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Proterra launches new Catalyst E2 series electric bus with nominal range of up to 350 miles

At the American Public Transit Association (APTA) Annual Meeting, Proterra unveiled the newest addition to its fleet of electric buses: the Catalyst E2 series, named for its Efficient Energy (E2) storage capacity of 440 - 660 kWh. Last month, an E2 series vehicle achieved a new milestone at Michelin’s Laurens Proving Grounds where it logged more than 600 miles (966 km) on a single charge under test conditions.

Its nominal range of 194 - 350 miles means the Catalyst E2 series is capable of serving the full daily mileage needs of nearly every US. mass transit route on a single charge and offers the transit industry the first direct replacement for fossil-fueled transit vehicles. The high-mileage Catalyst E2 series joins the existing Catalyst FC and XR series vehicles, designed for circulator and intermediate-mileage routes, respectively.

E2 battery configurations can be fully charged at the depot with industry standard J1772 CCS plug-in chargers.


Proterra’s primary goal has always been to create a purpose-built, high-performance electric vehicle that can serve every single transit route in the United States. Today, with the unveiling of the Catalyst E2 Series, that goal has been achieved. The question is no longer who will be an early adopter of this technology, but rather who will be the last to commit to a future of clean, efficient, and sustainable mobility. With the Catalyst E2 offering a no-compromise replacement for all fossil fuel buses, battery-electric vehicles have now broken down the final barrier to widespread market adoption.

—Ryan Popple, CEO of Proterra

With annual sales already 220% higher than 2015, Proterra is experiencing a breakthrough year in the mass transit sector and expects the debut of the Catalyst E2 series to only further increase this success.

To date, Proterra buses across the United States have completed over 2.5 million miles of revenue service, displacing 540,000 gallons of diesel, and eliminating nearly 10 million pounds of carbon emissions.



Proterra city e-buses have reached the critical minimum range for full day usage on about any route. Overnight slower charging will be enough to recharge for another full day use.

The next step would be to build an intercity long range (1000+ Km) e-bus. A small (100 KW) on board FC or more advanced batteries may be required.

It will come by 2020/2022?


And who is the battery supplier? Altairnano?


That would be one enormous battery fire!

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