Clean transportation for mass transit is growing all around the world. Sales of hybrid and electric buses will grow at a compound annual growth rate of 20.6% by 2020, according to Frost & Sullivan’s latest research focused on the global heavy-duty transit bus market.

Leading innovation and adoption is taking place in China and Europe. China’s high pollution levels demand urgent and dramatic solutions. Europe has developed a legal framework that is pushing local administrations to adopt clean vehicle fleets. The United States has the highest potential growth for clean public transportation.

We believe that growth could be higher than forecasted. Electric busses equipped with supercapacitors can connect to the electric grid at every bus stop to recharge their battery packs. The energy stored while passengers hop on and off the bus is enough to get to the next stop, where the batteries are recharged again.

Liquid supercapacitors currently utilized to power buses have low energy density which limits the distance between stops.