Sir,
I need the list of electrical companies with email id and address, based on delhi and andhra pradesh

I'm sorry. This site is not able to supply that kind of information. Please go to a public library to obtain this.

This is a list of Electrical and Electronics companies in India (http://www.vcsdata.com/electrical-electronics.html?category=Electrical/Electronics), you will have to determine location and the information may not be up to date.