CNG in Colonial Williamsburg

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CNG in Colonial Williamsburg

• Williamsburg Transport
• CNG Fleet/Colonial Williamsburg Bus Operations

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Orion VII CNG 35
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Diesel-CNG side to side
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The Advantages

• Environmental
• Fuel Costs

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Environmental Positives

• PM Particulate Matter- 84 -98 lower
• NOx-49 lower
• CO carbon monoxide levels are lower by 52-84
• CNG is Methane-not conducive to ground ozone, but
  may be a greenhouse gas

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Clean Quiet
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Disadvantages (compared to diesel)

• Routine Maintenance Issues
• Initial Costs
• Fueling efficiency
• Load factors and acceleration
• Weight of vehicles

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What are the fuel cost savings?

• CNG currently running about 1.10 per cubic foot
• 12,483 gge (gasoline gallons equivalent) per
  month (April)
• 45,630 miles in April _at_ 3.65 gge per mile
• About 30 cents per mile fuel cost compared to
  diesel of about 48 cents per mile

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Fueling Battery Compartments
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Fueling station
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The Compressor/Generator Station
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Conclusion

• CNG is an environmental plus
• CNG has a place in the AFV lineup
• Long term availability of CNG
• 2.3 million use CNG transit in Historic Triangle
  annually
• Cost saving in fuel was not expected, but is a
  big positive at the present