The council voted to raise no objections to a£1bn project, which, if approved, will see the construction of the first coal-fired power station in Britain for more than 30 years.
Scientists and environmental groups, including Greenpeace, have condemned the plans, and the council has received 10,000 complaints.
But Medway claims it has not put economic gain before ecological concern, pointing to 26 conditions it has recommended including using excess heat generated by the station to heat one million homes and a public enquiry so critics can voice concerns.
Robin Cooper, the council’s director of regeneration and development, added: “The station will be significantly cleaner than the current station.”
The council pointed to the Meeting the energy challenge white paper, which outlines plans for 14% of the UK’s energy to be coal produced by 2020.
The project still needs approval from business, enterprise and regulatory reform secretary John Hutton.