SPARKS, Nev.—JB Straubel, one of the founders of Tesla, is driving through acres of desert outside of Reno that are filled with stacks of old electric-car batteries he plans to recycle.

Less than two months ago, shares of Tesla Inc. were on their way to just the third losing year in the electric-vehicle ...

Straubel's company, Redwood Materials, is on track to make $200 million in revenue this year. Tesla's cofounder JB Straubel said he learned "a huge amount" from Elon Musk — and we could all benefit ...

Tesla’s first vehicle, the Roadster, launched in 2008, was a high-performance sports car that showcased the potential of ...