More power options are coming soon to the large school bus space as Cummins prepares to launch a second gasoline engine option for the market and its long-awaited successor to the 6.7-liter diesel engine.
The gasoline or octane engine will be in full production next January, with the new B7.2 diesel engine available January 2027, the company announced earlier this month. The new gasoline engine will be available January 2026.
Both engines are the initial launches of Cummins’ HELM, or Higher Efficiency, Lower emissions and Multiple fuels, platform. The engine lineup is referred to as “fuel agnostic,” the base engine remains the same, but the fuel heads can be swapped for diesel, gasoline and eventually CNG.
Currently, the school bus industry only has one choice in gasoline and propane, that being the ROUSH CleanTech auto-gas system for Blue Bird.
Cummins originally planned on adding a propane offering on its HELM platform but announced last year it would forego that option.
The B7.2 meets the upcoming EPA Greenhouse Gas Emissions Phase 3 rule set to go into effect in 2027. The company said will emit approximately 85 percent less NOx and 50 percent less PM than 2010 model year diesel engines. In an overview provided to School Transportation News, Cummins explained that lower GHG result from the clean-sheet base engine and optimized components.
“One of the most significant changes is the increase in peak cylinder pressure capability, allowing us to extract the energy from the fuel more effectively,” the overview states. “As greenhouse gas emissions are directly proportional to fuel burned, the improvements made to improve GHG emissions also save fuel, reducing the operating costs of the new B7.2.”
The diesel will also be compatible with automatic engine shutdown and stop-start systems that can lower fuel consumption as well as GHG.
Courtesy of Cummins.
On a recent episode of the School Transportation Nation podcast recorded at STN EXPO East, Francisco Lagunas, general manager of the North America bus segment at Cummins, said the B7.2 diesel engine will provide a wider range of torque as the company address the various duty cycles of its customers and the environmental condition they operate in.
“There are big differences north to south, coast to coast. Cummins focuses on reliability and what’s best for the customer,” he added.
This includes ACUMEN that provides access and connectivity to a range of applications for , digital insights.
“Customers can utilize these detailed tools to enhance the driving experience including predictive capabilities and over-the-air features that will reduce visits to the shop, increase uptime and minimize the operations,” Lagunas continued. “It will also take advantage of options like compression brake or extend the oil drain intervals.”
Meanwhile, Lagunas said the new octane engine available next year will provide diesel-like performance for both reliability and durability. He added that fleet operators can expect 10 percent improved fuel economy based on the duty cycle.
CONCORD, N.C. – A panel featuring transportation director experiences shared the process and benefits of transitioning a school bus operation from diesel to propane.
Stephen Whaley, the eastern region alternative fuels manager for session sponsor Blue Bird, reviewed the growing interest in greener fuels due to increasingly strict emissions standards on diesel. Echoing his point from the previous day’s Green Bus Summit session, he said propane was “the easy button” when switching from diesel due to its popularity, accessibility, affordability, safety, environmental friendliness, and ultra-low NOx emissions.
“If you go to propane, my prediction is that you won’t go back.”
– Joel Stutheit, Senior Manager of Autogas, Propane Education & Research Council
Trey Studstill, senior executive director of transportation for Paulding County School District located northwest of Atlanta, Georgia, oversees the transportation of 21,000 students a day. He said he had no intentions to depart from diesel but, purchased 30 propane school buses in 2015 at his superintendent’s suggestion for cost-effectiveness and environmental consciousness.
Having some apprehension about fueling infrastructure, Studstill said his department did copious research and found a good partner that handles much of the minutia. He provided data reflecting a 43 cent cost per mile savings compared to diesel.
Both Studstill and Dennis Ryan, coordinator of transportation for North Penn School District near Philadelphia, Pennsylvania, shared that Blue Bird’s autogas system partner, ROUSH CleanTech, was helpful during the research and planning stage.
Ryan said his district appreciates the fuel cost savings, which amounts to 13 cents per mile over diesel. Additionally, he said, students enjoy the cleaner air around the buses and drivers are happier with a quieter bus. He cited a Georgia State University study, which compared school districts that operate lower-emission school buses equipped with diesel emissions retrofits to higher emitting diesel buses. Researchers found that student test scores in the districts with the retrofitted buses improved.
“For us at least, it’s a no-brainer.”
– Trey Studstill, Senior Executive Director of Transportation, Paulding County School District (Ga.)
While Ryan said some drivers took longer to warm up to propane buses, Studstill noted that a preemptive education campaign and hands-on experience helped convince drivers initially opposed to the idea.
“For us at least, it’s a no-brainer,” Studstill said. “That’s been our super’s [modus operandi]: ‘What’s best for the students?’”
Joel Stutheit, senior manager of Autogas for the Propane Education & Research Council (PERC) and a former school district director in Washington state, noted that the cleaner-burning propane gives maintenance benefits, in addition to costing less than diesel. Upon implementation, he said he worked with specific drivers open to trying out the propane buses but revealed that vehicles quickly became high demand with other drivers.
While propane infrastructure is usually the hardest piece of the implementation, Whaley noted, Stutheit said that process is still simple, safe and costs about $60,000. That is much more cost-effective than implementing electric infrastructure, he noted. Stutheit and Whaley added that propane is even less expensive upfront when a school district works with a propane provider on a subscription basis or starts with a portable tank like what PERC offers.
“Plan for the future,” Stutheit recommended. “If you go to propane, my prediction is that you won’t go back.”
He advocated conducting fueling training with school bus drivers and local fire departments for greater understanding all around.
Whaley shared that the Alternative Fuel Station Locator published by the U.S. Department of Energy pin-points locations where propane school buses can refuel when on field or activity trips. A local Clean Cities organization can provide districts with additional help on funding sources and vendor partners, he said.
While the purchase price of a propane bus could cost as much or more than a diesel, Stutheit noted that in the long run the propane cost savings from tax incentives and reduced maintenance costs are realized.
Studstill answered an attendee question on maintenance comparisons. “In every respect, propane is a pro, not a con,” he said. “The things you don’t have to do [on a propane bus] are where the savings are.”
Ryan and Stutheit agreed that they could find no shortcomings with propane school buses. All panelists agreed that training is key in a successful propane implementation, which is provided for free according to Tom Hopkins, business development manager for ROUSH CleanTech.
Studstill and Whaley explained that if a correct pump size is installed, districts should see no change in fueling times in either hot or cold weather. All three transportation directors reported a range of about 300 miles per tank, enough to comfortably complete bus routes and activity trips.
RICHMOND, Va. — The Propane Education & Research Council (PERC) has hired Joel Stutheit as senior manager of business development for its on-road market portfolio.
In his new role, Stutheit will be responsible for growing propane autogas market share for on-highway light-, medium-, and heavy-duty vehicles. He will be focused on the implementation of strategic market plans that support research and development of innovative technologies, product launches, maintenance and growth in existing market segments, as well as new market expansion opportunities.
“We’re thrilled to welcome Joel to the team and we’re looking forward to him making a big impact for our mission,” said Tucker Perkins, president and CEO of PERC. “Not only does Joel bring invaluable expertise to our organization, but he also has first-hand experience adopting propane autogas and knows what fleet managers are looking for when evaluating alternative fuels.” Prior to joining PERC, Stutheit spent over 20 years in the education sector, serving in assistant principal roles at several schools and then as director of Bethel School District in Spanaway, Washington. As director, Stutheit led a variety of projects and operations, including overseeing an $18 million annual budget. He established the district’s propane autogas school bus program, procuring $2.5 million of buses yearly with the assistance of grants he helped secure. The program earned statewide recognition for its cost savings and progress toward clean energy goals. Stutheit holds a bachelor’s degree in education from Eastern Washington University as well as a master’s degree in educational leadership from Heritage University.
About PERC: The Propane Education & Research Council is a nonprofit that provides leading propane safety and training programs and invests in research and development of new propane-powered technologies. PERC is operated and funded by the propane industry. For more information, visit Propane.com
Yellow continues to go green as school districts across the country modernize fleets with the latest alternative fuel technologies, to support cleaner air for students and the neighborhoods where they live. Through expanded offerings in bio- and renewable diesel, ultra-clean propane and natural gas, and battery electric offerings that eliminate tailpipe exhaust, owners and operators have options to support their sustainability initiatives in an economic fashion.
From traditional bus manufacturers to startups and new market entrants, manufacturers are offering near- or zero-emission school buses and showing no signs of slowing down. Shifting incentives and regulatory landscapes have not dimmed the prospect of the school bus industry’s clean transportation future.
The Changing Chess Board of School Bus Manufacturers
Original equipment manufacturers like Blue Bird, IC Bus, Thomas Built Buses, Collins and Micro Bird offer diversified product portfolios, including options for near-zero and zero-emission school buses. Market competition, specifically in the all-electric space, has increased with companies like RIDE, GreenPower Motor and others entering the market with zero-emission solutions.
Up until last year, trends showed that the silver bullet solution of zero emissions would be the favored choice for the school bus market. Indeed, many schools have successfully deployed battery electric fleets and are having favorable operational results. However, recent economic, political and customer demand changes have started telling a different story — diversified product lines give consumers the flexibility to find the right solution.
One of the most telling signs for electric vehicles was the slate of bankruptcy announcements, from onetime industry darlings like Lion Electric on the school bus side and Nikola Corporation on the heavy-duty truck side. Further, the fate of unprocessed orders and recently delivered assets — and the deleterious impacts of grant funding pauses — would seem to indicate that a diversification in product offerings could be a viable risk mitigation strategy during times of market uncertainty.
Incentive Structures Expected to Change for School Buses
The EPA’s Clean Schol Bus (CSB) Program has served as the primary incentive for alternative fuel school buses over the last three years. Indeed, since 2022, CSBP funding has supported over 1,300 school districts to deploy over 9,000 alternative fuel school buses. The Diesel Emissions Reduction Program (DERA) has also funded more than 3,000 clean diesel and alternative fuel school buses since 2012.
Though many diesel replacement funding programs across the country use cost-effectiveness to evaluate projects and funding levels, the school bus market has often seen a flat rate or voucher-style incentive. Most recently, the EPA set the voucher for battery electric buses at more than $300,000 per unit. With increased scrutiny on federal incentives and their effectiveness, the incentives landscape will likely move away from these flat rate structures.
Beyond the EPA’s initiatives, several states have prioritized the transition to diesel alternatives by creating grant programs that offset the upfront investment for the buses and required infrastructure. California’s most recent incentive, the Zero Emission School Buses and Infrastructure (ZESBI) Program, aligns with similar initiatives in Colorado, New Jersey, and New York that promote all-electric options. Michigan, too, prioritizes clean school buses, though its program includes eligibility for all-electric and near-zero emission options. In total, these state-level programs may drive as much as $1 billion in aggregate incentives to the alternative fuel school bus market.
Aligning with President Donald Trump’s executive orders and the focus on domestic energy, several alternative fuels seem primed to gain (or perhaps regain) momentum — renewable diesel/biodiesel, natural gas, and propane. Hardly a new technology, propane in particular has served as a clean transportation industry stalwart for decades, lauded by its fleet adopters for its ability to provide affordable, efficient, and accessible clean transportation. More and more school districts, businesses and transit agencies may review the viability of these domestically produced alternative fuel options as a means of affordably diversifying fuel supply.
Shifting the Lens: Finding Market Drivers in a New Administration
The slate of recent executive orders has introduced a new set of agendas, initiatives and motivators. While the market continues to absorb and assess the potential implications, one element stands out in stark contrast, the short-term funding landscape holds plenty of uncertainties. From the status of existing EPA programs to the planned use of funds from the Investing in Infrastructure and Jobs Act and the Inflation Reduction Act, there is still much to understand about where future federal funding may come from for alternative fuel school buses. However, as noted above, state funding programs offer a viable solution.
Beyond incentives, additional motivators for going green include regulatory mandates and carbon credit programs. In California, Assembly Bill 579 requires school districts to purchase zero-emission buses starting in 2035, and other states such as New York and Washington have proposed or approved similar measures. The portfolio of states with carbon credit programs grew from three to four with the addition of New Mexico.
Now, New Mexico as well as California, Washington and Oregon are generating revenue for fleet operators and creating additional interest in battery electric projects.
Final Thoughts
America’s yellow school buses have made considerable strides to improve performance, air quality and safety, and these trends are expected to continue well into the future. Challenges and opportunities abound though, as market drivers, political and policy motivations, and sustainability trends continue to shift. Upcoming announcements at the Federal and state levels will be telling as to how the school bus market will need to adjust priorities and continue the adoption of alternative fuel technologies.
Upcoming Events
Trying to stay on top of the changing policy and funding landscape? Look to STN’s events over the next few months as well as ACT Expo as critical opportunities to hear directly from funding agencies, fellow school districts deploying alternative fuel buses, and manufacturing partners. ACT Expo, the largest advanced commercial vehicle technology showcase in North America, offers just that, a four-day conference bringing together the leading alternative fuel manufacturers, infrastructure providers and fleet operators. Editor’s note – School Transportation News is an official media sponsor of ACT Expo.
ACT Expo, which returns to Anaheim, California, this spring, will host a school bus sector session on April 30 for transportation directors to learn more about this ever-changing landscape. STN EXPO’sGreen Bus Summits, occurring in Charlotte, North Carolina on March 23-24 and in Reno, Nevada on July 13-14, offer similar content around policy and incentives.
Joe Annotti, VP of incentives for TRC Clean Transportation Solutions, speaks during the 2019 ACT Expo.
Joe Annotti is the senior vice president of incentives for the TRC Clean Transportation Solutions, the organizer of ACT EXPO. He presents the session “State of Green Schools Buses” at STN EXPO East in on March 23.
Dr. David K. Moore, the superintendent for the School District of Indian River County in Florida, referred to school bus drivers as transportation professionals, adding they are the first team members to “greet our students in the morning and the very last team members to wish them a good evening after school.”
At a Glance: Indian River Schools
Number of drivers: 72
Number of routes: 68
Student transported daily: 7,000
Miles traveled yearly: 1.6 million
Moore noted that school bus drivers have an “incredible responsibility” to transport students safely to and from school. In addition, transportation plays a role in transporting students to and from a variety of enriching and extracurricular activities offered by Indian River.
“We depend on our transportation professionals to support students in arriving to school on time so that we can maximize the instructional time that we have,” he added.
One major district initiative, Moore said, is sustaining the rate of accelerated achievement outcomes and expanding focus on school innovation to create a portfolio of offerings for the community.
“We continue to build and maintain robust data systems and infrastructure to not only drive unprecedented rates of improvement in student achievement, but also to ensure fiscal and organizational responsibility through our system,” he said.
Indian River also operates a 100-percent, propane-fueled school bus fleet with a current project focusing on adding a new propane fueling station.
Ahead of the 2025 Superintendent of the Year being named on March 6 at the National Conference on Education in New Orleans, Louisiana, School Transportation News sat down with those in charge of transportation operations at the respective districts to gain a better understanding of how the services function. The Superintendent of the Year Award is sponsored by AASA: The School Superintendents Association, along with Corebridge Financial and Sourcewell, to celebrate the contributions and leadership of public-school superintendents.
This year’s four finalists were selected from 49 state superintendent award winners (Hawaii was not included) and were judged based on their exhibited leadership for learning, communication, professionalism and community involvement.
A $10,000 college scholarship will be presented in the name of the 2025 National Superintendent of the Year to a student at a high school the winning superintendent graduated from or from the school district the winner now leads.
Jennifer Idlette, director of transportation, said workplace culture is positive with a strong teamwork foundation. She noted that the team is often acknowledged and appreciated for their efforts.
She noted transportation is able to maintain drives in excess of routes, but face challenges when illnesses, absences and academic and athletic trips are added in.
“We are required to split (double-up) routes frequently,” she said. “We focus on recruiting and hiring year-round, $300 recruitment bonus paid to district employees for referrals who are hired, and we offer an optional 40-hour work week for drivers by assigning them as school support during mid-day break.”
Idlette said Moore informs his departments of district initiatives and provides support when needed to address and resolve concerns in a timely manner.
Dr. Moore’s Education History
Moore said he started his education career as an exceptional student education teacher and school counselor. Five years in, he began serving in a variety of district leadership roles until he became the superintendent at Indian River County five years ago.
He shared that his father served as a principal for 21 years at the same school and had the greatest influence on cultivating his unwavering purpose as an educator.
“Naturally a very quiet man, my father would come to life when speaking about teaching and learning,” Moore added. “Many of the times I felt most connected to dad was when we would discuss his life’s passion for education, a passion that would be replicated in me. I watched my father cultivate growth, ownership and ambitious expectations at the school he led.”
Without realizing it, Moore said he was learning how “leaders adapt, inspire, and invest in people.
“Looking back, I was observing the intangible elements of culture that have shaped my beliefs and actions throughout all my leadership experiences and formed the building blocks for building sustainable, high-quality learning environments that our students deserve,” he added.
Moore said that being a finalist of the AASA Superintendent of the Year is something he is proud of for the recognition it brings his entire school district team.
“For them to be recognized across the state for their unwavering investments in and collective commitment to providing high quality educational experiences for all students, while realizing unprecedented academic outcomes,” he said. “Individually, I see this as an opportunity to be an ambassador and advocate for public education, to uplift all public education leaders in being authors of our own reform, and to demonstrate that public education can deliver the outcomes that all students deserve.”
MACON, Ga. — Wilkes County Schools (WCS) has marked the historic milestone of becoming the first school district in Georgia to serve all of its 25 daily bus routes exclusively with zero- and ultra-low-emission school buses. WCS’ new fleet of electric and propane-powered buses eliminates regular diesel bus routes, significantly improving air quality for students and the surrounding community, while also significantly reducing operating costs.
Blue Bird Corporation (Nasdaq: BLBD), the leader in electric and low-emission school buses, delivered 5 electric and 12 propane-powered school buses to Wilkes County Schools. The company’s electric school buses generate zero emissions and can carry approximately 60 students up to 130 miles on a single charge.
WCS can considerably lower its operating expenses by replacing diesel with electric school buses due to reduced fuel and vehicle maintenance costs. School districts have reported paying a mere 19 cents per mile in energy costs for electric buses compared to fuel costs of up to 79 cents per mile for their diesel buses.
WCS will also rely on Blue Bird’s industry-leading propane buses for its student transportation needs. Blue Bird’s propane buses for the school district can carry approximately 60 students around 250 miles on a single tank of propane autogas. Propane school buses generate 96% fewer harmful emissions than their diesel counterparts.
In addition, propane-powered school buses help the school district to lower the total cost of ownership of its bus fleets by realizing fuel and maintenance cost savings of up to $3,700 per bus annually compared with diesel buses. WCS presently operates a fleet of 22 Blue Bird propane buses. Thus, the school district could save more than $1.2 million over the 15-year life of its vehicles.
“We are proud to be among the first school districts in the nation to launch a fleet of all electric and propane-powered school buses,” said Michelle Smith, superintendent of Wilkes County Schools. “Blue Bird’s zero- and ultra-low-emission school buses will help us to create a healthier environment for our students and our communities at-large while significantly lowering our operating costs. Together, we have transformed our ambitious vision of clean, sustainable student transportation into a reality.”
“We are delighted to supply Wilkes County Schools with our industry-leading, electric and propane-powered school buses,” said Albert Burleigh, vice president of North America bus sales at Blue Bird Corporation. “Moving forward, students on all 25 daily routes will travel exclusively on zero- and ultra-low-emission buses to and from school. We applaud Wilkes County Schools for putting student and community health first.”
The leading provider of school bus fleet electrification-as-a-service, Highland Electric Fleets, installed five new Tellus charging stations to support the district’s five electric school buses. These chargers allow WCS to utilize overnight and downtime charging, ensuring the buses are always ready to meet transportation needs.
“We’re thrilled to be one of the partners helping Wilkes County Schools transition to a fully clean school bus fleet, bringing lasting air quality to students and cost-saving benefits to the school district,” said Duncan McIntyre, CEO of Highland Electric Fleets. “By adding electric school buses and charging infrastructure, WCS is investing in healthier, more resilient communities, while ensuring that students have a safe, reliable ride to school every day.”
WCS received a $2,335,000 grant through the U.S. Environmental Protection Agency’s (EPA) highly effective Clean School Bus Rebate Program to purchase its Blue Bird electric and propane-powered school bus fleet. This program is part of the Bipartisan Infrastructure Law (BIL) which provides a total of $5 billion over five years for clean school bus transportation nationwide. The EPA has already awarded nearly $3 billion through the landmark bipartisan initiative. The program to date will enable more than 1,300 school districts nationwide to replace old diesel buses with nearly 9,000 electric and ultra-low emission vehicles.
Blue Bird is the only U.S.-owned and operated school bus manufacturer in the United States. The company remains the proven clean transportation leader with more than 2,000 electric-powered, zero-emission school buses in operation today.
In addition, Blue Bird is the only school bus manufacturer in the United States to offer propane-powered school buses. Today’s propane engine is 90% cleaner than the most stringent federal emission standard set by the EPA. New and even stricter emission standards will take effect in 2027. Blue Bird’s ultra-low emission, propane-powered school buses exceed those emission standards already today.
Wilkes County Schools purchased its advanced electric and propane-powered vehicles through Blue Bird’s authorized school bus dealer Yancey Bus Sales & Service in Austell, Ga.
About Blue Bird Corporation
Blue Bird (NASDAQ: BLBD) is recognized as a technology leader and innovator of school buses since its founding in 1927. Our dedicated team members design, engineer and manufacture school buses with a singular focus on safety, reliability, and durability. School buses carry the most precious cargo in the world – 25 million children twice a day – making them the most trusted mode of student transportation. The company is the proven leader in low- and zero-emission school buses with more than 20,000 propane, natural gas, and electric powered buses in operation today. Blue Bird is transforming the student transportation industry through cleaner energy solutions. For more information on Blue Bird’s complete product and service portfolio, visit www.blue-bird.com.
About Wilkes County Schools
Located in historic Washington, Georgia, Wilkes County Schools serves approximately 1,250 students within a diverse and inclusive rural community. Guided by the vision of “Excellence Without Exception,” the district is dedicated to transformative education, offering robust programs in STEM, fine arts, Career and Technical Education, Advanced Placement, and dual enrollment. With a commitment to critical thinking, lifelong learning, and educator development, Wilkes County Schools fosters a safe, innovative learning environment. Grounded in community collaboration and a tradition of continuous improvement, the district prepares students to excel in an ever-evolving, competitive global workforce. For more information, visit www.wilkes.k12.ga.us.
About Highland Electric Fleets
Highland Electric Fleets is the leading provider of electrification-as-a-service for school districts, governments, and fleet operators in North America. Founded in 2019, Highland offers a unique suite of products that make it simple and affordable to upgrade to electric fleets today. Active in 30 states and Canada, Highland is responsible for the first use of electric school buses in a commercial vehicle-to-grid (V2G) program and the largest electric school bus project in the United States to date. To learn more, visit www.highlandfleets.com.
The Missouri Department of Elementary and Secondary Education (DESE) is offering to fund local education agencies (LEAs) in the state to purchase propane-powered school buses.
The Missouri Propane Education and Research Council said in a press release that DESE is providing $970,000 million in funding to school districts for the purchase of the propane school buses. School districts can apply for up to four propane buses at $24,250 each.
Application consideration will be based on data received. At the time of the release last month, the DESE said it had received over two dozen applications and about dozen more spots were available.
Guidance from DESE stated that school buses must meet certain eligibility requirements, including being a 2024 model or newer equipped with an EPA certified engine, and purchased rather than leased. LEAs will need to provide a title, certificate of origin, or a purchase order to the department, showing the purchase of the buses with grant funds, by June 15.
The applications are due Dec. 15. DESE stated that “after the initial application period, should funds remain available, a second round of funding will be offered using the same criteria that will be applied to the first round.”
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