CEMS systems.  The SCADA system allows the facility to load follow and to be remotely accessed.

• Air permits and air emissions testing; and

• Ongoing operation and maintenance of the engine/generators, appurtenant equipment, and the fuel blending/treatment system.

The total plant capacity is 2.0 MW. SCS currently has responsibility for operation/maintenance of this facility.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Badlands Landfill LFGTE Project Owner: Riverside County Location: Moreno Valley, California

SCS is currently providing operation and maintenance services at this facility under a multi-year agreement. SCS assumed responsibility for this facility in July 2007.

The faciliyt employs a single Deutz TBG620 (V16) 1.3 MW reciprocating engine. Power is sold to the grid.

At the time SCS took responsibility for the plant, it was shut down. SCS undertook a remedial improvements program that returned the plant to reliable operation.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Redlands LFGTE  Project Owner: City of Redlands Location: Redlands, California

SCS is currently providing operation and maintenance services at this facility under a multi-year agreement. SCS assumed responsibility for this facility in August 2006.

The facility employs a single Deutz TBG 620 (V12) 1.0 MW reciprocating engine. The facility is located at the City's main wastewater treatment plant, which is adjacent to the City's California Street Landfill. Hot water from the engine is used to heat the wastewater treatment plant's digesters.

When SCS assumed responsibility for the project, it was shut down. SCS undertook a remedial improvements program that returned the plant to reliable operation. the plant now operates at 95 percent availability.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Seminole Road Landfill LFGTE Project Owner: DeKalb County Location: Dekalb County, Georgia

The Seminole Road Landfill LFGTE facility employs two Caterpillar 3520 engine/generators.  The plant has a capacity of 3.2 MW.  The project began operation in October 2006.

SCS’s responsibilities on this project included:

• Process engineering;

• Supply and installation of engine/generators and all associated electrical switchgear;

• Design and installation of all other mechanical equipment and piping;

• Design and installation of all electrical work;

• Design and construction of all civil, structural and site work;

• Design and supply of prefabricated metal building; and

• Design and installation of a plant-wide SCADA system, using SCS's proprietary Internet-based iSCADA technology.

SCS performed this work on a turnkey basis and is responsible for ongoing operation/ maintenance of the facility under a multi-year contract.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Dry Creek Landfill LFGTE Project Owner: Oregon Environmental Industries Location: Eagle Point, Oregon

The Dry Creek Landfill LFGTE project employs two Caterpillar 3520 engine/generators. The plant has a capacity of 3.2 MW. The plant began operation in September 2007.

SCS’s responsibilities on this project include:

• Process engineering;

• Supply and installation of engine/generators and all associated electrical switchgear;

• Design and installation of all other mechanical equipment and piping;

• Design and installation of all electrical work;

• Design and construction of all civil, structural and site work;

• Design and supply of prefabricated metal building; and

• Design and installation of a plantwide SCADA system using SCS's proprietary Internet-based iSCADA technology.

SCS performed this work on a turnkey basis and is responsible for operation and maintenance of the facility under a multi-year contract.

return to page top   _________________________________________________

Monmouth LFGTE Project Owner: County of Monmouth Location: Tinton Falls, New Jersey

Monmouth County engaged SCS to design and construct a 1.0 MW project at Monmouth County's reclamation center, adjacent to their landfill, in Tinton Falls, New Jersey. The landfill gas fired reciprocating engine supplies electric power to satisfy on-site power requirements. Excess power during off-peak hours is sent to the grid.

The project incorporates:

• Treatment of the landfill gas for hydrogen sulfide removal;

• Landfill gas pressurization;

• A Jenbacher 320 engine/generator;

• Switchgear and a step-up transformer; and

• A SCADA system using SCS's proprietary iSCADA technology.

The project began operation in November 2007. SCS has a two-year operation and maintenance contract for this facility.

SCS Responsibilities (marked with "X")

Feasibility Study
Grantsmanship
Power Sales Agreement
Environmental Permits
Interconnection Application
Detailed Design	X
Equipment Procurement	X
Construction QA/QC	X
Construction	X
Plant Startup	X
Ongoing Operation	X
SCADA System	X

return to page top   _________________________________________________

University of New Hampshire LFGTE Project Owner: University of New Hampshire Location: Rochester, New Hampshire

The University of New Hampshire LFGTE project employs two Caterpillar 3520 engine/ generators. The plant has a capacity of 3.2 MW. The project will begin operation in February 2009.

SCS’s responsibilities on this project included:

• Process engineering;

• Supply and installation of engine/generators and all associated electrical switchgear;

• Design and installation of all other mechanical equipment and piping;

• Design and construction of all civil, structural and site work;

• Design and supply of prefabricated metal building; and

• Design and installation of a plantwide SCADA system using SCS's proprietary Internet-based iSCADA technology.

The project will supply power to a landfill gas to pipeline quality gas plant being built at the same location. It will make the pipeline quality gas plant energy self-sufficient.

SCS performed this work on a turnkey basis and will be responsible for ongoing operation adn maintenance of the facility under a multi-year contract.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

The projects incorporate one Jenbacher 316 engine/generator at the Gude Landfill, and one Caterpillar 3520 engine/generator and one Jenbacher 316 engine/generator at the Oaks Landfill.  The total capacity of the facilities is 3.2 MW.  SCS is undertaking this assignment on a design/construct basis.  SCS will operate and maintain the facilities under a five-year agreement.

SCS’s responsibilities on this project included:

• Process engineering;

• Supply and installation of engine/generators and all associated electrical switchgear;

• Design and installation of all other mechanical equipment and piping;

• Design and installation of all electrical work;

• Design and construction of all civil, structural and site work;

• Design and supply of prefabricated metal building; and

• Design and installation of a plantwide SCADA system using SCS's proprietary Internet-based iSCADA technology.

Commercial operation is expected by March 2009.

return to page top   _________________________________________________

Flathead LFGTE Project Owner: Flathead Electric Cooperative Location: Kalispell, Montana

SCS is undertaking this project on a design/construct basis. It will employ a single Caterpillar 3520.

SCS's responsibilities on this project included:

return to page top   _________________________________________________

Penrose LFGTE Project Owner: Penrose Landfill Gas Conversion, LLC  Location: Sun Valley, California

The project employs four Cooper reciprocating engines with a total installed capacity of 7.5 MW.  The project is landfill gas fired and has the capability of co-firing with natural gas during periods of low landfill gas methane content.  The project sells power to the Los Angeles Department of Water and Power (LADWP).

In addition to full responsibility for plant operation/maintenance, SCS implemented a $2.4 million plant betterment project to reduce NO_x emissions, and to increase plant availability and capacity factor.  Key elements of the betterment program included replacement of the individual engine control systems, installation of a plant-wide SCADA system, and installation of continuous emissions monitoring systems (CEMS) on each engine.  In the first year of operation, SCS self-performed major overhauls of two of the engines, including an engine which had been abandoned in-place by the prior owner of the power plant.

SCS has been responsible for operation and maintenance of this facility since February 2005.

SCS Responsibilities (marked with "X")

Feasibility Study
Grantsmanship
Power Sales Agreement	X
Environmental Permits	X
Interconnection Application
Detailed Design
Equipment Procurement
Construction QA/QC	X
Construction	X
Plant Startup	X
Ongoing Operation	X

return to page top   _________________________________________________

Toyon LFGTE Project Owner: Toyon Landfill Gas Conversion, LLC Location: Los Angeles, California

The project employs two Cooper Superior reciprocating engines with a total installed capacity of 3.8 MW.  In 2005, the plant upgraded with a new engine control system and a continuous emissions monitoring system to improve air emissions compliance.  The plant currently sells power to Southern California Edison Company.

SCS has been responsible for operation and maintenance of this facility since January 2006.

return to page top   _________________________________________________

The project employs ten 30 kW Capstone microturbines which are fired on landfill gas with a methane content as low as 35 percent.  The project began operation in August 2002.

The project generates power to serve the on-site power needs of the landfill. The landfill’s on-site power requirements include those associated with the main landfill gas flare and office buildings. The microturbines were given to the Districts by the South Coast Air Quality Management District (SCAQMD).  SCS was responsible for installation of the microturbines and the design and construction of all supporting civil, mechanical, and electrical project elements.

The project is interconnected to Southern California Edison Company (SCE) for the purpose of securing supplemental and standby power. It operates in parallel with SCE and it is a baseload, load-following unit.

The project incorporates the following components:

§      An SCS designed/fabricated 200 scfm blower/refrigeration skid which pressurizes the landfill gas and reduces moisture and other impurities in the raw landfill gas;

§      Siloxane removal using activated carbon and silica gel;

§      Ten 30 kW microturbines;

§      Switchgear and a step-up transformer; and

§      An SCS designed/fabricated SCADA system which allows remote monitoring and operation of the facility from any location using a personal computer.

SCS executed this project on a design/construct basis.  The total capacity is 300 kW.  SCS is currently responsible for operation and maintenance of this facility.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Allentown WWTP Digester Gas Microturbine Project Owner: PPL Energy Services Location: Allentown, Pennsylvania

A 360 kW digester gas fired microturbine project was installed at the  Allentown wastewater treatment plant in December 2000.  The project incorporated twelve 30 kW Capstone microturbines equipped with hot water recovery equipment.  The hot water was used to heat the plant's anaerobic digesters. 

Problems with the microturbine plant's fuel pretreatment, fuel compression and hot water recovery equipment led to a suspension of plant operation in 2001.  SCS was engaged to completely upgrade and refurbish the plant including: 

• Fabrication and installation of a fuel treatment train incorporating hydrogen sulfide, moisture, and volatile organic compounds removal;

• Installation of a new fuel gas compressor;

• Removal and refurbishment of twelve microturbines and the addition of a thirteenth microturbine;

• Installation of new exhaust gas duct work, dampers and controls;

• Replacement of the failed cores of the hot water generators;

• Installation of an SCS designed/fabricated SCADA system; and

• Ongoing operation and maintenance of the facility.

SCS undertook this project on a turnkey basis.  Its total capacity after refurbishment was 390 kW.  The refurbished plant  commenced operation in November 2003.  SCS currently has operation/maintenance responsibility for this facility.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Burbank Microturbine Project Owner: City of Burbank Department  of Water & Power Location: Burbank, California

The project employs ten Capstone 30 kW microturbines and one 250 kW Ingersoll-Rand microturbine, all fired on landfill gas with a methane content as low as 38 percent.  The project commenced operation in April 2005.

A project incorporating the ten Capstone microturbines originally commenced operation at this location in July 2001.  After less than a year of operation, the project was shut down due to operational problems with the landfill gas conditioning equipment and the microturbines themselves.

SCS’s responsibilities on this new project included:

• Demolition of unnecessary equipment;

• Refurbishment of the Capstone microturbines;

• Installation of an SCS designed/fabricated landfill gas compression and treatment skid to serve all of the microturbines;

• Installation of a 250 kW microturbine;

• Installation of an SCS designed/fabricated SCADA system; and

• Upgrade of the electric cable and equipment to support the expanded plant capacity.

The project exports 85 percent of the power it produces to the municipally-owned power distribution system.  The project contributes to the City’s commitment to increase green power production.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

El Estero WWTP Fuel Cell Project Owner: Alliance Power Location: Santa Barbara, California

The project employs two 250 kW FuelCell Energy, Inc. fuel cells.  The fuel cells use digester gas as a fuel.  The methane content of the digester gas is 62 percent.  The project began operation in November 2004.

The project incorporates a waste heat hot water generator and an SCS designed/fabricated digester gas pressurization/treatment skid.  The skid removes moisture, particulates, hydrogen sulfide, halogenated compounds and siloxanes.  The hot water is used to heat the WWTP's anaerobic digesters, which frees up additional digester gas for power generation.  The entire power plant, including digester gas supply and hot water interfaces, are under the control of an SCS designed/fabricated SCADA system.

The power plant operates in parallel with Southern California Edison (SCE) as a baseload unit.  The power plant displaces power otherwise bought from SCE at retail rates.  The project qualifies for net metering under CaPUC regulations.

The total power plant capacity is 500 kW.  SCS executed the project on a design/construct basis.  The project is the largest digester gas fueled fuel cell project in California.  SCS currently has operation/maintenance responsibility for this facility.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

McCommas Bluff Gas Plant Owner: E/S Solutions Location: Dallas, Texas

The project is the largest project in the United States that produces pipeline quality gas from natural gas using pressure swing absorption (PSA) technology.  The inlet capacity is 9.0 mmscfd.

Principal components of the plant are as follows:

• Raw landfill gas and product gas compression (to 400 psi);

• Dehydration;

• Activated carbon absorption;

• Molecular sieve;

• Thermal oxidizer;

• CO₂ storage; and

• Other supporting equipment.

SCS has been responsible for operation/maintenance of this facility since June 2005.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________

Mountaingate Gas Plant Owner: SCS Renewable Energy  Location: Los Angeles, California

The Mountaingate Gas Plant cleans and compresses 2.0 mmscfd (1,400 scfm) of landfill gas. The processed gas is delivered to the University of California at Los Angeles (UCLA) via a 5.5 mile pipeline where it is co-fired with natural gas at UCLA’s 40 MW on-campus cogeneration plant.

The gas plant consists of the following major components:

• Two 450 hp, 100 psi landfill gas compressors;

• Moisture removal through air-to-gas and chilled water-to-gas heat exchangers;

• Hydrogen sulfide removal and non-methane hydrocarbon removal through chemical scrubbing (proprietary solvent) in a tray tower, followed by activated carbon polishing;

• Solvent regeneration in a stripper tower and disposal of the off gas in a thermal oxidizer; and

• Wastewater treatment consisting of hydrocarbon separation and pH adjustment.

The gas plant is located adjacent to the Mountaingate Country Club. 
A closed landfill under the golf course supplies feedstock to the gas plant.

SCS is responsible for the operation/maintenance of the gas plant and the pipeline, environmental permitting and reporting, liaison with the Mountaingate Country Club, and coordination of day-to-day operation with the UCLA cogeneration plant.

SCS Responsibilities (marked with "X")

return to page top   _________________________________________________