India, Feb. 12 -- The Central Pollution Control Board (CPCB) has told the National Green Tribunal that all four of Delhi's waste-to-energy (WTE) plants hold valid consent to operate, though minor non-compliances persist at three of the facilities, according to an affidavit filed before the tribunal on February 9.

The submission, which outlines the status of WTE plants across nine states and one union territory, states that units in Delhi were operating with valid consent issued under the Water Act and the Air Act, along with authorisation under the Solid Waste Management Rules, 2016. It also noted that each plant "was reported to be complying with minimum operating temperatures in the secondary combustion chamber," a key parameter to ens...