Current Proterra customer Foothill Transit to buy 12 new buses to fully electrify a major route

GREENVILLE, S.C., September 5, 2013 – Proterra Inc., the leading provider of zero-emission battery electric transit solutions, has completed the largest-ever U.S. sale of Altoona-tested heavy-duty electric buses to Foothill Transit, a joint powers authority of 22 member cities in the San Gabriel and Pomona Valleys in Southern California. In 2011, Foothill Transit became the first transit agency in the United States to use on-route charge electric buses by purchasing and operating Proterra buses. Based on strong performance and return on investment of those vehicles, the agency has decided to purchase an additional 12 buses from Proterra to completely electrify its 291 route, which travels between LaVerne and Pomona.

Although popular throughout the United States for reduced cost of ownership and sustainability, zero-emission electric buses are of particular interest in California, where there are many environmental non-attainment zones and California Air Resource Board (CARB) regulations in play.

"The Foothill Transit order is a clear vote of confidence and confirmation that Proterra buses truly deliver the lowest total cost of ownership and smallest carbon footprint of any transit bus on the market," said Garrett Mikita, president and chief executive officer, Proterra Inc. "Foothill Transit was our first customer and the first U.S. transit agency to go electric with on-route charging, so we are thrilled that they have seen the value of expanding their electric fleet and will use Proterra buses to do so."

The Foothill Transit sale is the latest in a wave of new orders for Proterra, with the company's last three sales to transit systems coming from repeat customers. Recently, StarMetro of Tallahassee purchased an additional three EV buses from Proterra, increasing their EV fleet size to five, and the Worcester Regional Transit Authority in Massachusetts doubled its initial three bus order to six.

"We had high hopes when we first made the decision to use these innovative fast-charge EV buses," said Foothill Transit executive director, Doran Barnes. "These electric buses have more than delivered on our expectations in terms of cost savings and sustainability. We're looking forward to launching our—and our region's—first all-electric bus line. This is the future of zero-emission buses, and we're proud to be on board."

To keep pace with this growing demand, Proterra has doubled its production workforce, installed a second production line, added a second shift and grown its sales staff significantly.

About Foothill Transit

Foothill Transit is entering its 25th year of serving the San Gabriel and Pomona Valleys in Los Angeles County. Its 314-bus fleet covers over 300 square miles each year, carrying 14 million passengers. For more information, visit www.foothilltransit.org.

About Proterra

Proterra is a leader in the design and manufacture of clean technology and clean energy, providing zero emission vehicles that enable bus fleet operators to significantly reduce operating cost while delivering clean, quiet power to the community. The EcoRide™ is the world's first battery electric bus with fast charge enabled infinite range. With unmatched durability and energy efficiency based on rigorous industry testing at Altoona, the Proterra product is proudly made in America and based in Greenville, SC. For more information about Proterra, please visit www.proterra.com.