Why Choose Compressed Natural Gas, CNG?

  • Greener, quieter
  • Less engine wear
  • Less oil changes
  • Less expensive $2/gal.

This chart shows trends in Clean Cities petroleum savings by various types of alternative fuel vehicles from 2004 to 2013.

Source: Clean Cities annual metrics reports, 2004-2013.

This chart compares the intensity of life cycle greenhouse gas (GHG) emissions of various alternative fuels in light-duty vehicles. Alternative fuels with the greatest GHG benefits are compressed natural gas (CNG) derived from landfills, ethanol from forest waste, and electricity.

source: www.arb.ca.gov/regact/2009/lcfs09/lcfscombofinal.pdf


What are the benefits of using natural gas in transportation?

Natural gas is produced both worldwide and domestically at relatively low cost and is cleaner burning than gasoline or diesel fuel. Natural gas vehicles show an average reduction in ozone-forming emissions of 80 percent compared to gasoline vehicles.

The cost of CNG can be as little as half that of a gallon of gas if you use a home refueling device. And at commercial stations, the cost is still significantly less than gasoline. Some research pegs the fuel savings at about 30 percent less than gasoline on average, although as of this writing the savings are nearly 40 percent.

Southern California Gas estimates CNG currently costs about 40 percent less than gasoline. As of July 2005, PG&E charges approximately $1.40 per therm, equivalent to about $1.78 per gasoline gallon, for CNG used as a motor fuel.

The driving experience
Drivers will be hard-pressed to notice a significant difference in performance between a CNG-powered vehicle and one fueled by gasoline. Though acceleration is typically slower, the car starts and drives normally. As a bonus, in some states, drivers of CNG vehicles can use the HOV lane. A study of New York City taxis running on natural gas concluded that maintenance costs were also reduced.

Air quality
CNG burns much cleaner than gasoline. According to the Environmental Protection Agency, CNG can reduce carbon-monoxide emissions by 90 to 97 percent and nitrogen-oxide emissions by 35 to 60 percent when compared with gasoline. CNG can also potentially reduce non-methane hydrocarbon emissions by 50 to 75 percent, while producing fewer carcinogenic pollutants and little or no particulate matter.

Reducing reliance on foreign oil. Using domestically sourced natural gas reduces reliance on imported oil, as does driving on electric power.