'Work Truck' Takes a Tour of Greenkraft Inc
SANTA ANA, CA – "Work Truck" recently had a chance to tour the Greenkraft Inc. facility in Santa Ana, Calif., and learn more about the company’s operations.


SANTA ANA, CA –Work Truck recently had a chance to tour the Greenkraft Inc. facility in Santa Ana, Calif., and learn more about the company’s operations.
Greenkraft Inc is a manufacturer and distributor of automotive products, including Class 3-7 cab-over trucks, equipped with compressed natural gas (CNG) powertrains. The company also provides CNG conversion systems for vehicles produced by OEMs including Isuzu, GM, Ford, and Chrysler. The company has been around since 2008.
George Gemayel, president of Greenkraft Inc , said he started Greenkraft Inc to provide a complete turnkey alternative-fuel truck solution. “We wanted to provide the whole enchilada,” he said. “We’re not creating a new invention. We’re taking an existing idea and making it better. We’re providing the ultimate end user with a cost-effective truck by using low-cost CNG fuel.”
Gemayel is also the founder of California Environmental Engineering (CEE), which provides engine emissions certification services for a wide-variety of manufacturers and has experience working in emissions certification. CEE has also achieved 40 CFR 1065 compliance, which is required for testing new-model years.
Greenkraft Inc currently imports forward cabin chassis made by JAC from China and uses a GM powertrain for the trucks it manufactures. “We provide the only truck born as a natural gas vehicle in classes 3 to 6,” said Frank Ziegler, director of sales.
All of Greenkraft Inc's trucks are manufactured as dedicated CNG vehicles, therefore qualifying for California Energy Commission buy-down incentives for alternative-fuel vehicles. The incentive available is $20,000 per vehicle. The incentives are based on a first-come, first-serve basis and forwarded directly to the end user in California.
Though Greenkraft Inc has only been around a few years and may be the “new kid on the block,” Ziegler said its solutions have already made an impression on Ryder System Inc., a transportation, logistics and supply chain management solutions provider that’s been around for nearly 80 years. Ryder has added GreenKraft, Inc as an OEM supplier.
Greenkraft Inc recently obtained EPA/Carb certification of its 2013 dedicated-compressed natural (CNG) gas fuel system for 6.0L General Motors engines for 14,000-lb. and above GVWR vehicles.
The company is currently performing research and development testing to certify its 8.8L CNG engine. “It’s a great repower opportunity for dirty diesels, gensets, school bus, refuse, and port trucks,” Gemayel said.
On the electrification side, Greenkraft Inc is developing an extended-range battery-engine CNG truck, and expects it to achieve 35-40 mpg city/highway combined. Greenkraft Inc will attract fleets in California, Ziegler said.
In addition, on CNG conversions, Greenkraft Inc can also help fleets achieve certification for 50 or more of the same vehicle models, Ziegler said.
By Grace Suizo
More Operations

Top 50 Executive Fleets
It is that time of year again! Time for the 2026 list of the Top 50 Executive Fleets, presented by Automotive Fleet and Volvo as part of its annual Fleet 500. Download now to see this year's list of companies!
Read More →
Behind the Scenes: Building the Ringmaster of the Road from Body to Paint Part 2
The body is built, the paint is on, and Team Fletcher’s Soap Box Derby car is nearly ready for testing ahead of race day in Akron.
Read More →
It's All Downhill from Here! Fleet Industry Raises $22,000 for Skilled Trades Scholarships
Work Truck’s Lauren Fletcher and Automotive Fleet’s Chris Brown turned a friendly racing rivalry into $22,000 for automotive technology and skilled trades scholarships.
Read More →
Fleet Confidence, Safety, and Smarter Risk Management Lead This Month
This month’s TruckChat: Top Monthly News Recap explores what it takes to build confidence across a fleet, from stronger leadership and technician support to better safety preparation, smarter use of telematics, and clearer plans for when something goes wrong.
Read More →From Fleet Operator to OEM Leader: Tina Kourakos’ Career Lessons
Tina Kourakos shares the lessons, relationships, and career pivots that shaped more than 30 years in fleet, plus the advice every new fleet manager should hear.
Read More →
WEX Brings Standard Fleet's Connected Vehicle Platform to Fleet Customers
This week’s product launch with Standard Fleet’s connected vehicle platform reflects WEX Venture Capital's strategy of turning startup innovation into customer solutions. Standard Fleet is now available to WEX fleet customers.
Read More →Meet Atlas: Motive's AI Assistant for Fleets
Artificial intelligence is becoming a practical tool for fleet operations. In this video, Emily Parsons introduces Atlas, Motive's AI-powered assistant that combines conversational search with the ability to perform actions across the Motive platform.
Read More →The Top 300 Commercial Fleets
The Top 300 Commercial Fleets: See the List
Read More →
NTEA Releases Updated Federal Excise Tax Guide for the Work Truck Industry
NTEA’s latest revised edition of its Federal Excise Tax Guide for the Work Truck Industry is now available to help fleet leaders navigate complex federal tax requirements.
Read More →
Super Dispatch Powers Centralized Vehicle Transport Operations for Merchants Fleet
Merchants Fleet has replaced fragmented transportation processes with Super Dispatch’s unified, API-powered platform to improve visibility, automation, and carrier performance.
Read More →
