The City of Santa Monica, Calif.’s Big Blue Bus (BBB) announced it has become one of the country’s first municipal transit authorities to convert its fleet to renewable natural gas, rated 90% cleaner than diesel and is considered the cleanest transportation fuel available.

Earlier this year, BBB modified its original agreement with Clean Energy Fuels Corp. to transition the supply of liquefied natural gas (LNG) for its fleet to Clean Energy’s Redeem™ renewable LNG, which is non-fracked methane harvested from organic waste in landfills.

With the announcement, BBB unveiled a new bus ad campaign called “Bigger, Bluer, Skies” to emphasize the lower emissions and sustainability of this type of fuel.

BBB has been fueling its LNG and compressed natural gas (CNG) fleet of motorcoaches with fuel supplied by Clean Energy since 2012. The process of harvesting and processing Redeem™ provides a product that has fewer impurities than conventional natural gas and is a cleaner burning fuel source.

“City Council has voiced its support for non-fracked, sustainable sources of fuel, and Redeem™ delivers a fuel made entirely of waste; a more sustainable product at an equal cost. This makes BBB’s partnership with Clean Energy to use the Redeem™ fuel a win-win solution,” said BBB’s Transit Director Ed King.