Shares of Tata Power Company Ltd are trading at their key support level of Rs 218 today, a level which they briefly breached on the downside in the previous session. The stock has arrived the support level after a gap of 12 sessions. Tata Power stock hit an intraday low of Rs 217.55 on Thursday, before closing at Rs 219.50 on BSE. They touched an intraday high of Rs 221.50, also the opening level in the previous session.