Sacramento County, Calif. has begun using renewable diesel to fuel many of its heavy-duty vehicles, including more than 400 municipal public works trucks and specialty vehicles. In making the switch, the county expects to reduce greenhouse gas emissions by up to 80%, an estimated 8,000 tons annually, according to its fleet manager.

The county partnered with Neste Renewable Diesel for the switch. Neste also provides renewable diesel for San Francisco and Carlsbad as well as Google and UPS.

"Migrating to Neste Renewable Diesel provides us immediate huge gains in carbon emissions reduction that we could not otherwise achieve without significantly increased investments in alternative-fueled vehicles and infrastructure," said Keith Leech, Sacramento County's fleet division and parking chief.

A number of West Coast fleets have made the switch to renewable diesel, including San Francisco, Carlsbad, and Alameda and San Joaquin counties in California and Corvallis, Oregon.