Duke Energy Corp. on March 25 filed a post-effective amendment to its registration statement to include additional classes of securities for potential sale.

The amended registration covers the potential sale of an unspecified amount of Duke Energy's common stock, preferred stock, depositary shares and debt securities, from time to time. It also covers the sale of debt securities by Duke Energy Carolinas LLC, Duke Energy Florida LLC, Duke Energy Indiana LLC, Duke Energy Ohio Inc., Duke Energy Progress LLC and Piedmont Natural Gas Co. Inc.

Duke Energy plans to use net proceeds for general corporate purposes, which may include acquisitions, debt repayment, capital expenditures and working capital. Pending use for their stated purpose, net proceeds may be invested temporarily in short-term securities or applied to repay short-term debt.