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Stay In the Know: Recently Released
Research on Clean Vehicle Technologies

his spring, three recently released reports • New, more powerful engines for propane fueling
shed light on the state of transportation fuels will usher in a new wave of adoption.
and technology. They include a collaborative • An unprecedented $32 billion in incentive funding
Tfield study from National Renewable Energy is expected in 2024, with an estimated $20 billion
Lab and Drive Clean Colorado, a 2024 market brief on available for medium duty and heavy duty fleets
the state of sustainable fleets and research from Har- directly.
vard. Here’s a breakdown of some of the key findings
to help your teams understand and share the latest • New partnerships, innovative business models and
data on clean vehicle technologies. technologies to utilize natural gas and propane
reveal an oncoming host of innovations to solve
Delivering Clean Air in Denver: Propane Trucks and the EV charging challenge.
Infrastructure in Mail Delivery Application
• Confusion for fleet operators and the wider
Authors: Drive Clean Colorado, National Renewable marketplace on engine standards is expected to
Energy Laboratory continue for the next few years.
Summary: Our friends at Drive Clean Colorado ex- Adopting Electric School Buses in the United States:
plored the viability of propane as an alternative to Health and Climate Benefits
diesel fuel for trucks by partnering with Hi Pro and
NREL. A 12-month analysis found the propane trucks Author: T.H. Chan School of Public Health
achieved dramatic cost savings and reduction in harm- Summary: Harvard researchers studied the financial
ful emissions. impact of the climate and health benefits that come
Key findings: with replacing old diesel school buses. The study focus-
es on electric school buses as replacements for diesel
• 98% reduction in tailpipe nitrogen oxide emissions models.
• Virtual elimination of tailpipe sulfur oxide emis- Key findings:
sions.
• When subsidies are removed, the total ownership
• Savings of $20,000 per vehicle in the first 12 cost is $156,000 higher for an electric school bus
months. compared to a diesel school bus.
• 18.9% reduction in combined tailpipe and produc- • Previous estimates of $15,000 per year in vehi-
tion carbon dioxide emissions. cle-to-grid (V2G) revenues are closer to $40 to
2024 State of Sustainable Fleets Market Brief $400 based on newer data.

Author: TRC Companies, Inc. • Health savings from replacing diesel with an elec-
Summary: The fifth annual technology-neutral analysis tric bus totaled $43,800 by reducing air pollution,
of key insights and critical trends for today’s leading mortality rates and childhood asthma.
on-road clean vehicle technologies produced by State • Government subsidies such as EPA’s Clean School
of Sustainable Fleets. Bus Program are artificially affecting cost of owner-

Key findings: ship for electric buses.
• We are entering a period of peak complexity, and Please reach out directly if you’d like to discuss
recent data shows that growth in all sustainable this research or the work our team is doing to create
fleet solutions will require a variety of options to affordable transportation products that meet current
achieve fleet operational, cost and sustainability and future emissions standards.
goals. Todd Mouw, executive vice president, ROUSH
• Propane has proven its positive total cost of CleanTech■
ownership year after year for applications such as
goods and logistics, refuse, passenger transport
and medium duty vocational service.

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