After his retirement from DMRC, Sreedharan has been appointed as Principal Advisor of the Kochi Metro Rail Project. Initially, the project faced hurdles when a controversy broke out with the government announcing a global tender process for Kochi Metro, rather than letting DMRC handle the consultancy and project execution as Sreedharan and DMRC had initially asked for. Vested interests in the government have been alleged in this decision. However, several political parties came out in opposition of the move, and backed Sreedharan's decision in enforcing DMRC's role in the Kochi Metro, after which the government reversed its stance. Kochi metro was finally unveiled on 17 June 2017 amidst much celebrations. The unveiling of the metro was considered a landmark event in India in terms of completion time, control systems used and initiatives such as employing transgender people, vertical gardening, respecting migrant laborers, and use of solar power.