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Got this PR from the CNG tank supplier, it mentions two manufacturers. KW has already been identified as one manufacturer, likely Mack is the other.

Quantum Technologies Provides Fuel Systems to UPS for 319 CNG Heavy Duty Trucks

Quantum has received an order from UPS for 319 fuel systems for UPS' heavy duty CNG vehicle program. The issuance of purchase orders will be coordinated through two OEMs and their installation partners.


The delivery dates under this award are scheduled to begin in mid- 2015 and will include the recently released versions of Quantum's Q-CabLITE and Q-RailLITE storage systems, as well as delivery in the September time-frame of a version of Quantum's soon to be released next-generation, innovative back-of-cab storage system providing the highest storage capacity of any back-of-cab CNG system currently available in the industry. These new systems will offer unparalleled light weight technology which includes Quantum's industry leading Q-Lite® CNG storage tanks.


"UPS is a leading force and participant in natural gas vehicle adoption and fleet operation in the United States and Quantum is proud to be able to support them in advancing their natural gas vehicle programs with a lower cost, domestic fuel - natural gas," said Mr. Brian Olson, President and CEO of Quantum. "We are excited to be working alongside and supporting UPS on this exciting program and the unveiling of our next-generation back-of-cab storage system technology," concluded Mr. Olson.

I can understand CNG in the package car application*, however LNG is better than CNG in a tractor application (http://www.agilityfuelsystems.com/lng-vs-cng.html).

UPS's issue with LNG is that CNG is taxed on a per GGE (Gasoline Gallon Equivalent) basis, while LNG is taxed on a per liquid gallon basis.

When both are converted to diesel gallon energy equivalents, CNG is fairly taxed but LNG is not.

LNG has a tax rate of approximately 41 cents per gallon, while CNG has a 24 cents per gallon tax rate.

The 17 cent disadvantage to using LNG users is ridiculous. Washington claims they want to promote clean air, and yet they make LNG truck operators pay more.

UPS has also ordered 445 model 160 DGE behind-the-cab CNG fuel systems from Agility Fuel Systems (http://www.agilityfuelsystems.com/behind-the-cab.html). Back in the day, UPS used to save money by standardizing to a large degree. But with their natural gas equipment, they have created a maintenance director's nightmare by ordering a bit of everything under the sun. It would be more cost effective to simply standardize on the LNG Cummins-Westport ISX12G.

* Freightliner Custom Chassis (Morgan Olson bodies) powered by GM 6.0-liter Vortec V-8 engines converted with Landi Renzo CNG systems.

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