- UQM Technologies
- Design and development of electric and hybrid-electric vehicle propulsion systems and electrical components. - Green Star Products
- A holding company with various equity positions in energy and transportation technology companies. - Alternative Fuel Systems Inc. (AFS)
- Emission reduction technologies including natural gas and natural gas/diesel systems and components plus catalytic converter technologies. - Green Car Group
- Offers marketing and communications services and independent research through its nonprofit institute. - Natural Gas Vehicle Institute.
- Provides natural gas vehicle education, training, consulting, and technical assistance to vehicle manufacturers, fuel retailers, utilities, NGV users, consultants, and others. - Eneco
- Design, development, and manufacturing company offering innovative solutions for zero and low carbon emission systems.
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