MPLX & MARA Announce Collaboration on Integrated Power Generation & Data Center Campuses in West Texas

This announcement was first published on MARA’s Investor Relations page. To view the original press release, visit ir.mara.com.

Findlay, OH, Nov. 04, 2025 (PRNewswire) – MPLX LP (NYSE: MPLX) and MARA Holdings, Inc. (NASDAQ: MARA) announce the signing of a letter of intent (LOI) for MPLX to facilitate supply of natural gas to planned integrated power generation facilities and state-of-the-art data center campuses in West Texas.

Under the initiative, MPLX will facilitate natural gas supply from its Delaware basin natural gas processing plants to MARA's planned gas-fired electricity generation facilities in West Texas, which will deliver reliable, scalable solutions for the region's energy and computing needs. MARA will build multiple power generation facilities and data centers at locations near MPLX processing facilities across the Delaware basin, with an initial capacity of 400 MW and the potential to scale up to 1.5 GW. These power generation facilities will be supplied natural gas by MPLX and provide electricity for MARA's planned data center campuses while also supplying power to MPLX's West Texas operations, enhancing reliability for MPLX and its producer-customers.

"This collaboration will create additional in-basin demand in the Delaware basin and enhance our natural gas value chain with improved power reliability, benefiting existing producer-customers," said Maryann Mannen, MPLX president and chief executive officer.

Fred Thiel, MARA's chairman and CEO added, "Collaborating with MPLX allows us to leverage lower-cost local natural gas resources and build the foundation for high-performance, efficient data center campuses. Our integrated approach provides MARA with the flexibility to optimize power usage, monetize excess generation, and support the region's transformation into a hub for digital infrastructure. As the project scales, we anticipate transitioning from dynamic mining loads to advanced AI/HPC workloads, maximizing value and optionality for all stakeholders."

Under the terms of the LOI, MARA will own and operate the power generating facilities and data centers, while MPLX will supply natural gas and receive electricity under a tolling agreement. The proposed transaction remains subject to the negotiation and execution of definitive and commercial agreements, receipt of any required regulatory and third-party approvals, completion of satisfactory due diligence by both parties and other conditions precedent.

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About MPLX LP

‍MPLX is a diversified, large-cap master limited partnership that owns and operates midstream energy infrastructure and logistics assets and provides fuels distribution services. MPLX's assets include a network of crude oil and refined product pipelines; an inland marine business; light-product terminals; storage caverns; refinery tanks, docks, loading racks, and associated piping; and crude and light-product marine terminals. The company also owns crude oil and natural gas gathering systems and pipelines as well as natural gas and NGL processing and fractionation facilities in key U.S. supply basins. More information is available at www.MPLX.com.

About MARA

‍MARA (NASDAQ: MARA) deploys digital energy technologies to advance the world's energy systems. Harnessing the power of compute, MARA transforms excess energy into digital capital, balancing the grid and accelerating the deployment of critical infrastructure. Building on its expertise to redefine the future of energy, MARA develops technologies that reduce the energy demands of high-performance computing applications, from AI to the edge. For more information, visit www.mara.com.

MPLX Investor Relations Contact: (419) 421-2071

‍Kristina Kazarian, Vice President Finance and Investor Relations
Brian Worthington, Senior Director, Investor Relations
Isaac Feeney, Director, Investor Relations
Evan Heminger, Analyst, Investor Relations

MPLX Media Contact: (419) 421-3577

‍Jamal Kheiry, Communications Manager

MARA Investor Relations Contact: (800) 804-1690

‍Robert Samuels, Vice President, Investor Relations
Stella Nguyen, Associate, Investor Relations

MARA Media Contact

mara-jf@joelefrank.com

MPLX Forward-Looking Statements

This press release contains forward-looking statements regarding MPLX. These forward-looking statements may relate to, among other things, MPLX's expectations, estimates and projections concerning its business and operations and financial and strategic priorities, including entering into an LOI with MARA as well MPLX's Delaware basin and West Texas operations. You can identify forward-looking statements by words such as "anticipate," "believe," "commitment," "could," "design," "endeavor," "estimate," "expect," "focus," "forecast," "goal," "guidance," "intend," "may," "objective," "opportunity," "outlook," "plan," "policy," "position," "potential," "predict," "priority," "progress," "project," "prospective," "pursue," "seek," "should," "strategy," "strive," "target," "trends," "will," "would" or other similar expressions that convey the uncertainty of future events or outcomes. MPLX cautions that these statements are based on management's current knowledge and expectations and are subject to certain risks and uncertainties, many of which are outside of the control of MPLX, that could cause actual results and events to differ materially from the statements made herein. Factors that could cause MPLX's actual results to differ materially from those implied in the forward-looking statements include but are not limited to: whether MPLX and MARA will enter into a definitive agreement or that the proposed transaction will be consummated as described, or at all; the timing and completion of construction of MARA's planned power generation facilities and data center campuses in West Texas at the anticipated capacity levels; the availability and reliability of natural gas supply from MPLX's Delaware basin processing plants; the ability to obtain necessary permits, approvals and financing for the planned projects; potential construction delays or cost overruns; the performance and scalability of MARA's planned power generation and digital infrastructure; the availability, cost and stability of energy markets; changes in market demand for data center capacity and high-performance computing; and the other factors set forth under the heading "Risk Factors" and "Disclosures Regarding Forward-Looking Statements" in MPLX's Annual Reports on Form 10-K for the year ended Dec. 31, 2024, and in other filings with the U.S. Securities and Exchange Commission ("SEC").

Any forward-looking statement speaks only as of the date of the applicable communication and we undertake no obligation to update any forward-looking statement except to the extent required by applicable law.

Copies of MPLX's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other SEC filings are available on the SEC's website, MPLX's website at http://ir.mplx.com or by contacting MPLX's Investor Relations office.

MARA Investor Notice

Investing in MARA securities involves a high degree of risk. Before making an investment decision, you should carefully consider the risks, uncertainties and forward-looking statements described under the heading "Risk Factors" in MARA's most recent Annual Report on Form 10-K and any other periodic reports that MARA may file with the SEC. If any of these risks were to occur, MARA's business, financial condition or results of operations would likely suffer. In that event, the value of MARA securities could decline, and you could lose part or all of your investment. The risks and uncertainties described herein and in MARA's SEC filings are not the only ones facing MARA. Additional risks not presently known to MARA or that MARA currently deems immaterial may also impair MARA's business operations. In addition, MARA's past financial performance may not be a reliable indicator of future performance, and historical trends should not be used to anticipate results in the future. See "MARA Forward-Looking Statements" below.

MARA Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the federal securities laws. All statements, other than statements of historical fact, included in this press release are forward-looking statements. The words "may," "will," "could," "anticipate," "expect," "intend," "believe," "continue," "target" and similar expressions or variations or negatives of these words are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Such forward-looking statements include, among other things, statements related to MARA's planned power generating facilities and data center campuses in West Texas; the anticipated supply of natural gas from MPLX; the expected capacity, scalability and performance of those facilities; the anticipated benefits of the proposed transaction to MARA, including enhanced power reliability and reduced downtime; the potential transition from dynamic mining loads to advanced AI/HPC workloads; and MARA's ability to advance and execute its digital energy infrastructure strategy. Such forward-looking statements are based on management's current expectations about future events as of the date hereof and involve many risks and uncertainties that could cause MARA's actual results to differ materially from those expressed or implied in these forward-looking statements. Subsequent events and developments, including actual results or changes in MARA's assumptions, may cause MARA's views to change. MARA does not undertake to update its forward-looking statements except to the extent required by applicable law. Readers are cautioned not to place undue reliance on such forward-looking statements. All forward-looking statements included herein are expressly qualified in their entirety by these cautionary statements. MARA's actual results and outcomes could differ materially from those included in these forward-looking statements as a result of various factors, including, but not limited to, whether MARA and MPLX will enter into definitive agreements or that the proposed transaction will be consummated as described, or at all; the timing and completion of construction of MARA's planned power generation facilities and data center campuses in West Texas at the anticipated capacity levels; the availability and reliability of natural gas supply from MPLX's Delaware basin processing plants; the ability to obtain necessary permits, approvals and financing for the planned projects; potential construction delays or cost overruns; the performance and scalability of MARA's planned power generation and digital infrastructure; the availability, cost and stability of energy markets; changes in market demand for data center capacity and high-performance computing; and the factors set forth under the heading "Risk Factors" in MARA's most recent Annual Report on Form 10-K, and any other periodic reports that MARA may file with the SEC.