This annual report series tracks zero-emission bus deployment across the United States and Canada, providing comprehensive inventory data on transit bus electrification. The 2024 report shows 6,147 full-size transit ZEBs in the U.S. as of September 2023, representing 12% growth. Key findings include growing adoption of fuel cell electric buses (76% increase in 2023), expanding small bus deployment for microtransit services, and detailed state-by-state analysis. California leads with 1,946 ZEBs (32% of national total), while the Metropolitan Transportation Authority in New York operates the largest single fleet with 545 buses.


