dated 5.8.2009 admittedly, is not a subject matter either in Appeal No.17 of 2012 or in the present Review Petition No.12 of 2012. As a matter of fact, only in pursuance of the declaration and consequential directions given by this Tribunal in judgment dated 5.8.2009, the order had been passed by the State Commission on 29.11.2011 ordering for the refund. So, the validity and propriety of the judgement dated 5.8.2009 cannot be agitated before this Forum as we are only concerned with the Review of our judgment dated 20.9.2012 in Appeal No.17/2012. While justifying the order passed by the State Commission by the order dated 29.11.2011, this Tribunal in Appeal No.17 of 2012 had necessarily to refer to the declaration and consequential directions issued by this Tribunal in the judgment dated 5.8.2009. As stated earlier, the State Commission set aside the change of methodology by the order dated 4.11.2006. While the same was challenged by the Appellant before this Tribunal in Appeal No.74 of 2007, this Tribunal by the judgment dated 5.8.2009 had not only confirmed the order of the State Commission dated 4.11.2006 but also upheld the retrospective applicability of the consequential relief through the following observations: