In the matter of Petition under Section 86 (1) (b) of the Electricity Act,2003 seeking for the approval of the Commission for Third Supplemental Agreement to the PPA dated 26.02.2007 with the Respondent M/s ACB ((India) Limited for incorporating discount in fixed energy tariff towards generation of power for utilization of the coal allocated under Shakti Scheme B (ii) Round 3 of Government of India.