Juneau's first electric bus, parked in the Capital Transit garage on April 8, 2021. The bus has experienced some mechanical and battery problems since entering service last spring. (Dana Zigmund / Juneau Empire File)

Plugging along: Electric bus faces mechanical issues

City remains committed to electrifying its fleet.

Capital Transit’s electric bus is sputtering.

According to a memo shared with the City and Borough of Juneau’s Public Works and Facilities Committee this week, the state’s first municipally operated electric bus has experienced mechanical problems and isn’t holding battery charges long enough to complete an entire route during cold winter weather.

But, city officials say they remain committed to electrifying more of the city’s bus fleet.

“The tech is just improving so quickly, We’re confident (electric buses) are a good fit for the community. Like anything new there’s a lot to figure out,” said Katie Koester, director of the CBJ Engineering and Public Works Department, during the Public Works and Facilities Committee Monday.

The 40-foot bus, manufactured by Proterra, has been out of service periodically due to mechanical problems.

A powertrain wiring harness issue recently sidelined the bus for six weeks between Thanksgiving and New Year’s Day.

Although that issue is now fixed, according to the memo, more minor problems — such as issues related to the windshield wipers– still plague the bus.

[Smooth sailing for the 2022 season?]

But, the battery issues are most significant. Koester told the committee that January’s freezing temperatures have been particularly rough.

“The bus was expected to have a battery range of 210 miles which is roughly 10 hours on a bus route. In practice, the bus has only exhibited a range of 170 miles or 8 hours on a route during ideal summer weather conditions. During cooler fall weather the range was reduced to 150 miles or 6 hours on route and approximately 120 miles (or 5 hours) in January,” the memo reads.

Richard Ross, transit superintendent, explained that the colder it gets outside, the more energy is needed to heat the inside of the bus–which drains the battery’s efficiency.

Based on the reduced battery capacity, Capital Transit workers must swap out the bus before completing an entire 8-hour shift.

In addition, because of the length of the bus, it can’t run some routes that require a tighter turning radius. The electric bus is too long to service riders on Douglas. So, the electric bus mostly runs the commuter routes between downtown and the Mendenhall Valley.

Capital Transit’s electric bus leads the charge at an Earth Day Electric Vehicle Road Rally. The bus has been plagued by mechanical maladies, but city officials remain committed to electrifying the city’s streets. (Ben Hohenstatt / Juneau Empire File)

Capital Transit’s electric bus leads the charge at an Earth Day Electric Vehicle Road Rally. The bus has been plagued by mechanical maladies, but city officials remain committed to electrifying the city’s streets. (Ben Hohenstatt / Juneau Empire File)

Looking forward

City officials say they are looking at other manufacturers and checking with cities in colder climates to learn more about electric bus performance before agreeing to purchase additional vehicles.

Currently, Capital Transit has a grant pending with the Federal Transit Administration and the Alaska Department of Transportation and Public Facilities to purchase seven additional electric buses.

According to the memo, there’s currently a 12-to-18-month lag between when a city orders an electric bus and the manufacturer delivers the bus.

Gillig and New Flyer also manufacture electric buses. Gillig made the city’s fleet of diesel buses.

[How to weigh in on options for a new City Hall]

About the electric bus

Last April, the electric bus started carrying passengers after a ribbon-cutting ceremony attended by state and local officials, including Gov. Mike Dunleavy, state Sen. Jessie Kiehl, Juneau Mayor Beth Weldon and Alaska Department of Transportation and Public Facilities Commissioner John MacKinnon.

U.S. Sen. Lisa Murkowski, who called the bus’s introduction “a great step forward for Juneau,” appeared in a video message at the event.

Because the bus is powered by hydroelectric, Weldon said the bus would “run on rain,” a plentiful resource in Juneau.

During his remarks, Dunleavy said the electric bus is a “terrific bargain” as it only costs about 5 cents a kilowatt-hour to charge the 40-foot vehicle, which seats 40 people and can accommodate larger standing crowds if needed.

“Based on cheap electricity and with the added benefit of clean air, this is a win-win across the board,” he said. “Congratulations to Juneau for doing something very special for Alaska and Juneau.”

• Contact reporter Dana Zigmund at dana.zigmund@juneauempire.com or 907-308-4891.

More in News

Michael Penn / Juneau Empire File
The Aurora Borealis glows over the Mendenhall Glacier in 2014.
Aurora Forecast

Forecasts from the University of Alaska Fairbanks’ Geophysical Institute for the week of March. 19

The FBI Anchorage Field Office is seeking information about this man in relation to a Wednesday bank robbery in Anchorage, the agency announced Thursday afternoon. Anyone with information regarding the bank robbery can contact the FBI Anchorage Field Office at 907-276-4441 or tips.fbi.gov. Tips can be submitted anonymously.  (FBI)
FBI seeks info in Anchorage bank robbery

The robbery took place at 1:24 p.m. on Wednesday.

Kevin Maier
Sustainable Alaska: Climate stories, climate futures

The UAS Sustainability Committee is hosting a series of public events in April…

Reps. Tom McKay, R-Anchorage, and Andi Story, D-Juneau, offering competing amendments to a bill increasing the per-student funding formula for public schools by $1,250 during a House Education Committee meeting Wednesday morning. McKay’s proposal to lower the increase to $150 was defeated. Story’s proposal to implement an increase during the next two years was approved, after her proposed amounts totalling about $1,500 were reduced to $800.
Battle lines for education funding boost get clearer

$800 increase over two years OKd by House committee, Senate proposing $1,348 two-year increase

A call for a joint session of the Alaska State Legislature to cast a vote that would reject recently-approved salary increases for legislators and top executive branch officials is made by State House Speaker Cathy Tilton, R-Wasilla, during a press conference Tuesday. Senate President Gary Stevens, R-Kodiak, rejected the joint session in a letter to Tilton on Wednesday. (Mark Sabbatini / Juneau Empire)
House efforts to nix legislative pay raises hit Senate roadblock

Call for a joint session rejected by upper chamber, bills to overturn pay hikes may lack support

A simulated photo shows the tailings stack and other features of Hecla Greens Creek Mine under the most aggressive of four alternatives for expanding the mine in an environmental impact assessment published Thursday by the U.S Forest Service. The tailings stack is modestly to drastically smaller in the other alternatives. The public comment period for the study is from March 24 to May 8. (U.S. Forest Service)
New study digs into alternatives for Greens Creek Mine expansion

Public comment starts Friday on four options that could extend mine’s life up to 40 years

This image shows the Juneau Lions Club Gold Medal Basketball Tournament's logo. The club is looking for submissions of logos for the historic tournament's 75th anniversary. The winning artist will receive a $250 prize. (Screenshot)
Take your shot at a Gold Medal logo

Upcoming milestone prompts call for art.

(Michael Penn / Juneau Empire File)
Police calls for Thursday, March 23, 2023

This report contains information from law enforcement and public safety agencies.

The Juneau School Board recently announced the three finalists for the district’s superintendent position: Frank Hauser, Carlee Simon and Thom Peck. The district is hosting a public forum from 6 to 7:30 p.m. on Monday, March 27 at Thunder Mountain High School for students, parents and staff to meet the three candidates. Additionally, the trio will be interviewed by the school board on Tuesday, March 28. (Clarise Larson / Juneau Empire File)
School district announces finalists for superintendent post

Public forum and interviews scheduled for next week.

Most Read