Plug Power stock gains on recurring hydrogen revenue and 2025 results

Plug Power stock (Plug Power, ISIN US72919P2020) is anchored by 2025 numbers that remain central for investors: the company reported $628.1 million in revenue for fiscal 2025, $197.3 million in revenue for the fourth quarter of 2025, and a gross margin of negative 81% for the full year. Those figures came from Plug Power's 2025 results and investor presentation dated 2025, and they frame the debate around scale, cash burn, and operating leverage.

Revenue and margin pressure

The full-year revenue figure of $628.1 million compares with a much more difficult profitability profile, because the same 2025 report showed a gross margin of negative 81% for the year. The fourth quarter contributed $197.3 million of revenue, which means nearly one-third of the year's sales came in the final quarter.

For investors, that mix matters more than the top line alone. A company can post a higher quarterly revenue run rate and still struggle if the gross margin stays deeply negative, as Plug Power did in 2025.

2025 still sets the base

The most recent report gives a clear base line for the stock: $628.1 million in full-year revenue, $197.3 million in Q4 revenue, and a gross margin of negative 81% for the year. Those three figures are the numbers the market has to measure any later recovery against.

A better comparison point will come from future quarters, but the 2025 results already show the scale problem. The company is still building revenue, yet the margin structure remains the main obstacle to durable earnings power.

Hydrogen systems and sales mix

Plug Power's product story is still tied to hydrogen infrastructure, electrolyzers, fuel-cell systems, and related service revenue. That mix matters because the company has been trying to convert project deployment into recurring commercial activity rather than one-off equipment sales.

In that context, the fourth quarter's $197.3 million revenue figure is more useful than a generic product description. It shows the business can generate material quarterly sales, but the negative 81% gross margin for 2025 shows why scale alone has not yet translated into healthy unit economics.

What the stock is pricing

The stock narrative now rests on whether future reporting can improve the relationship between revenue and margin. The 2025 figures - $628.1 million for the year, $197.3 million for Q4, and negative 81% gross margin - leave little room for loose interpretation.

That is why the next report will matter more than a broad industry story. Plug Power stock is trading against a known financial base, not a blank slate.

Fuel-cell products stay central

Plug Power's core offering still revolves around hydrogen and fuel-cell products for material handling, electrolyzers, and related service work. That product mix is the commercial engine behind the reported revenue, even though the 2025 margin profile shows the business is not yet converting volume into profit.

Stock context

On the latest available company base, the relevant market question is whether revenue can keep rising faster than costs. The 2025 revenue of $628.1 million, the Q4 figure of $197.3 million, and the full-year gross margin of negative 81% provide the benchmark.