Soluna Finishes Kati 1 and Secures Conditional Base Load Position for All 166 MW in ERCOT

Soluna boosts operating capacity to about 206 MW and secures a conditional Base Load position for its full 166 MW Kati campus in ERCOT.

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Final 14 MW energized on time, lifting company-wide operating capacity to 206 MW

ALBANY, N.Y.--(BUSINESS WIRE)-- Soluna Holdings, Inc. ("Soluna" or the "Company") (NASDAQ: SLNH), a developer of green data centers for intensive computing applications, including AI and Bitcoin mining, today announced two milestones at its Project Kati campus in Willacy County, Texas. The Company has energized the final 14 MW at Project Kati 1, completing the 83 MW site, and has been notified that ERCOT has conditionally classified the full 166 MW Kati campus, including the planned Kati 2 AI expansion, as Base Load in its Batch Zero interconnection process.

Soluna Finishes Project Kati 1 and Secures Conditional Base Load Position for All 166 MW in ERCOT

With Project Kati 1 complete, Soluna's total operating capacity increases to approximately 206 MW, delivering on the timeline the Company outlined on its second-quarter earnings call. Every phase of Project Kati 1 was delivered on time with infrastructure costs on budget.

Batch Zero is ERCOT's transitional process for evaluating large load interconnection requests on a system-wide basis, replacing the prior project-by-project approach. A Base Load classification means a project's interconnection capacity is preserved on the basis of prior study work, and that the project is not subject to further reliability evaluation or megawatt allocation within the Batch Zero study. According to ERCOT, more than 438,000 MW of large load interconnection requests had entered the queue as of mid-2026, with nearly 90 percent coming from data centers.

The classification is conditional pending completion of ERCOT's ongoing verification process, under which ERCOT may remove a project from Batch Zero if the applicant does not respond to its information requests. Soluna is participating in the verification process and expects the full 166 MW to be confirmed as Base Load.

"This is proof that the Soluna model works," said John Belizaire, CEO of Soluna. "We build where the power already is and we bring generation with us, and ERCOT's framework recognizes exactly that. Kati 1 is finished and energized today, and our full 166 megawatts is positioned as Base Load while much of the market is still waiting to learn what it will be allocated."

Project Kati is a 166 MW wind-powered campus in Willacy County, Texas, powered by the Las Majadas wind energy project and built in two phases. Kati 1, the 83 MW first phase, is dedicated to Bitcoin hosting. Kati 2 will add 83 MW for AI and high-performance computing. Built behind the meter, the campus converts stranded renewable energy into productive computing capacity while bypassing the transmission upgrades and interconnection queues that constrain grid-connected development.

Energization of Kati 1 began in February 2026 following ERCOT approval and proceeded in phases. Kati 1A completed its 48 MW on April 1, filled by Galaxy Digital, with the remaining 35 MW energized in phases through the summer. The co-mining agreement with Bitdeer (NASDAQ: BTDR) announced in August is now underway, with equipment being delivered and deployed.

Soluna continues to advance a development pipeline of approximately 6.3 GW, including more than 650 MW of AI and high-performance computing capacity in development at Kati 2 and Project Dorothy 3.

For more information, visit www.solunacomputing.com.

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements include all statements, other than statements of historical fact, regarding our current views and assumptions with respect to future events regarding our business, including the anticipated timing and completion of the deployment described in this release, the expected hash rate and capacity contribution of that deployment, the final classification of the Project Kati campus in ERCOT's Batch Zero process, the development of Project Kati 2, and the Company's development pipeline. These forward-looking statements can be identified by terminology such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates," "confident," and similar statements. Soluna may also make written or oral forward-looking statements in its periodic reports to the U.S. Securities and Exchange Commission ("SEC"), in its annual report to shareholders, in press releases and other written materials, and in oral statements made by its officers, directors, or employees to third parties. Statements that are not historical facts, including but not limited to statements about Soluna's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties, further information regarding which is included in the Company's filings with the SEC. All information provided in this press release is as of the date of the press release, and Soluna undertakes no duty to update such information, except as required under applicable law.

About Soluna Holdings, Inc. (Nasdaq: SLNH)

Soluna is on a mission to make renewable energy a global superpower, using computing as a catalyst. The Company designs, develops, and operates digital infrastructure that transforms surplus renewable energy into global computing resources. Soluna’s pioneering data centers are strategically co-located with wind, solar, or hydroelectric power plants to support high-performance computing applications, including Bitcoin Mining, Generative AI, and other compute-intensive applications. Soluna’s proprietary software MaestroOS™ helps energize a greener grid while delivering cost-effective and sustainable computing solutions and superior returns. To learn more, visit solunacomputing.com and follow us on:

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Soluna regularly posts important information on its website and encourages investors and potential investors to consult the Soluna investor relations and investor resources sections of its website regularly.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260908967115/en/

Public Relations
West of Fairfax for Soluna
Soluna@westof.co

Source: Soluna Holdings, Inc.

Key Terms

base load technical

The minimum, continuous level of electricity demand that a power system needs to meet at all times, regardless of daily ups and downs. Think of it like the background hum of demand that never goes away — power plants or contracts that supply that steady demand typically run continuously and provide predictable output, which affects utility revenues, capacity planning, pricing and how investors value generation assets and long-term contracts.

behind the meter technical

Energy generation or equipment located on a customer’s side of the utility meter, such as rooftop solar panels, battery storage, electric vehicle chargers or energy-saving controls. It matters to investors because it reduces the amount of electricity bought from utilities, can lower operating costs for businesses, change utility revenue patterns, and shift demand in energy markets—like a homeowner installing a rain barrel that cuts water bought from the city and alters suppliers’ sales.

interconnection queue technical

A list kept by a power grid operator of requests from developers or customers who want to connect a new electricity source or large load to the transmission or distribution network; each project must wait its turn for technical studies, capacity allocation and approvals. For investors it signals how long projects may be delayed, how crowded a region is for new power capacity, and where extra costs or changes in timing might threaten returns — like being in line at an airport gate where your place in line determines when you can actually start operating.

high-performance computing technical

A cluster of very powerful computers, special chips and fast networks designed to tackle huge, complex calculations far faster than a normal PC — like replacing a single delivery van with a synchronized fleet to move a city’s worth of packages. For investors, high-performance computing matters because it enables faster product development, more accurate simulations and data analysis, and new revenue streams for hardware, software and services, making firms that supply or use it potentially more competitive and scalable.