Proterra’s All-Electric Bus.

In April 2015, the California Energy Commission awarded a $3 million grant to Proterra to fund the design, development, and construction of a state-of-the-art manufacturing facility for its zero-emission, all-electric transit buses in California's San Gabriel Valley.

By June 2015, Proterra had raised an additional $55 million from private investors and received purchase orders from 15 local transit authorities for the electric buses. As of January 2017, the company had 36 customers and 377 orders. During the term of the Energy Commission grant, Proterra is estimated to manufacture and sell 424 buses, reducing more than 900 million pounds of carbon dioxide.

Proterra is a world leader in designing and manufacturing zero-emission, heavy-duty vehicles. Its Fast Charge bus features a battery pack that recharges in less than 10 minutes with an approximate range of up to 50 miles between charges. A newly introduced battery pack has a range of 251 to 350 miles per charge, with recharge taking 3.5 to 5 hours.

See more information about the Proterra Electric Bus Facility.

Proterra battery bus showing options team of workers celebrating with large battery pack in foreground Proterra's all electric bus.

Photos courtesy of Proterra.



  • Proterra buses produce zero tailpipe emissions and have zero direct local impact on pollution.

  • Local transit authorities can save up to $135,000 in maintenance-related costs over the lifetime of the bus, since there is no conventional engine or exhaust system.

  • Charging Proterra buses costs as low as 19 cents per mile, compared to 60 to 85 cents per mile for fueling CNG, diesel, and hybrid heavy-duty vehicles.

Type of Project

Zero-Emission Vehicle Manufacturing

ARFVTP Award Amount

$3 million


Testing is ongoing through November 2017, with project completion expected in December 2018.


The Proterra Electric Bus Facility is located in the San Gabriel Valley, California


Altex Biofuel System

Biofuels: Early & Pre-Commercial Technology

California Community Colleges
Chancellor's Office

Workforce Development

City of Torrance -
"One Mile, One Charger"

Electric vehicle charging infrastructure

Crimson Biodiesel Facility


CR&R Anaerobic Digester

Renewable Natural Gas Production

FirstElement Hydrogen Refueling Stations

Hydrogen Refueling Stations

John L. Sullivan Workforce Training

Workforce Development

Los Angeles Harbor Department

Advanced Medium- and Heavy-Duty Vehicle Demonstration

Plug-In Electric Charging Infrastructure

Plug-in Electric Vehicle Charging Infrastructure

Proterra Electric Bus Facility

Zero-Emission Vehicle Manufacturing