UPS agreed to purchase 10 million gallon equivalents of renewable natural gas (RNG) per year from Big Ox Energy. This is the largest investment in RNG to date for the company, and the agreement runs through 2024, UPS announced.

In addition to the agreement with Big Ox, UPS signed a five-year agreement earlier in 2017 with AMP energy for 1.5 million gallon equivalents of RNG per year from the Fair Oaks dairy farm in Indiana. The RNG agreements will help UPS reach a key sustainability goal to have 40% of its ground transportation fleet fueled from sources other than conventional gasoline and diesel by 2025.

“Natural gas is a proven alternative fuel to gasoline and diesel and is a key building block for our goal to reduce greenhouse gas emissions in our ground fleet,” said  Mike Casteel, UPS director of fleet procurement. “These agreements add significantly to our investment in the use of RNG and will help put us on track to nearly triple our annual use of RNG. They are also a direct reflection of our ongoing commitment to help shape the renewable natural gas industry.”

RNG, also known as biomethane, can be derived from many abundant and renewable sources, including decomposing organic waste in landfills, wastewater treatment, and agriculture. It is then distributed through the natural gas pipeline system, making it available for use as liquefied natural gas (LNG) or compressed natural gas (CNG).

UPS used 61 million gallons of natural gas in its ground fleet in 2016, which included 4.6 million gallons of RNG and is on track to use 14 million gallons of RNG in 2017. UPS drives more than 5,200 CNG and LNG vehicles in its fleet of alternative fuel and advanced technology vehicles. Earlier this year, UPS announced a more than $90 million investment in natural gas vehicles and infrastructure. This investment included an additional six compressed natural gas (CNG) fueling stations, 390 new CNG tractors and terminal trucks, and 250 liquefied natural gas (LNG) vehicles.