Natural gas is a by-product of oil drilling and coal mining, but it can also be harvested independently from natural gas fields.
It can be used as a motor fuel in 2 forms: compressed natural gas (CNG) and liquefied natural gas (LNG). LNG is used mostly for heavy-duty trucks and buses and also for fleet usage. Cars and light trucks are available as a special order from manufacturers or standard gasoline vehicles can be converted.
To extend their range, vehicles can be set up as bi-fuel (two independent fuel systems) to conveniently operate on either gasoline or natural gas. A real plus—if natural gas is available where you live, a filling station can be outfitted right in your garage for convenient at home refueling.
Pros: A Yes Vote
- Home fueling station: Outfit your garage with a filling station compressor (where natural gas supplies are available).
- Abundant: The United States has vast natural gas reserves.
- Clean burning: Natural gas reduces ozone-forming emissions.
- Conversions available: Retrofit CNG and LNG kits are available to convert your own car. Find out what’s available.
Cons: What to be Aware of
- Fuel station availability: Long distance travel requires planning for fuel availability.
- Depending upon the state of engine tune, hydrocarbon emissions may be increased.
- Pressured tanks are necessary to store the gas.
- Natural gas is not renewable and is already in great demand.
Safety & Handling
Both CNG and LNG require pressurized tanks are able to withstand automotive environmental exposure. LNG is a cryogenic fuel (extremely cold), and it requires special equipment and handling. The tanks also require periodic inspection and certification.
Potential
Outlook is limited. Demand for natural gas is already high and large-scale production would require major retooling of filling station infrastructure. Although there are thousands of CNG filling stations across the United States, with the most in California, LNG is not as readily available.
Learn More: Natural Gas 101Find a Natural Gas Vehicle
The Alternative Fuel Bible: Find Answers to Your Fuel & Vehicle Questions