State-run Power Grid Corporation has posted a whopping 59 per cent jump in net profit at Rs 1,126 crore for the second quarter ended September 30,2012. The company had reported a net profit of Rs 709 crore during the corresponding quarter ended September 30,2011,an official release said. Total income of the company rose to Rs 3,243 crore in July-September,2012,up 32 per cent from Rs 2,459 in the corresponding quarter of previous year. At present,the company is operating more than 96,216 circuit km of transmission lines along with 158 Sub-stations with transformation capacity of about 1,51,303 MVA (mega volt ampere). The existing Inter-Regional power transmission capacity is about 28,000 MW and the average system availability is maintained at above 99 per cent. The company has a capex plan of Rs 20,000 crore for the current financial year. The country suffered its worst power crisis ever,during this quarter (July-September),as three grids northern,eastern and north-eastern collaped on July 31. This failure left half of the country's 1.2 billion population powerless for hours. Shares of the company were trading at Rs 116.65 apiece,up 2.28 per cent on the BSE.