registration required or not

Maganti Ramakrishna (51 Points)

22 May 2017  
I have a manufacturing factory in Telangana State and also a power plant. due to some reasons we are not in position to Start manufacturing activity and hope to continue the same for some more time. mean while I am meeting employee​ salaries by selling power.
my question are
1. Shall I required to register in GST?
2 If required what will be rate of tax for sale of power, as the power is not covered in GST.