Canadian Consulting Engineer

Generac to expand its bi-fuel system offering

December 3, 2013
By Canadian Consulting Engineer

Nov 11 2013
Only EPA factory-compliant bi-fuel system will have standardized engines, other improvements

Generac’s Bi-Fuel™ generators, which run on both diesel fuel and natural gas simultaneously, are noted for their reliability in many applications. As a result of this popularity, Generac’s 600 kW Bi-Fuel power system—the only EPA factory-compliant bi-fuel system on the market—will soon expand to include 400 kW and 500 kW power nodes. Standardized engines and other improvements will accompany this expansion. Generac Bi-Fuel generators use diesel as a pilot fuel to ignite the natural gas, eventually running primarily on natural gas (typically 70%), but they are also able to run on diesel fuel alone as conventional diesel generators typically operate. The natural gas provides extended running times not available on diesel-only generators. It also allows for reduced on-site diesel fuel storage, which means a smaller footprint and reduced diesel fuel maintenance. “Generac is expanding its Bi-Fuel product family to provide more flexibility and scalability in all applications” said Rich Thompson, director of marketing, Generac Industrial Power. “They can be used either as single-engine solutions or connected in parallel as part of a Generac modular power system [MPS] for even more redundancy and reliability in mission-critical applications.” The expanded Bi-Fuel family will utilize many of the current and time-tested gas train components, as well as the existing control system, and will be available with all current configurable options.  However, upgrades in the frame, gas flow sensors, controls module and flex hose connections will further improve on the quality and reliability that customers have come to expect from Generac Bi-Fuel generators. Additionally, all Generac Bi-Fuel generators will now feature Perkins® engines. This follows the company’s announcement last December of its intention to standardize on the electronically controlled Perkins diesel engines. Generac made this decision because of the reputation Perkins engines have for reliability, performing productively through high power density, providing improved engine performance, and delivering a lower ownership cost due to minimal maintenance and downtime. “Adding the Perkins 18.1L engine to our 600 kW Bi-Fuel unit was the next step in the engine standardization process,” said Rich Thompson, director of marketing, Generac Industrial Power. “The new 400 kW and 500 kW power nodes with Perkins 12.5 and 15.2L engines will continue this process while offering our customers a best-in-class ownership experience.” The Generac Bi-Fuel systems are the only EPA factory-compliant bi-fuel generators. All other competitive bi-fuel units are either provided by third parties or retrofitted in the field. Generac Bi-Fuel generators will also continue to comply with all regulations and listings, and will offer 180 mph wind load and seismic certification. Preinstalled enclosures will improve installation time and operator efficiency. Finally, an aesthetically designed exhaust hood that mounts to the silencer system reduces sound levels more than ever before and minimizes any environmental effects on system operations. Generac’s 500 kW Bi-Fuel generator is currently available, with the 400 kW unit targeted for availability in the first half of 2014.

About Generac (NYSE: GNRC) Since 1959, Generac has been a leading designer and manufacturer of a wide range of generators, transfer switches, and engine powered products serving residential, light commercial, industrial and construction markets.  Under the Generac Industrial Power brand, the company offers diesel- and gaseous-fueled generator systems up to 9 megawatts. These include Generac’s Bi-Fuel™ system for dramatic cost savings, the Generac Modular Power System (MPS) for exceptional reliability and scalability, the Gemini Twin Pack system for serious space-saving requirements, and Generac Mobile Power for reliable mobile backup power in even the most extreme conditions. All are available through a broad network of industrial dealers. For more information on Generac and its industrial product line, please visit Follow Generac on Twitter @generac. Become a fan on Facebook at


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