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Frequently Asked Questions
What are NGVs? 
Who’s driving NGVs? 
Are NGVs safe? 
How much do NGVs cost? 
Are NGVs environmentally friendly? 
Are natural gas supplies adequate? 
Is natural gas affordable? 
Is it easy to fuel an NGV? 
Additional resources


What are NGVs?

Natural gas vehicles (NGVs) look like any other vehicle. The difference is that NGVs operate on natural gas as opposed to the fuel we typically pump into our vehicles’ tanks. NGVs typically use one of two varieties of natural gas: compressed natural gas (CNG) or liquefied natural gas (LNG). Dedicated NGVs are equipped to run exclusively on natural gas. Bi-fuel NGVs can run on either natural gas or gasoline. Dual-fuel vehicles run on natural gas and use diesel for ignition assistance.


Who’s driving NGVs?

Basically anyone who’s looking to reduce fuel costs and lower emissions will find NGVs available to meet their specific needs. While increasing numbers of environmentally sensitive consumers are purchasing NGVs, the largest market currently for these types of vehicles are fleets. In fact, 40 percent of buses on order are natural gas vehicles. You’ll also find NGVs among many other types of fleets, including taxi fleets, courier and delivery fleets, government and police fleets, community fleets, and trades and commercial fleets. Consumers and fleets also have the option of converting existing light or heavy-duty gasoline or diesel vehicles to natural gas using certified installers.


Are NGVs safe?

NGVs are as safe as any gasoline-powered vehicle. There are over 11 million NGVs in use around the world, and the safety record is excellent. NGVs meet the same safety standards as gasoline and diesel vehicles and their fuel tanks are strong and puncture resistant.


How much do NGVs cost?

Light-duty NGVs cost from $5,000 to $7,000 more than comparable gasoline vehicles, and heavy-duty NGVs can cost $30,000 or more than comparable diesel vehicles. The price depends on the fuel-tank capacity and whether the vehicle is equipped by the manufacturer or converted to run on natural gas. However, federal and state incentives are available to offset NGV costs.


Are NGVs environmentally friendly?

 NGVs received some of the highest rankings for environmental performance. Using natural gas is one of the best ways to reduce harmful air pollutants. That’s because natural gas burns cleaner than gasoline and other alternative fuels, reducing tailpipe emissions by up to 95 percent. In addition, factory-built NGVs produce emission levels lower than any other fuel except hydrogen.

Environmental benefits of NGVs:

  • Reduces carbon monoxide emissions 70-90 percent 
  • Reduces carbon dioxide emissions 20-30 percent 
  • Reduces nitrogen oxide emissions 75-95 percent 
  • Potentially reduces non-methane hydrocarbon
    emissions 50-75 percent
  • Emits fewer toxic and carcinogenic pollutants
  • Emits little or no particulate matter
  • Eliminates evaporative emissions


Are natural gas supplies adequate?

Domestic reserves of natural gas are estimated to be twice that of petroleum-based upon current consumption – approximately 100 years. And for 14 of the last 16 years, America has added more gas to its reserves than it has produced and used. Worldwide, natural gas reserves are greater than petroleum.


Is natural gas affordable?

Natural gas has been 25-42 percent cheaper than diesel over the last 14 years and natural gas costs, on average, are over one-third less than gasoline at the pump.


Are NGVs easy to fuel?

Yes. CNG (compressed natural gas) vehicles are fueled with easy-to-use, pressure-sealed dispensers. CNG fueling stations can be configured to fuel vehicles at various rates. Time-fill stations fuel parked vehicles overnight, taking advantage of off-peak electricity rates and smaller compression equipment. Fast-fill stations fill vehicles rapidly using larger compression equipment and high-pressure gas-storage systems.

To find natural gas station locations in your area, visit the Alternative Fueling Station Locator.


Additional resources

To find out more about natural gas vehicles, download our fact sheet or contact a CenterPoint Energy NGV Marketing Consultant at 1-877-OPT4GAS.  Additional information can also be found at: NGV America

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