Why Natural Gas?
Agility Fuel Solutions enables a lower priced, more environmentally friendly fuel source that has a proven track record of success and reliability.

Saddle Creek Transportation: A Case for Natural Gas as a Transportation Fuel

Saddle Creek Transportation has enjoyed the benefits of natural gas as a transportation fuel for over two -and- a -half years, and are continuing to increase their number of natural gas powered trucks. Watch our latest video to find out why they are so excited about their natural gas program.

Go Lean and Green with Natural Gas


Less volatile fuel prices, creates long-term cost benefits over diesel 

State and Local Government programs may provide incentives in your area to offset costs


Eliminates need for all diesel exhaust treatment systems

20%-25% GHG reduction

Almost no particulates

Substantial reduction in VOCs, SO2 and NOx

No smell or smoke and quieter than diesel


Proven, safe and reliable technology

Vehicles, equipment and fuel all readily available

Thousands of vehicles already on the road logging miles and savings

Natural Gas Fuels: CNG & LNG
There are two primary types of commonly available natural gas fuel, compressed (CNG) and liquefied (LNG). Both are viable fuel sources for heavy duty vehicles. Depending on the end-users' requirements, either form may be the most suitable.
Agility Fuel Solutions is the primary fuel system supplier to most of the leading domestic OEMs and natural gas fleets. We are experienced with both CNG and LNG fuel systems, and provide a complete end-to-end product offering from the analysis and design phase through after-market service and warranty support for both fuel types.
  • Physical Form: Gas stored at high pressure at 3,600 psi
  • Volume vs Diesel: 4x
  • Cost: Lower cost to produce and store
  • Refueling: Easy
  • System Pressure: 60 - 4,500 psi
  • Hold Time: Unlimited (no fuel loss)
  • Storage: Carbon fiber wrapped cylinders
  • Conclusions: New, lightweight large capacity CNG tanks enable long-haul trucking applications.
Agility FS Truck
Freightliner with behind the cab installation shown above.
CNG Conversion Formulas
Pounds of CNG Fuel Lbs. of CNG @ 3,600 PSI = Water Volume (cu. in.) multiplied by 0.0079
Lbs. of CNG @ 3,000 PSI = Water Volume (cu. in.) multiplied by 0.0069
Standard Cubic Feet (SCF) SCF @ 70°F and 3,600 PSI = Water Volume (cu. in.) divided by 5.861
SCF @ 70°F and 3,000 PSI = Water Volume (cu. in.) divided by 6.657
Diesel/Gasoline Gallon Equivalents Gasoline Gallon Equivalent (GGE) = SCF of Natural Gas divided by 123
Diesel Gallon Equivalent (DGE) = SCF of Natural Gas divided by 139
  • Physical Form: Liquid produced cryogenically at -260F
  • Volume vs Diesel: 2x
  • Cost: Higher cost to process, liquefy and store
  • Refueling: Requires special handling equipment
  • System Pressure: 60 - 230 psi
  • Hold Time: Limited (fuel will vent if not used)
  • Storage: Vacuum-insulated stainless steel tanks
  • Conclusions: LNG's high energy density makes it relevant to trucking and off-road applications where space is at a premium.
Truck with LNG Side Mount
LNG Pressure - Temperature - Density
Pressure (PSI)Temperature (F)Density (Lbs/Gal.)
0 -259 3.54
50 -230 3.29
100 -200 3.11
150 -186 2.97
200 -175 2.85
250 -167 2.76
300 -158 2.68
350 -150 2.60