What Plug Power Inc. told the SEC could break it.

Plug's hydrogen economics lean heavily on monetizing clean-energy tax credits and similar incentives (e.g. IRA hydrogen production/investment credits) and on federal financing discussions with the U.S. Department of Energy. It warns that its ability to monetize these credits may be limited, delayed or subject to challenge, which could adversely affect liquidity and results. Because the policy regime is nascent and politically contested, a rollback or restriction of clean-energy incentives is a direct, material policy exposure to Plug's project and operating economics.

“clean energy tax credits and similar incentives may be limited, delayed or subject to challenge, which could adversely affect our liquidity and results of operations”

Plug sources components and subsystems from suppliers located outside the United States, exposing it to tariffs, duties, customs delays and domestic-content sourcing requirements. It specifically cites the wave of new U.S. tariff and trade measures since 2025 — including a temporary global tariff imposed under Section 122 of the Trade Act of 1974 announced in February 2026 — as a direct cost/availability threat to imported components used in its electronics, manufacturing and energy infrastructure. A concrete, statute-cited trade-policy channel into a hardware manufacturer's cost base.

“since 2025 and into 2026, the U.S. government has announced and implemented multiple new tariff and trade measures and has deployed alternative statutory authorities to reconfigure the U.S. tariff policy, including a temporary global tariff under Section 122 of the Trade Act of 1974 announced in February 2026.”

Plug Power's PEM electrolyzers depend on platinum-group metals, and specifically iridium, which is a distinctive and structurally constrained input. Iridium is produced primarily as a by-product of platinum and nickel mining and has limited sources of supply, so even modest demand increases or production disruptions can drive outsized swings in price and availability. Industry efforts to reduce iridium loadings in PEM electrolyzers are unproven. This is a concrete, named commodity-supply channel that separates Plug from a generic 'rising input costs' disclosure and is directly tied to its electrolyzer roadmap.

“Because iridium is produced primarily as a by-product of platinum and nickel mining and has limited sources of supply, even modest increases in demand or disruptions in production could have an outsized impact on pricing and availability.”

Plug Power's revenue is materially concentrated in a few large customers. For FY2025, two customers individually exceeded 10% of total consolidated revenues — one at $171.8M (24.2%) and one at $101.7M (14.3%) — and a single customer represented $48.9M, or 36.3%, of consolidated accounts receivable (up from 24.5% a year earlier). The 24%+ top-customer share has persisted across years (one customer was 23.4% in 2023). Customers are unnamed in the filing, so this registers as a concentration risk rather than a named edge; loss or distress of the top customer would significantly hit revenue and receivables.

“For the year ended December 31, 2025, two customers individually exceeded 10% of total consolidated revenues. One customer accounted for $ 171.8 million, or 24.2 %, and one customer accounted for $ 101.7 million, or 14.3 %, of total consolidated revenues.”

Beyond the iridium/PGM commodity channel, Plug discloses that it relies on certain key suppliers for critical components and that numerous other components are single-sourced or otherwise subject to limited supplier availability — some requiring qualification, certification or long lead times. For a hardware manufacturer scaling fuel cells, electrolyzers and hydrogen equipment, single-sourcing is a genuine supply-shock vector: a supplier capacity constraint, quality issue or financial distress could halt manufacturing or raise costs. Suppliers are unnamed, so this registers as a structural sole-source risk rather than a named edge.

“We rely on certain key suppliers for critical components in our products, and there are numerous other components for our products that are single sourced or otherwise subject to limited supplier availability.”