The New York Power Authority (NYPA), officially the Power Authority of the State of New York, is the largest state public power organization in the United States. NYPA provides some of the lowest-cost electricity in the nation, operating 16 generating facilities and more than 1,400 circuit-miles of transmission lines. Its main administrative offices are in White Plains. NYPA uses no state tax dollars and incurs no state debt, financing its projects principally through the sale of bonds. The bonds are repaid and the projects operated using revenues from operations.