hi,

yes, odisha school of mining engineering, keonjhar offers 3 years polytechnic diploma course in electrical engineering.

however there is many more diploma government engineering colleges situated in the state of odisha. you may follow the below link to know about other colleges,

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?branch=Electrical%20Engineering&degree=Diploma&ownership=Public/Government&state=Odisha