Today, Volta offers both wholesale and retail gasoline with over 75 years of experience. We serve five major brands, Shell, E ... xxon/Mobil, Sunoco, Gulf, and Citgo in addition to two of our own brands Rapid Refill and Garrett’s Family Market. Volta services stations and commercial customers throughout New England. Our 18 retail stores reach from Cranston, RI to Loudon, NH and everywhere in between. No matter where you find us, you can count on us to deliver total service you can trust. read more