University of California, Riverside

Center for Environmental Research & Technology

AB 118: Hybrid Off-Road Equipment Pilot Project


Air Quality Improvement Program

The California Air Resources Board (CARB) has awarded the Emissions and Fuels Research Group a $2 million grant to evaluate the emission reduction benefits of hybrid technology for heavy-duty off-road construction vehicles.

This is part of a larger effort by CARB to expand the use of hybrid technology to help meet the goals of AB 118 -- to accelerate development and deployment of the next generation of clean air technologies. The use of hybrid-electric technology in heavy-duty on- and off-road vehicles is at a very early stage of development. Through the recent Hybrid Truck and Bus Voucher Incentive Project (HVIP) more than 650 hybrid trucks and buses have been deployed.

Hybrid technology can provide fuel efficiency benefits of 5 to 20 percent, and potential emission reductions between 25-70 percent. Little is known about the potential benefits of hybrid technologies for construction equipment because of their unique and diverse duty cycles when used in real world applications. The behavior of hybrid equipment, like excavators and bulldozers, will be characterized on a second by second basis, during in-use operations at construction sites. This includes measurements of vehicles’ emissions using Portable Emissions Measurement Systems, and to measure their “activity.”

Previous work at the Center has shown that activity data and emissions data profiles are quite different for various actions, such as digging, lifting, rotating, pushing, moving and transporting materials.

The project will help establish the methodology for making comparisons under such varied conditions. The project will also consider the differences between emerging hybrid implementations by leading manufacturers.

The project may be useful in establishing future inventories -- data which could contribute to a basis for hybrid incentives under AB 118 programs.


AB 118: Hybrid Off-Road Equipment Pilot Project -- Hybrid Deployment and Testing Evaluation


Implementation Manual 



As of 06/25/2012 $55,578 funds are available*

Vouchers Reserved
Caterpillar D7E
Komatsu HB215LC-1

 *Total dollars are on a first-come, first-served basis where funds are only available for the Komatsu HB215LC-1 and Caterpillar D7E commercially available hybrid construction equipment. Under no circumstances shall the total project funding for equipment deployment exceed the $901,578 budgeted.


Project Request Forms

Dealership Agreement Terms

Equipment Inspection Form

Equipment Purchaser Terms and Conditions

Voucher Request Form

Voucher Redemption Checklist

Purchase Voucher




More Information 

General Campus Information

University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

Center Information

Center for Environmental Research & Technology
1084 Columbia Avenue
Riverside, CA 92507
Directions to CERT

Tel: (951) 781-5791
Fax: (951) 781-5790

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