Markets may open flat on Wednesday with eyes on the GST Council's two-day meet on rate rationalisation. Stocks on watch include TCS, which bagged a 550 million euro Tryg deal, JSW Cement posting a wider loss on one-off charges, Adani Power gaining mine clearance, MOIL's record output, and E2E's ₹177 crore GPU order. IPO and earnings updates may add volatility.