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Dane County CNG Fleet 
John Welch, PE 
Solid Waste Manager 
Dane County 
August 19, 2014
What is CNG? 
•CNG - Compressed Natural Gas (methane) 
•Compressed to 3600 psi 
•Used as vehicle fuel 
What is bioCNG? 
•C...
Why CNG? 
•Financial 
–Less than $2.00/gallon 
–Less price fluctuation 
–Revenue source for landfills 
•Domestic Fuel Sour...
Environmental Benefits 
Burns Cleaner 
–Vehicle maintenance 
–60–90% less smog-producing pollutants 
–30–40% less GHG emis...
Environmental Benefits 
Fuel 
Carbon Intensity 
(gCO2e/MJ) 
Gasoline 
95.86 
CNG from Pipeline 
68.00 
CNG from Digester 
...
Vehicles 
•40+ vehicles in fleet 
–Some dedicated 
–F150s, F250s, F350s, 
Ford Fusion, Transit Connect, 
Plow Truck 
–7 De...
Vehicle Conversion Options 
•Dedicated, bi-fuel, or dual fuel 
–Available options & intended use 
–Range 
–Typical route (...
CNG Vehicle Considerations 
•Costs – Capital and O&M 
–Higher upfront costs 
–Comparable maintenance costs 
•Range & Load ...
Vehicle ROI 
•Variables 
–Initial Conversion Cost 
•Dedicated or Dual-fuel 
–Miles driven per year 
–MPG 
–Fuel Savings 
~...
Vehicle ROI Examples 
Vehicle 
Conversion Cost 
MPG 
Miles/yr 
GGE/yr 
Payback 
Savings After Payback 
Car 
$9,000 
25 
25...
CNG Fleet Considerations 
•Equipment maintenance 
–Local options? 
–Tools and training 
•Building Modifications 
–Code com...
Hurdles 
•Vehicle Procurement 
–EPA Certifications 
–Limited options 
–Delays 
•Fueling Station 
Availability 
•Learning C...
Future of CNG in Dane County 
•Dane County - 10 yr Strategic Plan 
–Convert most/entire fleet to CNG 
–Looking for partner...
Questions? 
John Welch 
Solid Waste Manager 
608-267-8815 
welch@countyofdane.com
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Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program - Dane County Presentation

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John Welch, Dane County, presented information on Natural Gas fleet experiences for our Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program in Madison, WI.

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Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program - Dane County Presentation

  1. 1. Dane County CNG Fleet John Welch, PE Solid Waste Manager Dane County August 19, 2014
  2. 2. What is CNG? •CNG - Compressed Natural Gas (methane) •Compressed to 3600 psi •Used as vehicle fuel What is bioCNG? •CNG derived from biogas •WWTP, digesters, landfills, etc
  3. 3. Why CNG? •Financial –Less than $2.00/gallon –Less price fluctuation –Revenue source for landfills •Domestic Fuel Source –Security –Local jobs •Noise – 80-90% reduction •Safe •Environmental Benefits
  4. 4. Environmental Benefits Burns Cleaner –Vehicle maintenance –60–90% less smog-producing pollutants –30–40% less GHG emissions –Lower carbon intensity
  5. 5. Environmental Benefits Fuel Carbon Intensity (gCO2e/MJ) Gasoline 95.86 CNG from Pipeline 68.00 CNG from Digester 13.45 CNG from Landfill 11.26 http://www.arb.ca.gov/fuels/lcfs/121409lcfs_lutables.pdf
  6. 6. Vehicles •40+ vehicles in fleet –Some dedicated –F150s, F250s, F350s, Ford Fusion, Transit Connect, Plow Truck –7 Departments •Conversion cost –$8,500 - $13,000 each –$60,000
  7. 7. Vehicle Conversion Options •Dedicated, bi-fuel, or dual fuel –Available options & intended use –Range –Typical route (return to shop?) •Direct from manufacturer or OEM conversion –Available models –Warranty / service –Cost
  8. 8. CNG Vehicle Considerations •Costs – Capital and O&M –Higher upfront costs –Comparable maintenance costs •Range & Load (tank size & configuration) •Management & Implementation (Drivers) •Vehicle Performance –Dyno testing –Driver Experience –Maintenance –Safety
  9. 9. Vehicle ROI •Variables –Initial Conversion Cost •Dedicated or Dual-fuel –Miles driven per year –MPG –Fuel Savings ~$2.00/gal
  10. 10. Vehicle ROI Examples Vehicle Conversion Cost MPG Miles/yr GGE/yr Payback Savings After Payback Car $9,000 25 25,000 1,000 4.5 yrs $7,000 Pickup $10,000 15 30,000 2,000 2.5 yrs $16,670 Garbage Truck $50,000 3 24,000 8,000 3.125 yrs $62,000 Delivery Van $30,000 6 25,000 4,200 3.6 yrs $37,000 Note: Does not include any grant funds or maintenance costs
  11. 11. CNG Fleet Considerations •Equipment maintenance –Local options? –Tools and training •Building Modifications –Code compliance •Training –Technicians, drivers, Department heads, etc
  12. 12. Hurdles •Vehicle Procurement –EPA Certifications –Limited options –Delays •Fueling Station Availability •Learning Curve –Permitting, codes, regulatory agencies, taxes, maintenance, etc
  13. 13. 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
  14. 14. Questions? John Welch Solid Waste Manager 608-267-8815 welch@countyofdane.com

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