MIECO's got the power, but it's willing to make a swap. The subsidiary of Marubeni trades in petroleum products, natural gas, and electricity; it also offers transportation and risk management services, as well as marketing and trade financing. The company's customers include utilities, independent power producers, and other energy-related companies. The petroleum products trading group, set up in 1985, has been the cornerstone of MIECO. Other activities include product terminalling and fuel oil marketing. MIECO INC., which has offices in California, New Jersey, and Texas, serves supply and distribution needs in the American and Pacific Rim markets.