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Alternative Fuels Station Locator


Unlike gasoline or diesel stations, compressed natural gas (CNG) stations are not “one size fits all.”  Building a CNG station for a retail application or a fleet requires calculating the right combination of pressure and storage needed for the types of vehicles being fueled.  Making the right choices about the size of compressor and the amount of storage at the station makes a big difference in the cost of fuel and range for vehicles.

Ensuring a Full Fill

Unlike liquid fuel, which consistently holds about the same volume of fuel across a broad range of conditions, gas can expand and contract significantly depending on the gas pressure and the temperature.  For example, under industry standard conditions, a tank on a vehicle may be able to hold 20 gasoline gallon equivalents, but on a hot day the gas will expand and the tank may only fill to 75% (or less) of its potential. The goal is to get as full of a fill as possible into the vehicle’s tank.

The amount of CNG that can be stored onboard varies based upon the pressure rating of the fuel system, the ambient temperature, and the fueling rate.

Types of Stations

There are two types of CNG fueling stations: time-fill and fast-fill. The main structural differences between the two systems are the amount of storage capacity available and the size of the compressor.  These factors determine the amount of fuel dispensed and time it takes for CNG to be delivered.