How Can We Help You?


 

The Anchorage Landfill Gas-to-Energy Project is a partnership between the Municipality of Anchorage Solid Waste Services Department and Doyon Utilities. The project uses landfill gas, a byproduct of waste decomposition in the landfill to produce 7 Megawatts of electricity. The electricity is delivered to the Fort Richardson side of Joint Base Elmendorf Richardson (JBER).

The plant output meets the off-peak power demand for the Fort Richardson side and approximately 25% of the JBER-wide electrical demand. As the largest green energy project in the U.S. Air Force Pacific Theater of Operations, the project far exceeds renewable energy requirements for federal facilities as required by the Energy Policy Act of 2005.

The project currently operates five GE Jenbacher JGS 420 internal combustion engines. The facility is designed to ultimately house 6 units. Prior to this project, the gas was collected and burned in a flare to meet Clean Air Act standards. The landfill is expected to produce commercial quantities of landfill gas for approximately 60 years.

The project won the 2013 Silver Achievement award from the Solid Waste Association of North America (SWANA) for Landfill Utilization Projects.

Power Plant

Engines 

Jenbacher JGS 420 Landfill Gas 

Plant Design Configuration

Currently 5 units with capacity for 6 units 

Engine Configuration

20 cylinder internal combustion 

Electrical Power Output

1,400 kilowatts per unit at 12.5 KVA 

Fuel Consumption 

12.3 MMBTU per hour per unit 

Equivalent LFG Consumption             

400 CFM at 50% Methane 

Fuel Supply 

Landfill Gas or Commercial Natural Gas 

Emission Controls

LEANOX continuous monitoring system 

Landfill Gas Processing

Blower   

HSI multi-stage blowers - 2 units 

Blower Capacity                                   

2,500 CFM, 30 inches WC vacuum 

Delivery Pipeline Pressure               

9 PSIG 

Gas Pre-treatment 

Moisture removal and compression only 

Landfill

Capacity

44 million cubic yards 

Design Life 

62 years (through 2050) 

Typical Disposal Rate 

1,200 ton per day; 310,000 ton per year 

Total Design Footprint 

165 acre, 117 currently lined 

Gas Collection System 

65 wells / collection points 

Current Gas Production 

2,200 CFM at 50% Methane 

Estimated Peak Production 

2,800 CFM at 50% Methane 

Gas Energy Content 

500 BTU/cubic foot at 50% Methane 

Anticipated Commercial Gas Life       

80 years 

The Landfill Gas to Energy Project came on line in 2012. The initial construction cost of the project, including Gas Processing Building, gas transmission pipeline, Power Plant (5 generating units), transformers, switch gear and power line connections to Ft. Richardson grid - $31 million.