US-based electric bus company Proterra. which numbers Daimler among its shareholders, has  passed a major milestone, selling its 1,000th electric bus, coming just a bit more than three years after after its 100th electric bus was delivered.

Proterra’s 1,000th electric bus was bought by a county transit authority in Florida, which bought 12 buses from the company — 13metre (40 foot Proterra ZX5  battery-electric transit buses. Each bus has a 660 kWh battery onboard, which allows the bus to offer more energy storage and driving range than any other 40-foot electric bus in North America.

The bus’s DuoPower powertrain delivers nearly twice the horsepower and five times better fuel efficiency than a standard diesel engine according to Proterra. The horsepower figure is 550 HP thanks to two electric motors, which give the bus the capability of quickly getting off the line and getting to 30km/h in less than six seconds.

“Manufactured in the United States, Proterra battery-electric buses feature zero tailpipe emissions, saving approximately 230,000 pounds of greenhouse gases annually when replacing a diesel bus,” the company said. “The purpose-built electric buses offer a quieter ride for reduced noise pollution, greater efficiency, and lower operating costs with fewer parts compared to combustion engine vehicles.”

The 1,000 plus Proterra electric buses now on the road have travelled more than 25millions kms, according to the company. Combine that with all the pollution-free idling and the company has certainly helped reduced numerous diseases and premature deaths from air pollution — and many more will be saved in the future.

“Delivering clean, quiet transportation for all is an opportunity to meet the needs of our communities while protecting our environment and public health. With more than 1,000 battery-electric buses sold, Proterra is driving this transition to 100% clean transportation. Together with innovative transit leaders like Broward County, we are demonstrating that the time for clean transportation is now,” said Proterra CEO Jack Allen.