Arista Power Inc. elected Ira A. Greenstein to its board of directors. Greenstein is currently president of Genie Energy Ltd., which, through its IDT Energy unit, supplies electricity and natural gas to residential and small business customers in New York, New Jersey, Pennsylvania and Maryland.
Genie Energy holds and manages interests in oil shale and other oil development projects in Colorado and Israel. IDT Energy is an independent residential energy service provider in New York State.
Greenstein currently also serves as counsel to the chairman of IDT Corp. and previously served as president of IDT from 2001 through 2011. He previously served as a director of IDT and general counsel and secretary of Net2Phone Inc.