PLUG POWER INC

In addition to the other information set forth in this Quarterly Report on Form 10-Q, you should carefully consider the risk factors that could materially affect the Company’s business, financial condition or future results discussed in the Company’s 2023 Form 10-K in Part I, Item 1A “Risk Factors” and the Company’s Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024 in Part II, Item 1A “Risk Factors”. The risks described in the 2023 Form 10-K and the Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024 are not the only risks that could affect the Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially adversely affect our business, financial condition and/or operating results in the future. As a supplement to the risk factors identified in the 2023 Form 10-K and the Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024, below we have set forth updated risk factors. Other than as provided below, there have been no material changes to the risk factors identified in the 2023 Form 10-K and the Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024.

The funding of the loan guarantee from the Department of Energy may be delayed, and we may not be able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the Department of Energy to receive the loan guarantee.

As previously announced, the Company received a conditional commitment for an up to $1.66 billion loan guarantee from the Department of Energy’s (“DOE”) Loan Programs Office to finance the development, construction, and ownership of up to six green hydrogen production facilities. Our ability to benefit from this loan guarantee is subject to

certain technical, legal, environmental and financial conditions, including negotiation of definitive financing documents, to be satisfied before funding of the loan guarantee. Whether and when our DOE loan guarantee will be funded is subject to a number of factors outside of our control, including political administration changes, legislative enactments, administrative actions. The funding of such loan guarantee may take longer than we expect, and if we are not able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the DOE to receive the loan guarantee, our business may be adversely affected.

We are subject to legal proceedings and legal compliance risks that could harm our business.

We are currently, and in the future may continue to be, subject to legal proceedings and similar disputes. In connection with any disputes or litigation in which we are involved, we may incur costs and expenses in connection with defending ourselves or in connection with the payment of any settlement or judgment or compliance with any ruling in connection therewith. It is often challenging to predict the outcome of legal proceedings and similar disputes with certainty. Determining reserves for any litigation is a complex and fact-intensive process that requires significant judgment calls. There can be no assurance that our expectations will prove correct, and even if these matters are resolved in our favor or without significant cash settlements, these matters, and the time and resources necessary to litigate or resolve them, including diversion of management resources, could have a material adverse effect on our business, results of operations, financial condition and cash flows.