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REGISTERED NUMBER: 15365993 (England and Wales)

REPORT OF THE DIRECTORS AND

FINANCIAL STATEMENTS FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

FOR

PLUG POWER UK LIMITED

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

CONTENTS OF THE FINANCIAL STATEMENTS

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

Page |

| Company information | 1 |

| Report of the directors | 2 |

| Report of the independent auditors | 4 |

| Statement of comprehensive income | 7 |

| Balance sheet | 8 |

| Statement of changes in equity | 9 |

| Notes to the financial statements | 10 |

| PLUG POWER UK LIMITED |

COMPANY INFORMATION

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

| Directors: | Mr B T P Haycraft

| Mr S Shrestha

| Mr J Van Erven

| Registered office: | Suite 1, 7th Floor

| 50 Broadway

| London

| SW1H 0DB

| Registered number: | 15365993 (England and Wales)

| Auditors: | Azets Audit Services

| One Temple Quay

| Temple Back East

| Bristol

| BS1 6DZ

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

REPORT OF THE DIRECTORS

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

The directors present their report with the financial statements of the company for the period 21 December 2023 to 31 December 2024.

Incorporation

The company was incorporated on 21 December 2023 .

Principal activity

The principal activity of the company in the period under review was that of manufacture of industrial gases.

Review of business

During the period, the company reported a profit of £48,185 for the period ended 31 December 2024.

Dividends

No dividends will be distributed for the period ended 31 December 2024.

Post balance sheet events

The directors have evaluated the subsequent events from the date of the financial statements through to the date the financial statements were available to be issued.

In March 2025, the Group announced a broader restructuring initiative aimed at reducing annual expenses by $200 million, which impacted Plug Power UK Limited. Further details are disclosed in Note 11.

Directors

The directors who have held office during the period from 21 December 2023 to the date of this report are as follows:

Mr B T P Haycraft - appointed 21 December 2023

Mr S Shrestha - appointed 21 December 2023

Mr J Van Erven - appointed 21 December 2023

Statement of directors' responsibilities

The directors are responsible for preparing the Report of the directors and the financial statements in accordance with applicable law and regulations.

Company law requires the directors to prepare financial statements for each financial year. Under that law the directors have elected to prepare the financial statements in accordance with United Kingdom Generally Accepted Accounting Practice (United Kingdom Accounting Standards and applicable law), including Financial Reporting Standard 101 'Reduced Disclosure Framework'. Under company law the directors must not approve the financial statements unless they are satisfied that they give a true and fair view of the state of affairs of the company and of the profit or loss of the company for that period. In preparing these financial statements, the directors are required to:

- | select suitable accounting policies and then apply them consistently;

- | make judgements and accounting estimates that are reasonable and prudent;

- | prepare the financial statements on the going concern basis unless it is inappropriate to presume that the company will continue in business.

The directors are responsible for keeping adequate accounting records that are sufficient to show and explain the company's transactions and disclose with reasonable accuracy at any time the financial position of the company and enable them to ensure that the financial statements comply with the Companies Act 2006. They are also responsible for safeguarding the assets of the company and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities.

Statement as to disclosure of information to auditors

So far as the directors are aware, there is no relevant audit information (as defined by Section 418 of the Companies Act 2006) of which the company's auditors are unaware, and each director has taken all the steps that he ought to have taken as a director in order to make himself aware of any relevant audit information and to establish that the company's auditors are aware of that information.

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

REPORT OF THE DIRECTORS

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

Auditors

The auditors, Azets Audit Services, will be proposed for re-appointment at the forthcoming Annual General Meeting.

On behalf of the board:

Mr J Van Erven - Director

18 September 2025

REPORT OF THE INDEPENDENT AUDITORS TO THE MEMBERS OF

PLUG POWER UK LIMITED

Opinion

We have audited the financial statements of Plug Power UK Limited (the 'company') for the period ended 31 December 2024 which comprise the statement of comprehensive income, the balance sheet, the statement of changes in equity and notes to the financial statements, including significant accounting policies. The financial reporting framework that has been applied in their preparation is applicable law and United Kingdom Accounting Standards, including Financial Reporting Standard 101 Reduced Disclosure Framework (United Kingdom Generally Accepted Accounting Practice).

In our opinion the financial statements:

- |  | give a true and fair view of the state of the company's affairs as at 31 December 2024 and of its profit for the period then ended; |

- |  | have been properly prepared in accordance with United Kingdom Generally Accepted Accounting Practice; and |

- |  | have been prepared in accordance with the requirements of the Companies Act 2006. |

Basis for opinion

We conducted our audit in accordance with International Standards on Auditing (UK) (ISAs (UK)) and applicable law. Our responsibilities under those standards are further described in the Auditor's responsibilities for the audit of the financial statements section of our report. We are independent of the company in accordance with the ethical requirements that are relevant to our audit of the financial statements in the UK, including the FRC's Ethical Standard, and we have fulfilled our other ethical responsibilities in accordance with these requirements. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.

Conclusions relating to going concern

In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate.

Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.

Our responsibilities and the responsibilities of the directors with respect to going concern are described in the relevant sections of this report.

Other information

The other information comprises the information included in the annual report other than the financial statements and our auditor's report thereon. The directors are responsible for the other information contained within the annual report. Our opinion on the financial statements does not cover the other information and, except to the extent otherwise explicitly stated in our report, we do not express any form of assurance conclusion thereon. Our responsibility is to read the other information and, in doing so, consider whether the other information is materially inconsistent with the financial statements or our knowledge obtained in the course of the audit, or otherwise appears to be materially misstated. If we identify such material inconsistencies or apparent material misstatements, we are required to determine whether this gives rise to a material misstatement in the financial statements themselves. If, based on the work we have performed, we conclude that there is a material misstatement of this other information, we are required to report that fact.

We have nothing to report in this regard.

Opinions on other matters prescribed by the Companies Act 2006

In our opinion, based on the work undertaken in the course of our audit:

- |  | the information given in the directors' report for the financial period for which the financial statements are prepared is consistent with the financial statements; and |

- |  | the directors' report has been prepared in accordance with applicable legal requirements. |

Matters on which we are required to report by exception

In the light of the knowledge and understanding of the company and its environment obtained in the course of the audit, we have not identified material misstatements in the directors' report.

We have nothing to report in respect of the following matters in relation to which the Companies Act 2006 requires us to report to you if, in our opinion:

- |  | adequate accounting records have not been kept, or returns adequate for our audit have not been received from branches not visited by us; or |

- |  | the financial statements are not in agreement with the accounting records and returns; or |

- |  | certain disclosures of directors' remuneration specified by law are not made; or |

- |  | we have not received all the information and explanations we require for our audit; or |

- |  | the directors were not entitled to take advantage of the small companies exemption from the requirement to prepare a strategic report. |

REPORT OF THE INDEPENDENT AUDITORS TO THE MEMBERS OF

PLUG POWER UK LIMITED

Responsibilities of directors

As explained more fully in the directors' responsibilities statement, the directors are responsible for the preparation of the financial statements and for being satisfied that they give a true and fair view, and for such internal control as the directors determine is necessary to enable the preparation of financial statements that are free from material misstatement, whether due to fraud or error. In preparing the financial statements, the directors are responsible for assessing the company's ability to continue as a going concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless the directors either intend to liquidate the company or to cease operations, or have no realistic alternative but to do so.

Auditor's responsibilities for the audit of the financial statements

Our objectives are to obtain reasonable assurance about whether the financial statements as a whole are free from material misstatement, whether due to fraud or error, and to issue an auditor's report that includes our opinion. Reasonable assurance is a high level of assurance but is not a guarantee that an audit conducted in accordance with ISAs (UK) will always detect a material misstatement when it exists. Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of these financial statements.

A further description of our responsibilities is available on the Financial Reporting Council's website at: https://www.frc.org.uk/auditorsresponsibilities. This description forms part of our auditor's report.

Extent to which the audit was considered capable of detecting irregularities, including fraud

Irregularities, including fraud, are instances of non-compliance with laws and regulations. We design procedures in line with our responsibilities, outlined above and on the Financial Reporting Council's website, to detect material misstatements in respect of irregularities, including fraud.

We obtain and update our understanding of the entity, its activities, its control environment, and likely future developments, including in relation to the legal and regulatory framework applicable and how the entity is complying with that framework. Based on this understanding, we identify and assess the risks of material misstatement of the financial statements, whether due to fraud or error, design and perform audit procedures responsive to those risks, and obtain audit evidence that is sufficient and appropriate to provide a basis for our opinion. This includes consideration of the risk of acts by the entity that were contrary to applicable laws and regulations, including fraud.

In response to the risk of irregularities and non-compliance with laws and regulations, including fraud, we designed procedures which included:

- |  | Enquiry of management and those charged with governance around actual and potential litigation and claims as well as actual, suspected and alleged fraud; |

- |  | Reviewing minutes of meetings of those charged with governance; |

- |  | Assessing the extent of compliance with the laws and regulations considered to have a direct material effect on the financial statements or the operations of the company through enquiry and inspection; |

- |  | Reviewing financial statement disclosures and testing to supporting documentation to assess compliance with applicable laws and regulations; |

- |  | Performing audit work over the risk of management bias and override of controls, including testing of journal entries and other adjustments for appropriateness, evaluating the business rationale of significant transactions outside the normal course of business and reviewing accounting estimates for indicators of potential bias. |

Because of the inherent limitations of an audit, there is a risk that we will not detect all irregularities, including those leading to a material misstatement in the financial statements or non-compliance with regulation. This risk increases the more that compliance with a law or regulation is removed from the events and transactions reflected in the financial statements, as we will be less likely to become aware of instances of non-compliance. The risk of not detecting a material misstatement resulting from fraud is higher than for one resulting from error, as fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the override of internal control.

REPORT OF THE INDEPENDENT AUDITORS TO THE MEMBERS OF

PLUG POWER UK LIMITED

Use of our report

This report is made solely to the company's members, as a body, in accordance with Chapter 3 of Part 16 of the Companies Act 2006. Our audit work has been undertaken so that we might state to the company's members those matters we are required to state to them in an auditor's report and for no other purpose. To the fullest extent permitted by law, we do not accept or assume responsibility to anyone other than the company and the company's members as a body, for our audit work, for this report, or for the opinions we have formed.

Duncan Stratford (Senior Statutory Auditor)

for and on behalf of Azets Audit Services

One Temple Quay

Temple Back East

Bristol

BS1 6DZ

19 September 2025

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

STATEMENT OF COMPREHENSIVE

INCOME

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

| Notes | £

| TURNOVER | 1,188,903 |  |

| Administrative expenses | (1,134,132 | ) |

| OPERATING PROFIT and |

| PROFIT BEFORE TAXATION | 4 | 54,771 |  |

| Tax on profit | 5 | (6,586 | ) |

| PROFIT FOR THE FINANCIAL PERIOD | 48,185 |  |

| OTHER COMPREHENSIVE INCOME | - |  |

| TOTAL COMPREHENSIVE INCOME FOR THE PERIOD | 48,185 |  |

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

BALANCE SHEET

31 DECEMBER 2024

| Notes | £

| CURRENT ASSETS

| Debtors | 6 | 77,145 |  |

| Cash at bank | 6,028 |  |

83,173 |  |

| CREDITORS

| Amounts falling due within one year | 7 | (34,987 | ) |

| NET CURRENT ASSETS | 48,186 |  |

| TOTAL ASSETS LESS CURRENT LIABILITIES | 48,186 |  |

| CAPITAL AND RESERVES

| Called up share capital | 8 | 1 |  |

| Retained earnings | 9 | 48,185 |  |

| SHAREHOLDERS' FUNDS | 48,186 |  |

The financial statements have been prepared in accordance with the provisions applicable to companies subject to the small companies regime.

The financial statements were approved by the Board of Directors and authorised for issue on 18 September 2025 and were signed on its behalf by:

Mr J Van Erven - Director

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

STATEMENT OF CHANGES IN EQUITY

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

Called up |  |

share | Retained | Total |

capital | earnings | equity |

| £ | £ | £

Changes in equity

Issue of share capital | 1 |  | - |  | 1 |  |

Total comprehensive income | - |  | 48,185 |  | 48,185 |  |

Balance at 31 December 2024 | 1 |  | 48,185 |  | 48,186 |  |

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

NOTES TO THE FINANCIAL STATEMENTS

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

1. | STATUTORY INFORMATION

| Plug Power UK Limited is a private company, limited by shares , registered in England and Wales. The company's registered number and registered office address can be found on the Company Information page.

| The company's functional and presentational currency is pounds sterling (GBP) and the financial statements have been rounded to the nearest pound (£).

2. | ACCOUNTING POLICIES

| Basis of preparation

| These financial statements have been prepared in accordance with Financial Reporting Standard 101 "Reduced Disclosure Framework" and the Companies Act 2006. The financial statements have been prepared under the historical cost convention.

| The company has taken advantage of the following disclosure exemptions in preparing these financial statements, as permitted by FRS 101 "Reduced Disclosure Framework":

| • | the requirements of paragraphs 62, B64(d), B64(e), B64(g), B64(h), B64(j) to B64(m), B64(n)(ii), B64(o)(ii), B64(p), B64(q)(ii), B66 and B67 of IFRS 3 Business Combinations;

| • | the requirements of IFRS 7 Financial Instruments: Disclosures;

| • | the requirements of paragraph 52 of IFRS 16 Leases;

| • | the requirements of the second sentence of paragraph 110 and paragraphs 113(a), 114, 115, 118, 119(a) to (c), 120 to 127 and 129 of IFRS 15 Revenue from Contracts with Customers;

| • | the requirements of paragraphs 10(d), 10(f), 16, 38A, 38B, 38C, 38D, 40A, 40B, 40C, 40D, 111 and 134 to 136 of IAS 1;

| • | the requirements of

| - | paragraphs 1 to 44E, 44H(b)(ii) and 45 to 63 of IAS 7 Statement of Cash Flows; and

| - | paragraphs 44F, 44G, 44H(a), 44H(b)(i), 44H(b)(iii) and 44H(c) of IAS 7;

| • | the requirements of paragraphs 30 and 31 of IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors;

| • | the requirements of paragraphs 88C and 88D of IAS 12 Income Taxes;

| • | the requirements of paragraph 74(b) of IAS 16;

| • | the requirements of paragraphs 17 and 18A of IAS 24 Related Party Disclosures;

| • | the requirements in IAS 24 Related Party Disclosures to disclose related party transactions entered into between two or more members of a group;

| • | the requirements of paragraphs 134(d) to 134(f) and 135(c) to 135(e) of IAS 36 Impairments of Assets.

| Turnover

| Turnover represents amounts charges to group companies under a sales service agreement. Turnover is recognised when chargeable costs are incurred.

| Financial instruments

| Financial instruments are recognised in the company's balance sheet when the company becomes party to the contractual provisions of the instrument.

| Financial assets and liabilities are offset, with the net amounts presented in the financial statements, when there is a legally enforceable right to set off the recognised amounts and there is an intention to settle on a net basis or to realise the asset and settle the liability simultaneously.

| Classification of financial liabilities

| Financial liabilities and equity instruments are classified according to the substance of the contractual arrangements entered into.

| Basic financial liabilities

| Basic financial liabilities, including creditors, and loans from fellow group companies are initially recognised at transaction price.

| Trade creditors are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Amounts payable are classified as current liabilities if payment is due within one year or less. If not, they are presented as non-current liabilities. Trade creditors are initially recognised at transaction price.

| Cash

| Cash is represented by cash in hand and deposits with financial institutions.

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

NOTES TO THE FINANCIAL STATEMENTS - continued

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

2. | ACCOUNTING POLICIES - continued

| Taxation

| The tax expense for the period comprises current and deferred tax. Tax is recognised in the income statement, except to the extent that it relates to items recognised in other comprehensive income or directly in equity in which case the tax is recognised in other comprehensive income or directly in equity, respectively.

| The current income tax charge is calculated on the basis of the tax laws enacted or substantively enacted at the balance sheet date.

| Transactions and calculations for which the ultimate tax determination is uncertain may arise during the ordinary course of business. Should an uncertain tax position arise, where a risk of an additional tax liability has been identified and it is considered probable that the Company will be required to settle that tax, a tax provision is recognised. This is assessed on a case-by case basis.

| Deferred tax is recognised in respect of all timing differences that have originated but not reversed at the balance sheet date.

| Foreign currencies

| Assets and liabilities in foreign currencies are translated into sterling at the rates of exchange ruling at the balance sheet date. Transactions in foreign currencies are translated into sterling at the rate of exchange ruling at the date of transaction. Exchange differences are taken into account in arriving at the operating result.

| Employee benefit costs

| The company operates a defined contribution pension scheme. Contributions payable to the company's pension scheme are charged to the income statement in the period to which they relate.

| Going concern

| The company is dependent on the continuing financial support of its parent company, Plug Power Inc. The directors have received confirmation that such support will continue for at least 12 months from the date of approval of these financial statements. On this basis, the directors consider it appropriate to prepare the financial statements on a going concern basis.

3. | EMPLOYEES AND DIRECTORS

| £

| Wages and salaries | 915,798 |  |

| Social security costs | 98,285 |  |

| Other pension costs | 39,466 |  |

1,053,549 |  |

| The average number of employees during the period was as follows:

| Employees | 15 |  |

| £

| Directors' remuneration | - |  |

4. | PROFIT BEFORE TAXATION

| The profit before taxation is stated after charging/(crediting):

| £

| Auditors' remuneration | 15,500 |  |

| Foreign exchange differences | (8,772 | ) |

| PLUG POWER UK LIMITED (REGISTERED NUMBER: 15365993) |

NOTES TO THE FINANCIAL STATEMENTS - continued

FOR THE PERIOD 21 DECEMBER 2023 TO 31 DECEMBER 2024

5. | TAXATION

| Analysis of tax expense

| £

| Current tax:

| Tax | 6,586 |  |

| Total tax expense in statement of comprehensive income | 6,586 |  |

6. | DEBTORS: AMOUNTS FALLING DUE WITHIN ONE YEAR |

| £

| Amounts owed by group undertakings | 75,310 |  |

| Other debtors | 1,835 |  |

77,145 |  |

7. | CREDITORS: AMOUNTS FALLING DUE WITHIN ONE YEAR |

| £

| Trade creditors | 5,401 |  |

| Tax | 6,586 |  |

| Accrued expenses | 23,000 |  |

34,987 |  |

8. | CALLED UP SHARE CAPITAL

| Allotted, issued and fully paid:

| Number: | Class: | Nominal |

value: |  | £

| 1 | Ordinary | £1 | 1 |  |

| 1 Ordinary share of £1 was allotted and fully paid for cash at par during the period.

9. | RESERVES

Retained |

earnings |

| £

| Profit for the period | 48,185 |  |

| At 31 December 2024 | 48,185 |  |

10. | ULTIMATE PARENT COMPANY

| The immediate and ultimate parent Company is Plug Power Inc., a Company registered in the United States of America at 125 Vista Boulevard Slingerlands, NY 12159.

| Copies of its consolidated financial statements, as well as certain regulatory filings, for example Quarterly Reports on Form 10-Q and the Annual Report on Form 10-K, that provide further information about the company and its business activities, can be obtained at https://www.ir.plugpower.com/financials/sec-filings/sec-filings-details/default.aspx?FilingId=18247389

11. | POST BALANCE SHEET EVENTS

| The directors have evaluated the subsequent events from the date of the financial statements through to the date the financial statements were available to be issued.

| In March 2025, the Group announced a broader restructuring initiative, aimed at reducing annual expenses by $150 million to $200 million. As part of this initiative, Plug Power UK will reduce its workforce by approximately 10%, through a combination of involuntary and natural attrition.