The BSE benchmark Sensex was trading 15 points in red at 18,663 a shortwhile ago. Earlier the BSE benchmark Sensex recovered by over 116 points in early trade today as power sector stocks surged on fresh buying by funds and retailers after the government cleared proposal to restructure debt worth nearly 2 lakh crore rupees for state electricity boards.The Nifty at the National Stock Exchange down 6 points to 5,654.