MARTA picked St. Patrick’s Day to start trying out an all-electric bus.

The bus is made by Proterra, a Silicon Valley company with its manufacturing base in Greenville, S.C. It has a nominal range of about 60 miles, but it has a “fast charge” capability of 10 minutes or less.

“Right now, this is a demonstration,” said Michael Hennessy, regional sales director for Proterra in Greenville. “We will be here for the next 30 days. We have brought in a portable fast-charger for the demonstration.”