I recently took a cab ride in an unusual vehicle. I talked to the driver and he told me that it ran on compressed natural gas (CNG). You can see the blue CNG logo below the Ford logo on the right side. The driver said that the vehicle was assembled overseas in Turkey.
Compressed Natural Gas (CNG) Fuel Prices & Performance
Per the driver – he filled up with approximately 8 “gallons” of CNG. This is measured as a “gasoline gallon equivalent” or GGE to try to provide an understandable metric for typical car owners. He said that this took him around 200 miles and cost around $2 per GGE. In Chicago terms this is probably about 1/2 the costs of what a gasoline powered truck would cost per mile (ignoring the higher acquisition costs of this custom SUV). This site shows the range of costs that customers are seeing per GGE. Per this site there are 6 CNG stations in Chicago with costs between $2 and $2.50 per GGE (costs are sometimes out of date by station and it is not always clear if prices are up to date). The driver also said that the power that the engine put out declined as it got emptier; I believe that this is different than how gasoline or diesel engines behave. The city of Chicago has a program to open CNG filling stations and subsidize cab companies to pay the extra up front costs of purchasing these customized vehicles.
The competitiveness of the CNG vehicles depends on several factors, most notably the price of natural gas. Since the price of natural gas is around $2 / MCF, it is at an all-time low. The price of natural gas (pre-fracking) peaked at around $14 / MCF, more than 7x its current price. Assuming that CNG “at the pump” moves with the cost of the underlying commodity, then you would go from about 1/2 the cost of gasoline (today) to up to 3x+ higher, if we had another price swing like that again in the United States, OR if we were exposed to the “market clearing” price of natural gas around the world.
Per this article in Reuters, the gap between the US rates and what foreign buyers (particularly Japan and Korea) are willing to pay is very significant.
The surge in gas output has made companies such as Chesapeake and Exxon Mobil’s XTO victims of their own success, unleashing a surplus of supply that could keep prices — and therefore profits — depressed for decades. For them, selling gas to Japan or Europe — which buys imported LNG at five or six times the domestic price of $2.50 per million British thermal units — is essential to continue expanding their U.S. business, creating jobs in the process. The shale gas boom is on track to support 1.5 million jobs across the United States by 2015, according to an industry-funded study by IHS Global Insight. Export licenses will make big winners out of some firms such as Cheniere, which last year secured the first and, so far, only export permit from the Energy Department.
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