JSW Steel Ltd. (BSE: 500228, NSE: JSWSTEEL) is an Indian steel company owned by the JSW Group based in Mumbai, Maharashtra, India. JSW Steel, after merger of ISPAT steel, has become India's largest private sector steel company with an installed capacity of 14.3 MTPA.As part of the US $18 billion O. P. Jindal Group, JSW Group has diversified interests in steel, energy, minerals and mining, infrastructure, cement and information technology.