JSW Energy Ltd is expanding its operating capacity significantly over the next few years through various projects. The company expects to enhance capacity to nearly 11,500MW by 2015-16 from the current 995MW. Revenue is projected to grow at a CAGR of 58% through FY2012. The report recommends a 'Buy' rating based on a fair value of Rs. 145 per share using a FY2012 P/E multiple of 15 times. Key risks include uncertainty in merchant power rates and imported coal prices.