UPS today announced an agreement with Big Ox Energy to purchase 10 million gallon equivalents of renewable natural gas (RNG) per year. This is the largest investment in RNG to date for the company, and the agreement runs through 2024. In addition to the agreement with Big Ox, UPS signed a five-year agreement earlier this year 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: 40 percent of all ground transportation fleet fuel from sources other than conventional gasoline and diesel by 2025.