Hey Nitin,

You have got a solid pre MBA work ex in the Energy industry, however your GPA and GMAT score are on the lower end to make a competitive application. Would suggest that you give the GMAT another shot and maybe bump up the score beyond the 720 level to have a good chance at the PGPx programs in the IIMs.
Your career objective of being in the Renewable Energy is a solid goal given India's new RE targets and the vibrancy within the industry (particularly the new energy vertical). You can target some of the top Indian IPPs in a Corporate Strategy Function or even look at pursuing their leadership track (all have formed some sort of leadership development program). Management consulting post MBA will be competitive and may not be able to do justice to your level of experience and depth of knowledge within the industry since most positions are still relatively early career openings, hence its best to stick to a good corporate role with the RE space. Outside of the mentioned list of programs you can also explore the ISB PGP 1 year program and would also suggest researching some good EU options given the increasing emphasis those countries are paying decarbonization, you may find some really good career opportunities within the UK, Germany, Amsterdam and France all of which have some leading utilities who are pivoting to RE.

Drop a mail at info@thembaedge.com to have a detailed conversation! Cheers!