Compressed Natural Gas (CNG) & Liquefied Natural Gas (LNG)

 

Natural Gas Transportation Fuel Infrastructure in New Mexico- Currently, 14 compressed natural gas (CNG) operate in New Mexico – 7 are private and 7 are public access. One station includes Liquefied Natural Gas (LNG).  These stations are listed below. In addition, three new stations are in development in Albuquerque, Farmington and Lordsburg.

Compressed Natural Gas Fueling Stations - Public

  • Clean Energy, University of New Mexico –  1140 University Blvd NE, Albuquerque
  • LCNG Clean Energy, Pilot/Flying J –  9911 Avalon Road NW, Albuquerque
  • Clean Energy, Albuquerque Sunport –  2200 Sunport Blvd SE, Albuquerque
  • City of Deming – 116 N 8th St, DemingABQ CNG Filling Station
  • City of Deming – 1315 W Pine St, Deming
  • Clean Energy, Santa Fe Trails Transit – 2931 Rufina St, Santa Fe
  • City of Socorro – 3000 Old US Highway 85, Socorro

Compressed Natural Gas Fueling Stations – Private or Fleet Only

  • Clean Energy – ABQ Ride, 601 Yale St, Albuquerque
  • City of Albuquerque – 1801 4th St, Albuquerque
  • Apache Artesia – 1945 Bluestem Road, Artesia
  • Apache Eunice – 31 S NM Highway 207, Eunice
  • Apache Hobbs – 2350 W Marland Blvd, Hobbs
  • City of Deming, Construction Shop – 1401 Santa Clara St, Deming
  • City of Deming, Transfer Station – 5470 New Mexico 549 SE, Deming

Background
Natural gas is a domestic fuel produced either from gas wells or in conjunction with crude oil production. It is a mixture of hydrocarbons—primarily methane (CH4)—and is widely available through utility distribution infrastructure.

Santa Fe Trails Compressed Natural Gas BusThe interest in natural gas as an alternative transportation fuel stems mainly from its clean burning qualities, its domestic resource base, and its commercial availability to end-users. Because of the gaseous nature of this fuel, it must be stored onboard a vehicle in either a compressed gaseous state (CNG) or in a liquefied state (LNG).

Compressed Natural Gas (CNG)
CNG is produced by compressing natural gas to less than 1% of its volume at standard atmospheric pressure. To provide adequate driving range, CNG is stored onboard a vehicle in thick-walled steel, aluminum, or composite tanks at a pressure of 3,000 to 3,600 pounds per square inch (psi).

CNG is sold in units of gasoline gallon equivalent (GGE) based on the energy content of a gallon of gasoline. A GGE equals about 5.66 pounds of CNG. A CNG-powered vehicle gets about the same fuel economy as a conventional gasoline vehicle on a GGE basis.

CNG is used in light-duty (e.g., sedans), medium-duty (e.g., delivery vans), and heavy-duty (e.g., transit buses) vehicles. A popular application for CNG vehicles is in high-mileage, centrally fueled fleets that operate within a limited area.

Liquefied Natural Gas (LNG)
LNG is produced by purifying natural gas and super-cooling it to -260°F to turn it into a liquid. LNG must be kept at cold temperatures and is stored in double-walled, vacuum-insulated pressure vessels.

LNG is sold in units of GGE or diesel gallon equivalent (DGE), based on the energy content of a gallon of gasoline or diesel. A GGE equals about 1.5 gallons of LNG; a DGE equals about 1.68 gallons of LNG.

Liquid is more dense than gas, therefore, more energy can be stored by volume in a given tank of LNG, and LNG is often preferred over CNG for medium- and heavy-duty vehicles that require longer ranges. LNG is typically the natural gas fueling choice for "Class 8" vehicles that range from 33,000–80,000 pounds gross vehicle weight.

Benefits of Using Natural Gas Fuels in Transportation
The primary advantages of using natural gas as a transportation fuel are emissions reductions and energy security benefits. Natural gas is generally cleaner burning than gasoline or diesel fuel: natural gas vehicles show an average reduction in ozone-forming emissions compared to gasoline vehicles and produce fewer lifecycle greenhouse gas emissions than gasoline or diesel vehicles.

In addition, there are abundant natural gas reserves across the United States, including in New Mexico, and it is produced at a relatively low cost. The use of natural gas in transportation applications bolsters the country’s energy security by offsetting the use of oil, which is often imported from politically volatile countries.

Natural Gas Vehicles
A natural gas vehicle (NGV) is similar to a gasoline or diesel vehicle in power, acceleration, and speed. The driving range of NGVs is generally less than comparable gasoline or diesel vehicles, because gasoline and diesel fuels are more energy dense and therefore can store more energy than natural gas fuel in the same size tank. Extra natural gas storage tanks or the use of LNG can help increase range for larger NGVs.

CNG VehicleThere are approximately 150,000 natural gas vehicles operating in the U.S. today and over 15 million worldwide. A number of different manufacturers produce light, medium, and heavy duty NGVs. Most of these vehicles are either dedicated (only natural gas) or bi-fuel (two separate fueling systems that can run on either natural gas or gasoline) models. Qualified system retrofitters can also reliably convert gasoline or diesel vehicles for natural gas operation.

 

 

Additional Information
Alternative Fuels Data Center – Natural Gas (U.S. DOE)
Alternative Fuel and Advanced Vehicle Search (U.S. DOE)

 
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