2Project Organization Grant Contributor Power Customer Design, build, operates project facilitiesOwn Power Plant and electrical infrastructureOwns, operates landfill and LFG Collection systemOwns LFG Processing and transmission facilitiesGrant ContributorPower Customer
3Anchorage Regional Landfill 300,000 tons annually8 million tons in-place22 million ton total capacityExpected life – 2050
4Landfill Gas Generation Organic MaterialsInWaste StreamAnaerobicDecompositionMoistureHeatLandfill Gas(CH4, CO2+ trace organics)
5Gas Characteristics Typically Makeup - 50% Methane, 50% CO2 Typical energy content – 500 BTU/ft3Typical moisture content – saturatedMay contain other constituents (Oxygen, Nitrogen, VOCs, siloxanes, H2S, etc.)
6LFG Generation General industry rules of thumb: Each million tons of waste in place has the potential to generate cf/min of LFG.Each ton of waste in place has potential to generate 3,900 – 6,600 cf of LFG over the life of the landfill.
8Proposed Project Layout Gas Processing FacilityExisting Gas Collection SystemExisting Blower/Flare SiteProcessed Gas PipelineProposed Power Plant
9Gas Collection System (GCS) Purpose: Landfill emission control; collects LFG to central facilityComponents: Wells, piping, blowers, flare (constructed by SWS in 2006 with future expansions as needed)Ownership: SWSOperator: SWS
10Current System in Place Constructed 2006 for air quality compliance.Blower plant2,400 scfm capacityEnclosed flare2,000 scfm capacityGas collection wells and piping35 vertical wells12 horizontal wells8 leachate system connectionsContinued expansion as landfill ages.
11Gas Processing System (GPS) Purpose: Process gas from field to fuel quality; deliver to Power PlantOperation: Gas delivered to GPS. Condensate and other undesirable components removed from LFG returned to GCS. DU takes ownership of LFG at Title Point (T). Delivered to Power Plant by pipeline.Ownership: SWSOperator: Doyon UtilitiesGas Processing SystemLFGCONDENSATELFGTPIPELINEProject Cost: $3.8 millionComponent Financing: $2 million from AEA Grant, all other costs paid by DU.
12JBER Distribution Grid Power GenerationARLFENCE LINELFGJBERPIPELINEJBER Distribution GridPower GenerationPurpose: Uses LFG as fuel to produce electricity. All power delivered to JBER through Ft. Rich D Street SubstationComponents: Generators, switch gear and related controls.Ownership: Doyon UtilitiesOperator: Doyon Utilities
13Power Plant Under consideration: Jenbacher J420 Generators 5th generating unitOrganic Rankine heat recovery unitsJenbacher J420 Generators1.4 MW per UnitInitial installation – 4 unitsOperates on either LFG or commercial natural gasChange fuel source on the fly
14Contract Timeline COMMISSIONING DEVELOPMENT 201120122013PERFORMANCE TESTINGCONTRACT PERFORMANCEDEVELOPMENTCOMMISSION20 YEARS90 DAYSCONTRACTAWARDDEVELOPMENTPermitting, design, procurement and construction of GPS and Power PlantNo gas sold or delivered.No minimum gas purchase requirement.COMMISSIONINGStartup and testing of all components and systemsGas delivered at no cost.No minimum gas purchase requirement.90 day maximum duration.
15Contract Timeline CONTRACT PERFORMANCE PERFORMANCE TESTING 201120122013PERFORMANCE TESTINGCONTRACT PERFORMANCEDEVELOPMENTCOMMISSION90 DAYS20 YEARSCONTRACTAWARDPERFORMANCE TESTINGFine tune operation of GCS, GPS and power plant for optimizationAll gas sold at contract price.No min. gas purchase requirement.Ends latter of 1/1/13, first month after Commissioning or 24 mos. from Contract AwardCONTRACT PERFORMANCEFull system operation.Tier gas pricing in effect.Take Or Pay minimum gas purchase requirement.
16A Win – Win Project Municipality JBERThe project will produce ~50% of the JBER power demandDual fuel capability assures stable power supplyImmediate availability of fuel provides more reliable power in emergencies.MunicipalityGenerates revenue off a waste product.Revenues will offset operating costs which will reflect in user tipping fees.
17Landfill Gas to Energy Questions? Contact Mark Madden, P.E. Director Municipality of AnchorageSolid Waste Services