Plug Power Inc. (NASDAQ:PLUG) experienced a significant surge in its stock price by 25.35% following the news of deepening its partnership with a US-based industrial gas company for the supply of liquid hydrogen through 2030. The partnership focuses on improving network efficiency, lowering costs, and ensuring a stable supply of domestically produced hydrogen for Plug Power's operations. CEO Andy Marsh emphasized the importance of reliable supply and cost efficiency in scaling their applications business and fostering long-term customer partnerships. Plug Power is actively expanding its hydrogen generation network across various states like Georgia, Tennessee, and Louisiana to cater to the increasing industry demand. With plans to establish 40 new sites this year alone, the company is gearing up for anticipated growth in the sector in the coming years. While the article mentions the potential of Plug Power as an investment, it also hints at other AI stocks with promising returns. It suggests that some AI stocks might offer higher returns with limited downside risks compared to PLUG. However, the extended hydrogen supply contract and Plug Power's commitment to building a robust hydrogen network reflect positively on the company's future prospects in the renewable energy sector.