Yes, you can know your marks in UPPCL Technician Grade 2 Examination by filing RTI to them. Uttar Pradesh Power Corporation Limited (UPPCL) is the company responsible for electricity transmission and distribution within the Indian state of Uttar Pradesh. UPPCL is Uttar Pradesh State Government Undertaking.
Since it is Uttar Pradesh State Government Undertaking. Therefore, it comes under the ambit of section 2(h) of the RTI Act'2005 which has the definition of Public Authority. Hence, we can file RTI to UPPCL.
For further assistance and to have a better understanding on filing RTI, you may visit the below mentioned link:
https://onlinerti.com/how-to-file-rti-online-for-exam