Automotive Fleet
MenuMENU
SearchSEARCH

GreenMan Subsidiary Signs Agreement with Casella Waste Systems Inc. to Test CNG/Diesel Dual Fuel Upgrade on Refuse Trucks

CARLISLE, IOWA - American Power Group Inc., has signed an EPA Test Vehicle Agreement with Casella Waste Systems Inc., to convert one of its refuse trucks to APG's dual fuel system and begin on-the-road test trials and emission compliance approval.

by Staff
January 19, 2011
4 min to read


CARLISLE, IOWA - GreenMan Technologies, Inc. announced Jan. 18 that its American Power Group Inc. (APG) subsidiary has signed an EPA Test Vehicle Agreement with Casella Waste Systems Inc., to convert one of its refuse trucks to APG's dual fuel system and begin on-the-road test trials and emission compliance approval. APG recently became the first company in the U.S. to receive a Vehicular Memorandum of Exemption from the United States Environmental Protection Agency (EPA) allowing public highway access for the testing and verification of APG's unique non-invasive dual fuel upgrade system on aftermarket diesel truck and tractor engines.

Casella Waste Systems, Inc. is an integrated regional solid waste services company that provides collection, transfer, disposal, recycling, and resource management services to residential, industrial, and commercial customers, throughout the eastern United States. The company owns or operates 31 solid waste collection operations, 30 transfer stations, and 34 recycling facilities supported by a fleet of more than 1,000 vehicles.

Ad Loading...

APG's dual fuel system converts diesel engines and diesel generators to function more efficiently and at a lower operating cost (net fuel cost savings of 25- 35 percent) by seamlessly displacing 40-70 percent of the normal diesel fuel consumption with CNG, LNG, or bio-methane. APG's system is non-invasive to the OEM engine and operates within all OEM performance controls with the flexibility to return to 100 percent diesel operation at any time. APG's dual fuel conversion and emissions reduction systems can help users achieve their sustainability goals through lower carbon monoxide, nitrogen oxide, and particulate matter emissions. In addition, the introduction of natural gas through APG's dual fuel system does not impact diesel engine power or pulling torque and will assist in extending the engine's oil life as natural gas is a cleaner burning fuel compared to diesel.

The EPA test exemptions will allow APG to gather critical engine performance and emission data on a pre-dual fuel and post-dual fuel basis to support EPA approval requirements and commence commercialization of their non-invasive dual fuel upgrade system in the United States. The initial vehicle to be tested for Casella Waste Systems Inc. will be a 2003 DT530 8.6L/275hp International refuse truck.

Lyle Jensen, GreenMan's president and chief executive officer, commented, "We are pleased to initiate test trials with Casella Waste Systems, Inc., the 10th largest solid waste company in the United States according to Waste Age magazine's 2010 Waste Age 100. We believe the aftermarket refuse industry will be a large addressed market for effective diesel fuel and diesel emission reduction technologies and this testing is a vital step in APG's move towards commercializing our dual fuel technology."

John W. Casella, chairman and chief executive officer of Casella Waste Systems stated, "We recognize that our industry is evolving towards a model that rewards an approach to resource renewal and sustainability. This includes, for us, developing a 'greener' fleet as we work towards reducing our diesel emissions ten percent by 2013. To get there, we are using innovation to rethink every aspect of our business and we look forward to working with American Power Group to test and determine the utilization of their alternative fuel technology in the Casella fleet network."

About GreenMan Technologies
GreenMan Technologies, through its subsidiaries, provides technological processes and unique marketing programs for alternative energy, renewable fuels and innovative recycled products. The Company's alternative energy subsidiaries, American Power Group, Inc. (APG) and APG International, Inc. (APGI) provide a cost-effective patented dual fuel technology for diesel engines. APG's dual fuel alternative energy system is a unique external fuel delivery enhancement system that converts existing diesel engines into more efficient and environmentally friendly engines that have the flexibility to run on: 1) diesel fuel and compressed natural gas ("CNG"); 2) diesel fuel and bio-methane, or 3) 100% diesel fuel depending on the circumstances. The proprietary technology seamlessly displaces up to 65% of the normal diesel fuel consumption with CNG or bio-methane and the energized fuel balance between the two fuels is maintained with a patented control system ensuring the engines operate to Original Equipment Manufacturers' ("OEM") specified temperatures and pressures with no loss of horsepower. Installation requires no engine modification unlike the more expensive high-pressure alternative fuel systems in the market. Our Green Tech Products, Inc. subsidiary, develops and markets branded products and services that provide schools and other political subdivisions viable solutions for safety, compliance, and accessibility including recycled surfacing. See additional information at: www.greenman.biz., www.americanpowergroupinc.com, and www.playgroundcompliance.com.

More Green Fleet

Sketch of chassis cab truck.
Green Fleetby Chris BrownMarch 9, 2026

Startup ZMD Motors Developing Electric Conversion for Ram 5500 Work Trucks

Detroit-based company says it has begun early development of a system to convert internal combustion Ram 5500 chassis-cab trucks to electric power.

Read More →
SponsoredFebruary 26, 2026

MOVING ON FROM DEBATE: A Guide for Fleet Managers Who Just Want To Get Electrification Done

Fleet managers are done with the debate—and focused on execution. Learn how to build a practical electrification strategy that aligns infrastructure, operations, and financing while keeping costs controlled and deployment scalable with support from Blink Charging. Discover how smart planning today positions fleets for long-term performance and ROI.

Read More →
EV charging symbol
Green Fleetby Chris BrownFebruary 12, 2026

U.S. EV Adoption Is Climbing, but Commercial and Passenger Markets Diverge

New industry group data revealed that light-duty electric vehicle sales are hitting record market share and volumes, while commercial EV volume dipped. What’s driving the fluctuations?

Read More →
Ad Loading...
SponsoredFebruary 6, 2026

Hybrids: Electrification Without the Challenges

For fleet managers, fuel is one of the biggest line items in the budget — and it's one hybrids can shrink without changing how your people work. Download the eBook to see the numbers, understand the technology, and get a step-by-step guide to making the switch.

Read More →
A side view of the yellow, blue, and red Slate Auto electric pick-up truck and SUV
Upfittingby Martin RomjueDecember 8, 2025

How To Upfit Electric Work Trucks and Vans

The biggest challenge lies in balancing additional equipment and accessories with EV battery capacity and range.

Read More →
Green Fleetby Martin RomjueDecember 4, 2025

How Fleets Can Adjust Approaches To EV Adoption

With the expiration of federal incentives, EV success now hinges less on government policy and more on discounts, battery tech progress, increased range, and broader infrastructure.

Read More →
Ad Loading...
Panelists on stage at FFC.
Fleet Forwardby Martin RomjueOctober 29, 2025

Despite World Troubles, Forward Thinking Guides Fleets

Fleet operators shared their challenges during an annual conference that embraced the latest advances across all aspects of running private- and public-sector vehicles.

Read More →
Illustration of GM Energy’s vehicle-to-home system showing an electric truck connected to home power storage, the grid, and GM Energy Cloud through the myOwner app.
Green Fleetby News/Media ReleaseOctober 28, 2025

GM Energy Details Partnerships and Targets for Public Charging Build-Out

EVgo, Pilot, ChargePoint and IONNA named; goal is 35k GM-invested DC stalls by 2030, with customer-experience upgrades at sites.

Read More →
Chart showing September 2025 EV sales. New EV sales totaled 147,716 units, up 44% year over year, and used EV sales hit 40,569 units, up 76%, marking strong third-quarter performance.
Green Fleetby News/Media ReleaseOctober 23, 2025

Q3 Electric Vehicles Sales Hit Record High

EV buyers took advantage of the final federal tax credit days, while average prices edged up for new EVs and continued to decline for used models.

Read More →
Ad Loading...
A green vertical bar graph chart showing the rises and dips in quarterly EV sales since early 2022.
Green Fleetby News/Media ReleaseOctober 10, 2025

EV Sales Hit Record in Q3 Before Incentives Expire

But most OEMs record low-volume sales, which means EV profitability remains a distant dream for nearly every automaker.

Read More →