Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program - Dane County Presentation
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Transcript of Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program - Dane County Presentation
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?
• CNG derived from biogas
• WWTP, digesters, landfills, etc
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
Environmental Benefits
Burns Cleaner
– Vehicle maintenance
– 60–90% less smog-producing pollutants
– 30–40% less GHG emissions
– Lower carbon intensity
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
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
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
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
Vehicle ROI
• Variables
– Initial Conversion Cost
• Dedicated or Dual-fuel
– Miles driven per year
– MPG
– Fuel Savings
~$2.00/gal
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
CNG Fleet Considerations
• Equipment maintenance
– Local options?
– Tools and training
• Building Modifications
– Code compliance
• Training
– Technicians, drivers,
Department heads, etc
Hurdles
• Vehicle Procurement
– EPA Certifications
– Limited options
– Delays
• Fueling Station
Availability
• Learning Curve
– Permitting, codes, regulatory agencies, taxes,
maintenance, etc
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