Incentive programs will be listed here by national and state availability.

National:
United States (Federal) Incentives and Laws
Smartway Financing for Anti-Idling devices
Incentive Funding Opportunities For On-Road Diesel Vehicles- http://www.arb.ca.ROv/msproR/onrdiesel/documents/truckrule%20lncentiveFu...

Pending: End-of-Year Legislation Provides Tax Breaks for Anti-Idling Devices
U.S. Department of Energy (DOE)-Efficient and Clean Energy Loan Guarantees

State:
California- California Natural Gas Laws and Incentives
-TRU Compliance- Financing for Transport Refrigeration Units
New York- State & Federal Incentives & Laws