Yes, you can file RTI Application to Chennai Petroleum Corporation Limited. Chennai Petroleum Corporation Limited (CPCL) a Group company of Indian Oil Corporation (IOCL) is an Indian state-owned oil and gas corporation headquartered in Chennai, India.
Since is an Indian state-owned oil and gas corporation headquartered in Chennai, India, therefore it comes under the purview of section 2(h) of the RTI Act'2005 which has definition of Public Authority. Hence, we can file RTI application to Chennai Petroleum Corporation Limited.
To have a brief idea about filing RTI Application to Chennai Petroleum Corporation Limited. You may visit the following link:
https://onlinerti.com/how-to-file-rti-online-for-center