“Uber sees strong potential for clean vehicle technologies to deliver drivers and riders with more efficient, less-polluting mobility,” Uber General Manager for Oregon, Bryce Bennett said in a statement. “Ultimately this new initiative reflects our desire to move more people with fewer, fuller and more efficient vehicles. It will also provide added economic benefits to drivers.”

Uber said approximately 100 of its 6,000 drivers in the Portland area use electric vehicles. While that may not seem like much, the company says that ratio already outpaces the general population. Uber’s goal is to incentivize drivers to switch to electric vehicles, adding hundreds to its fleet.