Natural gas has emerged as a leading alternative to petroleum derived fuels. In most markets, the commodity price of natural gas is well below diesel fuel on a cost per energy unit basis. The EVO-SP System has been specifically designed to allow operators of stationary engines to take advantage of this price differential in a safe and efficient manner.

Savings Example: 1000 KW Electric Generator

Operational savings are generated by the EVO-SP System replacing diesel fuel with natural gas on an energy equivalent basis. Using a 1000 KW electric generator as an example, the typical diesel fuel consumption would be approximately 70 gallons per hour or 9.1 MMBtu per hour. Assuming a diesel cost of $3.50 per gallon or $26.9 per MMBtu, the annual diesel cost would be ~$1.96 million based on 8,000 operating hours.

Using the EVO-SP System on this same generator, assuming a 60% displacement of diesel with gas, the diesel fuel consumption would decrease to approximately 28 gallons per hour or 3.64MMBtu. The EVO-SP System would replace 42 gallons of diesel per hour with approximately 5,460 standard cubic feet of natural gas or 5.46MMBtu. Note that the total energy consumption (natural gas + diesel fuel) has remained constant at 9.1MMBtu. Assuming a natural gas cost of $10 per MMBtu, the annual NG+D cost be $1,288,000.

In the above scenario, the EVO-SP System would generate annual savings of $732,000

Significantly Extend the Run Time of Critical Emergency Standby Power Systems

Stand-by diesel generators are typically restricted to brief periods of continuous operation as governed by the size of their fuel storage tanks. While highly useful for intermittent power losses, their utility is substantially diminished during extended power failures as a long duration outage can exceed a generator’s fuel storage capacity. The EVO-SP System provides significant increases in generator runtime using pipeline-supplied natural gas as a substitute for limited onsite diesel fuel.

The EVO-SP System has been designed to ensure that converted generators meet the most demanding stand-by power requirements including NFPA 110. The SP System can be utilized on single generators as well as multiple generators operating in parallel stand-by service. In the event that natural gas service is interrupted, the SP System reverts the emergency generator to 100% diesel mode without loss of engine speed or generator frequency.

Extended Runtime Example: 1000 KW Generator

A 1000 KW emergency generator would typically consume 70 gallons per hour of diesel fuel. Assuming an onsite diesel storage capacity of 2,000 gallons, the generator would be able to operate for approximately 28 hours on a continuous basis.

Using the EVO-SP System on this same emergency generator, assuming a 60% displacement of diesel with gas, the diesel fuel consumption would be decreased to approximately 28 gallons per hour. The EVO-SP System would replace 42 gallons of diesel fuel with approximately 5,460 standard cubic feet of pipeline-supplied natural gas.

In the above scenario, the EVO-SP System would extend generator runtime from 28 hours to over 71 hours.

Please use the calculator below to see how EVO NG+D technology can dramatically extend the runtime of your emergency power system: