Capital Metro CNG Implementation Study (TTI-2011-7)
Author(s):
S.M. Sandidge, J.H. Overman
Publication Date:
November 2011
Abstract:
This study provided technical assistance to Capital Metropolitan Transit Authority (Capital Metro) in evaluating and implementing a compressed natural gas (CNG)--fueled bus fleet. Researchers conducted a literature and peer review to gain current information on the use of CNG in transit vehicles. In addition, they conducted a life-cycle cost analysis comparing CNG to other transit technologies. Researchers found many things, including:
- Agencies began using CNG-fueled vehicles largely to reduce emissions. All peer agencies stated that emission reduction was the driving force behind switching to CNG.
- Peer agencies typically have a contract for fuel and are able to negotiate the CNG price based on usage.
- Modern CNG transit vehicles have a total operating range similar to that of diesel vehicles-between 350 and 450 miles between refueling.
- With credits or incentives, savings over diesel are about $21 million over 12 years, or about $1.75 million per year.
- To implement a CNG fueling operation, the agency needs at least 11 CNG vehicles to break even with the cost of operating diesel vehicles over a 12-year vehicle life.
Report Number:
TTI-2011-7
Electronic Link(s):
Document/Product: http://tti.tamu.edu/documents/TTI-2011-7.pdf
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