The Zero-Emission Technology Inventory (ZETI) tool is an interactive online resource to establish a current and shared knowledge base for worldwide commercially available offerings of zero-emission medium- and heavy-duty vehicles (MHDVs). The tool aims to provide fleets and governments with comprehensive information including regions where zero-emission brands are available for purchase, and the timeline over which additional models are expected to become available. Commercial availability is defined as availability for immediate production based on placed orders.

ZETI is a work in progress and will be continuously updated. Because ZETI is based on the best available data and might not accurately reflect the most recent model offerings, we would greatly appreciate your assistance in making this tool more comprehensive, accurate and robust. If you have feedback, please complete the form below or email us at


To reference the current version of ZETI, please use:

CALSTART (2020): Drive to Zero’s Zero-emission Technology Inventory (ZETI) Tool Version 5.5. Available online at


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