VERIFIED PETITION OF DUKE ENERGY INDIANA, LLC, FOR (1) PERMANENT RE-APPROVAL OF THE VOLUNTARY GOGREEN RIDER NO. 56; (2)THE ADDITION OF A COMMERCIAL AND INDUSTRIAL VOLUNTARY OFFERING; (3) CONTINUATION OF ALTERNATIVE REGULATORY PLAN FLEXIBILITY PURSUANT TO IND. CODE § 8-1-2.5-1 ET SEQ., INCLUDING FLEXIBILITY TO MODIFY THE PRICE, BLOCKS AND PARTICIPATION