(Rodrigo Abd | AP file photo) In this March 31, 2017, file photo, Dairy cattle feed at a farm near Vado, New Mexico. Virginia-based Dominion Energy and Vanguard Renewables Ag of Massachusetts announced in January 2020 a $200 million partnership to convert methane from cow manure into renewable natural gas. The money will fund projects at dairy farms in New Mexico, Colorado, Utah, Nevada and Georgia.