According to an Economic Times report, the government will install 200 megawatt solar and wind plants at the ports by 2019. Around 75 percent of the total output will be generated via solar panels, with the remainder falling to on and off-shore wind farms. Should it be a success, officials believe capacity could be expanded to 500 megawatts in the following years.

"These renewable energy projects will help in the reduction of carbon emission and lead to improvement of environment around the ports," a government official said. "All our ports are cash-rich [...] The ports have started the process of setting up renewable energy projects from profits."

The project won't come cheap, with early estimates reaching 500 crore (or $77.6 million). However, it will build upon the Indian government's Green Port initiative launched early last year. The project is designed to reduce carbon emissions and offset the cost of purchasing power from the national grid, boosting the government's pledge to increase the share of renewable sources in its overall energy strategy.