can electric school buses go the distance?

14 SCHOOL BUS FLEET JUNE 2016 WWW.SCHOOLBUSFLEET.COM

partnered to build electric school buses for California from the ground up using technology developed for transit buses, says Jim Reynolds, CEO of Adomani.

Also in California, retroits for six bus-es going to the Torrance Uniied School District, Napa Uniied School District, and Edison School District in Bakers-ield are in the home stretch, says Josh-ua Goldman, vice president of business development at TransPower, a supplier of heavy-duty electric drive technology. Two of the 1996 Blue Bird Type C school buses are also being retroitted with ve-hicle-to-grid technology for each district.

In addition to having its electric pow-ertrain in Trans Tech’s SSTe Type A school bus, Motiv Power Systems’ pow-ertrain will also be in the Starcraft eQuest

With more oferings than ever, the technology and beneits from electric buses are generally prov-en. But where are they operating today? Is there

funding available to help school districts outside California aford the vehicles? What about other obstacles, such as ex-tremely cold weather?

There are now more companies manu-facturing electric school buses and con-verting fossil fuel powered buses than just a few years ago. However, the buses have just become commercially available in the last year, says John Clements, vice presi-dent of electric bus sales for First Priority Bus Sales – California.

Consequently, it could just be a mat-

ter of time before the school bus market introduces more electric buses into its leets, following in the footsteps of the transit market, says Fraser Atkinson, executive chairman of Canada-based GreenPower. Production is growing and driving costs down, and battery capabili-ties are improving.

Pilot projectsIn addition to Gilroy (Calif.) Uniied School District, which has been operat-ing an electric school bus converted from diesel by Adomani since 2014, the zero-emissions vehicle solutions supplier is converting diesel school buses to electric power or replacing buses for about 25 school districts.

Adomani and GreenPower recently

The technology is proven, and the buses offer cheaper operating costsas well as zero emissions. Still, with scarce funding in many states

and extremely cold winter temperatures, will the vehicles gaintraction in the school transportation market?

By Nicole Schlosser, Managing Editor

Can Electric School Buses Go the Distance?

E L ECT R I C SC H O O L B U S E S

In addition to having its electric powertrain in Trans Tech’s SSTe Type A school bus, shown here, Motiv Power Systems’ powertrain will also be in the Starcraft eQuest XL, which can seat 48 passengers.


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voltage system needed to accommodate a new Spheros air conditioning system, Clements says.

The buses have been used occasionally on routes that range from 14 to 37 miles round trip, and the district plans to ex-tend one of those routes to about 60 miles round-trip to pick up more students.

“This bus will be ideal for [the route] because to run a full-size hybrid or natu-ral gas bus is costly, compared to the 7 to 14 cents a kilowatt hour for an electric school bus,” he adds.

In November, Lion Bus delivered six eLion Type C electric school buses to school transportation contractors in Que-bec, and now has over 20 of the buses on the road, says Marc-Andre Page, business development manager at Lion Bus. Lion

expects to put a total of about 70 eLions into operation in the province by the be-ginning of the 2016-17 school year.

BenefitsThe biggest advantages of electric school buses, all sources say, are zero emissions, and that they provide the lowest and most stable operating cost of any fuel.

TransPower’s Goldman notes that electricity is often cheaper and more ef-icient, even with today’s low diesel, pro-pane, and CNG prices.

Motiv’s Castelaz agrees, adding that electric buses pay for themselves over their lifetime.

“[A school transportation provider] will know exactly how much money they need to operate the bus every year for the next ten years,” he says. “You can’t do that with any other alternative fuel today, because

XL. The electric powertrain supplier has partnered with Creative Bus Sales to de-velop the Type C school bus, which can seat up to 48 passengers. That bus is be-ing launched by Starcraft and Creative Bus Sales, says Jim Castelaz, founder and CEO of Motiv Power Systems.

Motiv will test the irst eQuest XLs and place them with some school districts for pilot projects later this year.

Meanwhile, two New England-based projects seek to bring electric school bus-es to the northeastern U.S., says Bethany Whitaker, senior consultant for Vermont Energy Investment Corp. (VEIC), a non-proit that works to reduce the economic and environmental costs of energy use.

VEIC is conducting a feasibility as-sessment for operating electric school

buses in Vermont, examining the budgets and capital planning of four self-selected school districts and the cost of the buses.

The second project, an electric school bus pilot in Massachusetts, is being ad-ministered by the Massachusetts Depart-ment of Energy Resources. VEIC will help the districts buy the bus and the vehicle-to-grid infrastructure.

The Massachusetts project is believed to be the irst deployment in the eastern U.S., Whitaker says.

On the roadKings Canyon Uniied School District (USD) in California put two Trans Tech SSTe Type A buses into operation on special-needs routes in 2014, and soon after, ordered two more, which were de-livered in March. Now, the irst two are being retroitted by Motiv with the high-

Kings Canyon Unified School District in California put two Trans Tech SSTe Type A buses into operation on special-needs routes in 2014, and soon after, ordered two more, shown here. They were delivered in March.



To maximize the range of an electric school bus, school transportation pro-viders should consider garage and bus yard locations in relation to their routes, Adomani’s Reynolds says. One district the manufacturer worked with needed an 80-mile range, but their budget only al-lowed for a 65-mile range bus. On second glance, the district was able to move buses to diferent yards and cut the range down to 45 miles.

Another beneit that is on the way is vehicle-to-grid technology, which uses a bidirectional charger to tap the energy stored in the bus’ batteries to power build-ings during an outage or sell power back to the utility company, saving money on util-ity bills. Plugging the buses in to the build-ing can send power back during peak load-ing, which releases stress on the grid and lowers the facility’s electricity bill. That is especially handy over the summer, when school buses are more available, and the grid experiences the biggest peaks due to air conditioning loads.

Some bus models have shown that each school bus could save a school dis-trict from $5,000 to $10,000 annually in utility bills, TransPower’s Goldman notes.

Motiv’s buses can be upit with software and hardware to enable ve-hicle-to-grid capability, and Lion Bus expects to have some vehicle-to grid capabilities beginning next fall. Kings Canyon is discussing possibly adding vehicle-to-grid technology on its SSTe buses with its utility company.

Then again, there are many regulations governing how electricity is bought and sold in Massachusetts, Whitaker says. Be-cause of that, the four school buses in the

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fuel prices are very volatile right now.” Electric school buses also require very

little maintenance. Minimal lubricant is needed, and brakes need to be replaced much less frequently, since regenerative braking is done from the electric drive.

Charging the buses at of-peak hours can save even more money.

“Peak time is probably 22 to 24 cents per kilowatt hour. Of peak is 6 to 8 cents per kilowatt hour,” Adomani’s Reynolds says. “If you’re traveling 100 miles a day and using the bus eight or nine months out of the year, you’re probably going to save in the neighborhood of $22,000 just in fuel costs over diesel.”

Of particular beneit to those aboard the buses is that they often run smoother and quieter, enhancing safety, Reynolds adds.

“Without the engine noise, the bus driver can be more attentive to traic and to what’s going on inside the bus,” he says.

Meanwhile, over the last six months, higher energy density batteries that can power buses for a longer distance have been introduced, Clements says. The bat-tery conigurations generally ofer 60 to 80 miles of range per 50% charge of a few hours, with ranges of 100 to 125 miles on the horizon.

For example, the eLion used to have seven batteries. After a recent make-over, it now has four LG Chem batter-ies that can power the bus for longer. Additionally, for a slightly high-er price, GreenPower’s 40-kilowatt charging system fully charges a bus in three hours or less, Atkinson says. “Compared to where this industry was ive years ago, that’s pretty fast,” he adds.


In November, Lion Bus delivered six eLion electric school buses to school transporta-tion contractors in Quebec, and now has over 20 of the buses on the road.

“New York’s voucher is about $60,000, and Chicago’s and California’s are about $100,000 per electric bus,” Castelaz says.

However, school districts that aren’t lo-cated in one of those areas can talk to their state and national legislators about Cali-fornia’s incentive program, which the oth-er two are somewhat modeled on, he adds.

Whitaker and Atkinson point out that California has much stricter emissions standards than anywhere else in the U.S., and that’s why electric vehicles have pri-marily been deployed there.

The California Air Resources Board (CARB) gets recurring funding from a number of sources. The King’s Canyon buses and the TransPower conversions and chargers are nearly fully funded by state funding programs. Adomani and GreenPower also anticipate that their buses will be covered by funding from the state.

There are also continued rebates avail-able, especially in California, to provide signiicant cost reductions of electric buses where future purchases are often cheaper than diesel or natural gas buses. The state also ofers low interest rates (below 4%) and long-term inancing to help close the gap if districts can’t get suf-icient grant funding, Clements says.

However, what about school transpor-tation operators that aren’t in California?

The previously mentioned Massachu-setts pilot is being funded by an initiative of the Northeast and Mid-Atlantic states designed to reduce greenhouse gas emis-sions.

Clements says he get calls nearly weekly from pupil transportation pro-viders in states such as Colorado and New Jersey who are exploring electric bus options and looking for funding. Some have found partial support from foundations, as with the Vermont study. New Jersey and some Southern states have made funding available for projects using solar power.

Meanwhile, in Canada, the Quebec gov-ernment unveiled a grant of $125,000 per bus for any contractors and school districts that want to go electric, Page says.

As more school transportation provid-ers are able to get inancial support to buy the buses, test them, and realize the bene-its, they will gain traction, Reynolds says.

“If you see an electric bus now, it’s a rar-ity. In ive years, it will be commonplace. In 10 years, it will probably be the reverse: If you see a gas or diesel vehicle, [that] will be a rarity. I think the country is moving in that direction rather rapidly.”

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pilot may only be able to test vehicle-to-grid technology using solar panels at the districts that have them.

HurdlesNew England has another hurdle that California doesn’t: much colder winters.

California’s electric school buses have typically not been equipped with heat-ing units. However, because the Massa-chusetts Department of Motor Vehicles requires the buses to maintain a certain cabin temperature — for example, when it’s 20 degrees out, it has to be at least 60 degrees inside the bus — bus heaters are necessary. Heating the bus with an electric heater would drain the battery by about half of the bus’ range.

For that reason, VEIC is looking into installing a diesel or propane unit heater on the buses during the winter. Lion of-fers two diferent heating systems: an all-electric heating system that produces zero emissions, and a fuel-ire heater from Webasto or Proheat. The heaters can be powered by diesel, propane, or gasoline, Page says.

Electric buses may be safe, reliable, clean, quiet, and cheaper to operate, but they are still much more expensive to buy. The initial cost may put them out of reach for many districts without signii-cant funding.

An electric school bus costs about $100,000 to $120,000 more than a die-sel school bus; propane buses cost about $15,000 more; and CNG buses are about $40,000 to $45,000 more expensive, ac-cording to Adomani’s Reynolds.

However, while there is a signiicant diference between the capital cost of an electric bus and a diesel bus, that gap is going to close quickly over the next couple of years, Atkinson says.

Eventually, Goldman expects suppliers like TransPower to work with bus manu-facturers on high-volume factory line installation to continue to reduce prices. He also points to the possibility of battery rent-to-own or lease programs for lower monthly costs than buying diesel.

Funding availabilityIncentives that essentially make an elec-tric school bus the same price as a fossil fuel-powered bus abound in some areas.

Currently two U.S. states — California and New York — and one city — Chicago — ofer standing voucher programs that help ofset the cost of an electric bus. Moreover, the vouchers are adminis-tered through dealerships, so the school transportation provider doesn’t have any inancial risk, Motiv’s Castelaz explains.

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