BIAL, with a LEED Gold certification has a solid waste management plant that produces, per day, 25 tonnes of sustainable bio-energy that can generate electricity to power about 5,000 households each year. The installed solar power plants generate 3.6 megawatts, reducing carbon emission by 3,125 tonnes per annum. Other initiatives include battery-operated vehicles and rainwater harvesting.
DIAL is a LEED Gold certified green building. Some of its initiatives include a 7.84 MW solar PV plant installation in the airside. The “zero discharge” sewage treatment plant treats all waste water generated at the airport, which is reused for horticulture and to flush toilets. The airport's carbon emission has been reduced by 55 per cent in 2017 as compared to emissions in 2010.
GHIAL has a “green” passenger terminal building with a LEED Silver certification, a ranking by the US Green Building Council. It is on its way to becoming an airport with 100 per cent LED lighting. Halogen lights hemming the taxiway have been replaced by energy e icient LED lamps. The 10 MW solar power plant feeds GHIAL’s daytime energy requirements. Water harvesting is practised on a large scale.