2024 State of Sustainable Fleets Market Brief

Industry Rises to Meet Peak Complexity with Unprecedented Innovation and Investment 

Five years of assessing the State of Sustainable Fleets has revealed a clear reality: Clean technology is here to stay. Each passing year has brought new milestones and developments, firmly establishing clean vehicle technologies as more than just a passing trend.

A slew of new emissions regulations that were adopted in the past two years combined with the growing pains of new technology spotlight a period of peak complexity for fleet operators. Expanded supply of renewable fuels offer answers today while advancements to address charging and larger near-zero engines lay groundwork for future sustainable fleet expansion.

2024 Key Findings

Confusion in the Wake of New Emissions and ZEV Regulations Expected to Persist

Diesel Vehicle Sales Rise Ahead of Regulatory Changes, Renewable Diesel Supply Continues Surge

RNG Leads Growth in Natural Gas Sector, CNG Maintains Cost Competitiveness

Medium-Duty Battery-Electric Vehicle Deployments Double While Infrastructure Challenges Intensify

Regional Hubs and Vehicle Availability Push Hydrogen Economy Forward Despite Significant Cost and Infrastructure Hurdles

2024 Market Brief

Our yearly summary of major developments and fleet insights in sustainable commercial transportation and alternative fuels.


Fleet Mini Guides

Short guide for fleets on starting out with electric, natural gas, hydrogen and propane vehicles and renewable fuels

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Trend Briefs

Succinct updates on key trends influencing sustainable fleet adoption such as policy, funding, autonomous vehicles.

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2024 Key Findings

Summary of the most important developments in renewable fuels and battery electric, natural gas, hydrogen, and propane vehicles.

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Fleet Education Webinars

Hear from fleet leaders and their partners on their outlook for and experience with sustainable technologies.

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ACT Expo 2022


Recent media coverage of the State of Sustainable Fleets project.

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Access all of the content from The State of Sustainable Fleets webinar series.

2023 Launch of State of Sustainable Fleets: ACT Expo Mainstage Session

Learn from the latest research and trends that shaped the 2023 State of Sustainable Fleets report with deep sector-specific insights into the adoption of natural gas, propane, battery electric, and hydrogen fuel cell electric vehicles, against a baseline of diesel and gasoline vehicles.

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Small and Medium Fleets: Transitioning to Clean Vehicles & Fuels

Learn how small and medium fleets innovate with sustainable technologies, overcome challenges, and capture the benefits of advanced clean vehicles and renewable fuels.

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Transitioning to a Truly Sustainable Fleet

Hear from experts in sustainable fleet technology on how to plan for and integrate your first, second, and tenth new type of clean vehicle technology to improve performance and reduce emissions.

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The State of Sustainable Fleets report gathers real-world data directly from early-adopter fleets across the U.S. to provide deep sector-specific insights into the adoption of natural gas, propane, battery electric, and hydrogen fuel cell electric vehicles, against a baseline of diesel and gasoline vehicles. The analysis includes public, private, and for-hire fleets, including school, municipal/shuttle, urban delivery, refuse, utility, transit, short-haul, and long-haul sectors. This first-of-its-kind report includes unique insights into vehicle sale trends, anticipated vehicle development timelines, real-world infrastructure and fuel costs, and the growing adoption of renewable fuels.

The on-road transportation industry is at a pivotal moment.

Key factors and major market forces are aligning to make this a critical time for the future of the industry.

Emissions on the Rise

With global greenhouse gas emissions and smog-forming pollutants continuing to rise, the industry is under growing pressure to rapidly adopt and deploy clean vehicle technologies.

Competing Technologies Emerging

Multiple promising vehicle technologies are emerging simultaneously, with more industry investment fueling innovation than ever before.

Mounting Sustainability Pressures

Globally, private companies and public regulators are stepping up to set ambitious sustainability goals and putting aggressive strategies in place to meet them.

Pace of Technology Quickening

After decades of research and development, the industry is moving from pilot projects to deployments of new technologies in real-world applications across sectors.

Determining a Path Forward

On-road fleets are weighing their options to determine which zero and near-zero emission vehicles can meet their operational needs—today and well into the future.