IGL to supply CNG for DTC buses till 2030, India April 1, 2021 | Asia Pacific Company News Indraprastha Gas Limited (IGL) has signed a long-term agreement to supply compressed natural gas (CNG) to Delhi Transport Corporation (DTC) for its buses till December 2030. IGL is the largest CNG dis... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password