** Shares of CESC NSE:CESC rise as much as 3% to 161.88 rupees
** CESC says gets approval for power purchase deal with Tata Power NSE:TATAPOWER for 75 MW power on medium-term basis
** Financial details not disclosed
** Avg rating of 10 analysts on CESC is the equivalent of "buy", median PT is 207.50 rupees - data compiled by LSEG
** Stock last up ~2%, cutting YTD loss to about ~14%