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Dane County CNG Experiences


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Presented by John Welch, Dane County, on May 7, 2013, at the Wisconsin Clean Transportation Program Partner Showcase in Madison, WI.

Presented by John Welch, Dane County, on May 7, 2013, at the Wisconsin Clean Transportation Program Partner Showcase in Madison, WI.

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  • 1. Dane CountyCNG ExperiencesJohn Welch, PESolid Waste ManagerDane CountyWisconsin Clean Transportation ProgramMay 7, 2013
  • 2. Dane County’s CNG History• Experience with landfill gas and digesters• Pipeline quality gas project• Continued to evaluate options• Pilot bioCNG project• Funding from SEO and WCTP– CNG station, bioCNG station, and vehicles
  • 3. What’s Driving Fleet Conversions• Fuel Savings• Proven Technology – engines• Emissions regulations– Capital Cost– O&M Costs– Payload• Available Fuel Stations (Chicken & Egg)• Contract Requirements• Image / Marketing
  • 4. Environmental BenefitsFuel Carbon Intensity(gCO2e/MJ)Gasoline 95.86CNG from Pipeline 68.00CNG from Digester 13.45CNG from Landfill 11.26
  • 5. Vehicles• 24 vehicles in fleet– All bi-fuel– F150s, F250s, F350s,Ford Fusion, Transit Connect– 7 Departments• Will add 15-20 in 2013– Some dedicated CNG– Plow Trucks, van, pickups, passenger car• Conversion cost– $10,000 - $12,000 each
  • 6. Vehicle Conversion Options• Dedicated, bi-fuel, or dual fuel– Available options & intended use– Range– Typical route (return to shop?)• Direct from manufacturer or OEMconversion– Available models– Warranty / service– Cost
  • 7. Vehicle ROI• Variables– Initial Conversion Cost• Dedicated or Dual-fuel– Miles driven per year– MPG– Fuel Savings~$2.00/gal
  • 8. Vehicle ROI ExamplesVehicle ConversionCostMPG Miles/yr GGE/yr Payback SavingsAfterPaybackCar $9,000 25 25,000 1,000 4.5 yrs $7,000Pickup $10,000 15 30,000 2,000 2.5 yrs $16,670Garbage Truck $50,000 3 24,000 8,000 3.125 yrs $62,000Delivery Van $30,000 6 25,000 4,200 3.6 yrs $37,000Note: Does not include any grant funds or maintenance costs
  • 9. Infrastructure ROI• Components of CNG cost– Supply Gas– Electricity– O&M– Capital Ammortization (grants)– Taxes and Tax Credits– Other incentives
  • 10. Dane County’s CNG Station– Natural gas only– 2 hoses– Fast-fill– 100 GGE storage– 30 GGE/hr from compressor– Funding• ~$280,000 grant from SEO and WCTP• ~$42,000 from County funds
  • 11. Cost to Produce CNGCNG w/o Grant2000 GGE/monthCNG w/o Grant5000 GGE/monthNatural Gas $0.709 $0.70Electricity $0.376 $0.22Capital $0.756 $0.30WI Taxes $0.247 $0.247Federal Taxes $0.183 $0.183Tax Credits -$0.50 -$0.50O&M $0.60 $0.60Total $2.188 $1.567
  • 12. Dane County’s BioCNG Station• Pilot System– Biogas from landfill• 5 GGE/hr– 1 hose– Fast-fill– 40 GGE storage– Funding• All Dane County• New System– Biogas from landfill• 10 GGE/hr– Pipeline gas backup– 2 fast-fill hoses– 4 slow-fill hoses– 200 GGE storage– Funding• $150,000 from SEO
  • 13. Old System New System
  • 14. BioCNG Differences• Extra Capitol• Extra O&M Costs• Cheaper Gas?– Other revenue potential for gas?• RINs
  • 15. CNG vs BioCNG ROI ResultsCNG w/o Grant BioCNG w/o GrantNatural Gas / Biogas $0.709 -Electricity $0.376 $1.04Capital $0.756 $1.974WI Taxes $0.247 $0.247Federal Taxes $0.183 $0.183Tax Credits -$0.50 -$0.50RINs - -$0.75O&M $0.60 $0.91Total $2.188 $2.921*2000 GGE/month. Breaks even at ~4000 GGE/month
  • 16. Hurdles• Vehicle Procurement– EPA Certifications– Limited options– Delays• Fueling Stations• Training– Infrastructure & vehicle maintenance• Learning Curve– Permitting, codes, regulatory agencies, taxes,maintenance, etc
  • 17. Other Considerations• Vehicle maintenance– Local options?– Tools and training• Building Modifications– Code compliance• Training– Technicians, drivers,Department heads, etc
  • 18. Vehicle Performance• Dyno testing• Driver experience• Reliable• Maintenance/Service
  • 19. Future of CNG in Dane County• Dane County - 10 yr Strategic Plan– Convert most/entire fleet to CNG– Looking for partners – fueling stations– Looking for bioCNG opportunities
  • 20. Questions?John WelchSolid Waste