2021 Sustainable Fleets Report Looks to Add More Insight on Clean Tech
Gladstein, Neandross & Associates is looking for fleets to contribute to the second edition of its State of Sustainable Fleets report, covering natural gas, propane, battery-electric, and hydrogen fuel cell electric vehicles fleet adoption.

Fleets are wanted to contribute to a new "State of Sustainable Fleets" report.
Photo: Gladstein, Neandross & Associates
In an effort to gain more insight into the status of both current and upcoming clean vehicle technology adoption, Gladstein, Neandross & Associates is looking for fleets to contribute to the second edition of its State of Sustainable Fleets report.
The 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. The analysis looks at public, private, and for-hire fleets, including school, municipal/shuttle, urban delivery, refuse, utility, transit, short-haul, and long-haul sectors. This 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.
A key takeaway from the 2020 report shows that all sustainable vehicle platforms included in the report are seeing growth in fleet use across medium- and heavy-duty fleet sectors. Furthermore, 98% of fleets surveyed last year expect to continue the same level or increase their use of sustainable vehicle technologies and fuels.
While transit agencies are leading adopters of natural gas, BEVs, and even FCEVs, almost every medium- and heavy-duty fleet type the report assessed is using at least one of these clean technologies in growing numbers, including delivery, school bus, refuse, and heavy-duty short haul fleets.
The 2021 report will include updates on last year’s data, again focusing on natural gas, propane, battery-electric, and hydrogen fuel cell electric vehicles fleet adoption now and in the future.
Download the 2020 report: https://www.stateofsustainablefleets.com/2020-report/
More Fuel Smarts

New Agentic Predictive Maintenance Report Demonstrates How Degraded Aftertreatment Systems Waste Fuel
Questar analyzed a large mixed-class fleet and discovered it was wasting as much as $30 in fuel per vehicle, per day, because of mechanically degraded aftertreatment systems.
Read More →
New York City's Microhub Project is Delivering Results
Trucking, last-mile delivery companies, and environmental advocates like what they are seeing so far with New York's microhub program.
Read More →
Lessons Learned About Alternative Fuels: Start Small, Stay Flexible
Practical advice on adopting alternative fuels and ZEVs from HDT's 2026 Top Green Fleets, from renewable diesel and natural gas to electric trucks.
Read More →
Kempower Adds Flex EV Charger to Help Support Transition to Megawatt Charging
The Kempower Mega Satellite Flex has both a CCS and MCS connector, allowing operators to serve both types of heavy-duty vehicles.
Read More →
Hino Adds Electric Class 6/7 Truck
Hino says the Le Series is an important step in the company's efforts to reduce environmental impact and support its customers’ sustainability goals.
Read More →
Can Multi-Speed EV Transmissions Solve Heavy Trucking’s Biggest Electric-Vehicle Problems?
A startup called Sigma Powertrain believes purpose-built multi-speed gearboxes can boost efficiency, reduce battery size and improve gradeability for heavy-duty battery-electric trucks.
Read More →
Hendrickson Debuts Electraax E-Axle for Medium-Duty Trucks
Developed with Driventic, Hendrickson's new integrated e-axle is designed to improve efficiency, reduce weight, and extend range in Class 6-7 EV applications.
Read More →
50 Ways Fleets Can Cut Fuel Costs Now — Without Buying New Trucks
Fuel savings don’t come from one big change. They come from dozens of small ones. Here’s how leading fleets are stacking gains across drivers, routing, maintenance, and more.
Read More →
Top Green Fleets 2026: How Fleets Are Reducing Emissions in the Real World
What works in sustainable trucking today? Heavy Duty Trucking's Top Green Fleets are finding practical ways to cut fuel use, reduce emissions, and keep freight moving.
Read More →
California Launching $1 Billion Electric Truck Rebate Program
CARB says the California Clean Fuel Reward program will begin offering point-of-sale rebates of up to $120,000 for electric commercial trucks starting June 26.
Read More →
