Solaris Energy Infrastructure, Inc.

Factors that could materially adversely affect our business, financial condition, operating results or liquidity and the trading price of our Class A common stock are described under Part I, Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the SEC on March 5, 2025. As of the date of this filing, there have been no material updates to the risk factors previously disclosed in Part I, Item 1A. “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2024 except as described herein.

Tariffs and other trade measures could adversely affect our results of operations, financial position and cash flows.

The U.S. government has announced baseline tariffs of 10% on products from virtually all foreign countries and an additional individualized reciprocal tariff on the countries with which the United States has the largest trade deficits. Additionally, tariffs have been placed on the importation of certain materials. As a result of the administration's trade policies, tariffs have increased and may increase our material input costs. Any further trade restrictions, retaliatory trade measures and additional tariffs could result in higher input costs to our products, increased costs and delays in meeting our customers’ orders. It remains unclear to what extent, upon which countries, and upon which terms, tariffs may be levied. There remains much uncertainty regarding the full scope of tariffs, if they will be increased, decreased or eliminated altogether and, to the extent that such trade policies impact our supply chain, we may not be able to fully mitigate the impact of these increased costs or pass price increases on to our customers.

The imposition of further tariffs by the United States on a broader range of imports, or further retaliatory trade measures taken in response to additional tariffs or uncertainty regarding such potential impacts, could increase costs in our supply chain or reduce demand of our customers’ products, either of which could adversely affect our results of operations. Additionally, changes in trade policy may have negative impacts on the global economic environment (including causing or exacerbating any potential recession) which could have a negative impact on the demand for our power generation solutions as our customers delay or cancel projects in which our business may service.

The ultimate impact of these trade measures on our business operations and financial results is uncertain and may be affected by various factors, including whether and when such trade measures are implemented, the timing when such measures may become effective, the amount, scope, or nature of such trade measures, the direct or indirect impacts that trade measures may have on consumer or business sentiment and the broader economy and our ability to execute strategies to mitigate any negative impacts.

We are subject to a number of risks associated with Stateline.

On April 28, 2025, weannounced the formation of Stateline, an entity involving our newly formed, wholly owned subsidiary Solaris Power Solutions and CTC, an affiliate of an industry leader in the evolving AI computer space. CTC subsequently assigned its interest in Stateline to MZX, an affiliate of CTC. Stateline is expected to account for approximately 900 MW (or approximately 53% of our Solaris Power Solutions’ generation assets), and as such, Stateline subjects our overall business to a number of risks, including:

To the extent one or more of these risks materializes, our Solaris Power Solutions segment and, in turn, our consolidated business and results of operations could be adversely affected.

We may be subject to short selling strategies and are party to various proceedings and claims related thereto from time to time.

Short selling is the practice of selling securities that the seller does not own but rather has borrowed from a third party with the intention of buying identical securities back at a later date to return to the lender. The short seller hopes to profit from a decline in the value of the securities between the sale of the borrowed securities and the purchase of the replacement shares, as the short seller expects to pay less in that purchase than it received in the sale. We are, and may in the future may be, the subject of unfavorable allegations made by short sellers. For example, earlier this year, Morpheus Research issued a report to short sellers that contained certain allegations against us that we believe to be misleading (as discussed further below). Any such allegations may be followed by periods of instability in the market price of our shares of common stock and negative publicity.

Any related inquiry or formal investigation from a governmental organization or other regulatory body, or resulting litigation from private claimants, could result in a material diversion of our management’s time and could have a material adverse effect on our business and results of operations. Such a situation could be costly and time-consuming and could distract our management from operating our business. For example, on March 28, 2025, a purported Solaris stockholder filed a complaint in a putative class action lawsuit styled*Stephen Pirello v. Solaris Energy Infrastructure, Inc., et al.,*Case No. 4:25-cv-01455, in the United States District Court for the Southern District of Texas. The complaint asserts claims against Solaris and certain of its officers under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, alleging among other things that they made misleading statements and omissions relating to Solaris’s acquisition of Mobile Energy Rentals LLC. The complaint further alleges that these allegedly misleading statements and omissions were revealed in the Morpheus Research report regarding Solaris issued on March 17, 2025, which the complaint alleges caused a decline in Solaris’s stock price. The outcome of the lawsuit is uncertain, particularly because it is at its initial stages. However, the Company believes the lawsuit is without merit and intends to vigorously defend against it.

We may be unable to raise the funds necessary to repurchase the Convertible Senior Notes for cash following a fundamental change or to pay any cash amounts due upon maturity or conversion of the Convertible Senior Notes, and our other indebtedness limits our ability to repurchase the Convertible Senior Notes or to pay any cash amounts due upon their maturity or conversion.

Noteholders may, subject to a limited exception, require us to repurchase their Convertible Senior Notes following a fundamental change at a cash repurchase price generally equal to the principal amount of the Convertible Senior Notes to be repurchased, plus accrued and unpaid interest, if any. Upon maturity of the Convertible Senior Notes, we must pay

their principal amount and accrued and unpaid interest in cash, unless they have been previously repurchased, redeemed or converted. In addition, upon conversion, we will satisfy part or all of our conversion obligation in cash unless we elect to settle conversions solely in shares of our Class A common stock. We may not have enough available cash or be able to obtain financing at the time we are required to repurchase the Convertible Senior Notes or pay any cash amounts due upon their maturity or conversion. In addition, applicable law, regulatory authorities and the agreements governing our other indebtedness may restrict our ability to repurchase the Convertible Senior Notes or pay any cash amounts due upon their maturity or conversion. For example, we expect to fund payments due on the Convertible Senior Notes from corresponding payments due to us under the subordinated intercompany convertible note to be issued by Solaris LLC to us. Each of our Term Loan Agreement and revolving credit facility will prohibit Solaris LLC from making payments to us under the subordinated intercompany convertible note except to provide for regularly scheduled interest payments, provided no events of default exists under the Term Loan Agreement or revolving credit facility, as applicable, or would result therefrom, and except for certain other payments in equity interests. Accordingly, we may not have access to funds from Solaris LLC to repurchase the Convertible Senior Notes for cash following a fundamental change or to pay any cash amounts due upon conversion of the Convertible Senior Notes. We may seek to obtain a waiver under the Term Loan Agreement and revolving credit facility to permit these payments, but we cannot assure you that we will be able to obtain such a waiver. Unless we exercise our option to settle conversions solely in shares, our failure to repurchase the Convertible Senior Notes or to pay the cash amounts due upon their maturity or conversion when required will constitute a default under the indenture governing the Convertible Senior Notes (the “Indenture”). A default under the Indenture or the fundamental change itself could also lead to a default under agreements governing our other indebtedness, which may result in that other indebtedness becoming immediately payable in full. We may not have sufficient funds to satisfy all amounts due under the other indebtedness and the Convertible Senior Notes.

The issuance of shares of our Class A common stock upon conversion of the Convertible Senior Notes will dilute the ownership interests of our stockholders and could depress the trading price of our Class A common stock.

Upon conversion of the Convertible Senior Notes offered in the Notes Offering, we will satisfy part or all of our conversion obligations in shares of our Class A common stock, unless we elect to settle conversions solely in cash. The issuance of shares of our Class A common stock upon conversion of the Convertible Senior Notes will dilute the ownership interests of our stockholders, which could depress the trading price of our Class A common stock. In addition, the market’s expectation that conversions may occur could depress the trading price of our Class A common stock even in the absence of actual conversions. Moreover, the expectation of conversions could encourage the short selling of our Class A common stock, which could place further downward pressure on the trading price of our Class A common stock.

Provisions in the indenture governing the Convertible Senior Notes could delay or prevent an otherwise beneficial takeover of us.

Certain provisions in the Convertible Senior Notes and the Indenture could make a third party attempt to acquire us more difficult or expensive. For example, if a takeover constitutes a “fundamental change” (as defined in the Indenture), then investors of the Convertible Senior Notes will have the right to require us to repurchase their Convertible Senior Notes for cash. In addition, if a takeover constitutes a “Make-Whole Fundamental Change” (as defined in the Indenture), then we may be required to temporarily increase the conversion rate for the Convertible Senior Notes. In either case, and in other cases, our obligations under the Convertible Senior Notes and the Indenture could increase the cost of acquiring us or otherwise discourage a third party from acquiring us or removing incumbent management, including in a transaction that holders of our Class A common stock may view as favorable.

The conditional conversion feature of the Convertible Senior Notes, if triggered, may adversely affect our financial condition and operating results.

In the event the conditional conversion feature of the Convertible Senior Notes is triggered, holders of such notes will be entitled to convert the Convertible Senior Notes at any time during specified periods at their option. If one or more holders elect to convert their Convertible Senior Notes, we may elect to settle all or a portion of our conversion obligation through the payment of cash, which could adversely affect our liquidity. In addition, even if holders do not elect to convert their Convertible Senior Notes, we could be required under applicable accounting rules to reclassify all

or a portion of the outstanding principal of the Convertible Senior Notes as a current rather than long-term liability, which would result in a material reduction of our net working capital.

The accounting method for the Convertible Senior Notes could adversely affect our reported financial condition and results.

The accounting method for reflecting the Convertible Senior Notes on our balance sheet, accruing interest expense for the Convertible Senior Notes and reflecting the underlying shares of our Class A common stock in our reported diluted earnings per share may adversely affect our reported earnings and financial condition.

In accordance with applicable accounting standards, we expect that the Convertible Senior Notes will be reflected as a liability on our balance sheets, with the initial carrying amount equal to the principal amount of the Convertible Senior Notes, net of issuance costs. The issuance costs will be treated as a debt discount for accounting purposes, which will be amortized into interest expense over the term of the Convertible Senior Notes. As a result of this amortization, the interest expense that we expect to recognize for the Convertible Senior Notes for accounting purposes will be greater than the cash interest payments we will pay on the Convertible Senior Notes, which will result in lower reported income.

In addition, we expect that the shares of Class A common stock underlying the Convertible Senior Notes will be reflected in our diluted earnings per share using the “if converted” method. Under that method, diluted earnings per share would generally be calculated assuming that all the Convertible Senior Notes were converted solely into shares of our Class A common stock at the beginning of the reporting period, unless the result would be anti-dilutive. The application of the if-converted method may reduce our reported diluted earnings per share, and accounting standards may change in the future in a manner that may adversely affect our diluted earnings per share.

Furthermore, if any of the conditions to the convertibility of the Convertible Senior Notes is satisfied, then we may be required under applicable accounting standards to reclassify the liability carrying value of the Convertible Senior Notes as a current, rather than a long-term, liability. This reclassification could be required even if no noteholders convert their Convertible Senior Notes and could materially reduce our reported working capital.