Plug Power (NASDAQ: PLUG) stock just keeps plugging ahead. It jumped as much as 15.5% today. Even though it pared those gains to 4.7% as of 12:15 p.m. ET, shares of the hydrogen fuel company are still about 35% higher over the past week.

Its stock has struggled over the last year, along with the stocks of other renewable energy companies. Plug's shares, though, have been hit particularly hard, as its cash reserves have been dwindling, and it announced last month that it reached an agreement with an investor to potentially issue another $1 billion worth of shares to raise capital. But a business update this week has investors thinking things may be looking up.

Today Plug Power announced its first shipment of liquid green hydrogen from its new hydrogen production plant in Georgia. The company said a truckload of liquid hydrogen was shipped from the plant to fuel forklifts for its customers Walmart, Amazon, and Home Depot.

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Source Fool.com