JSW Energy shareholders are up 2.5% for the year (even including dividends). But that was short of the market average. It's probably a good sign that the company has an even better long term track record, having provided shareholders with an annual TSR of 36% over five years. It may well be that this is a business worth popping on the watching, given the continuing positive reception, over time, from the market. It's always interesting to track share price performance over the longer term. But to understand JSW Energy better, we need to consider many other factors. For example, we've discovered 1 warning sign for JSW Energy that you should be aware of before investing here.