Inox Wind Infrastructure Services Limited4 . The parent concern, IWISL, was awarded a total of 250 MW project capacity, in Tranche-I in 5 packets each of 50 MW capacity in terms of the appellant – SECI’s Request for Selection dated 28.10.2016. These projects were to be executed under five different Special Purpose Vehicles5 viz. Wind One Renergy Pvt Ltd (50 MW), Wind Two Renergy Pvt Ltd (50 MW), Wind Three Renergy Pvt Ltd (50 MW), Wind Four Renergy Pvt Ltd (50 MW) and Wind Five Renergy Pvt Ltd (50 MW). Accordingly, respondent no. 1 – WFRPL, a wholly owned subsidiary of IWISL, and respondent no. 3 – Power Trading Company India Limited6 entered into a Power Purchase Agreement7 dated 21.07.2017 to establish a 50 MW wind power unit to generate and supply renewable (wind) power to PTC. The appellant – SECI is the implementing agency for the project, being the nodal agency of the Central Government to promote renewable energy such as solar, wind etc. The Scheduled Commercial Operation Date8 /commissioning was 04.10.2018, 18 months from the date of the Letter of Award9 dated 05.04.2017. Further, WFRPL was entitled to an additional time with liquidated damages and reduction in tariff of upto 9 months, that is till 05.07.2019. The commissioning deadline or maximum period allowed for