Washington State Ferries, which runs the second-largest ferry system in the world, is switching from diesel to batteries amid a growing trend toward electrification in shipping.

“This is a good idea because it quiets the boats [while] obviously removing tons of diesel fuel emissions. But even if you’re not an environmentalist, this is a good idea for the taxpayer because we expect it to pay for itself relatively quickly, based on the price of fuel. It saves millions of dollars annually.”

Source: World’s Second-Largest Ferry Operator Switching From Diesel to Batteries