UBS has upgraded Petronet LNG Ltd. to 'buy', raising the target price to Rs 400, driven by India's increasing LNG demand, projected to grow at 5.6% CAGR over the next three years. The company has secured five long-term LNG contracts starting in 2026, which will boost capacity by 4.2 MMTPA. With significant imports expected to meet 80-85% of the incremental gas demand, Petronet is well-positioned for growth, supported by terminal expansions and strong cash flow.