By Angela Chen, Wall Street Journal.

United Parcel Service Inc. agreed to use renewable natural gas from Clean Energy Fuels Corp. for some of its delivery fleet, as part of its plan to drive one billion miles using alternative fuel by the end of 2017.

Clean Energy Fuels produces a product called Redeem, which is the first renewable natural gas available in commercial quantities.

The RNG will be used in stations across California beginning this month to fuel tractors and delivery vehicles. The stations in Sacramento, Los Angeles and Fresno will provide about 1.5 million gallon equivalents of RNG fuel to about 400 vehicles in the state.