8-K: Soluna Completes Dorothy 2 Phase 3, Expands AI & Board

Soluna Holdings, Inc. announced its October 2025 operational updates, including the completion of Project Dorothy 2 Phase 3, initiation of Project Kati-2 AI development, and a new board appointment.

Summary

• Project Dorothy 2 Phase 3 construction was substantially completed, with full construction on track for mid-November.
• Project Kati-2 AI development has begun, including an MOU with a development partner for HPC, with design and engineering expected to commence in Q4.
• Agnes Budzyn was appointed to Soluna's Board of Directors, bringing expertise in finance, digital assets, and technology.
• A 3.3 MW hosting partnership with KULR Technology Group at Project Sophie was announced.
• Deployment of 48 MW across three new and expanding partnership agreements at Project Dorothy 2 is completing.
• Deployment of 7 MW across two new partnership agreements at Project Sophie is completing.
• Substation upgrades for the full 83 MW at both Project Kati 1 and Project Kati 2 have been completed.
• Land acquisition of 50 acres for a data center project adjacent to Project Kati 1 was completed.
• Finalizing Power Purchase Agreements (PPAs) and Retail Electric Provider (REP) agreements for Ellen and Hedy projects, with work continuing for Annie, Gladys, Rosa, and Fei.

Sentiment

Score: 8

Explanation: The filing details significant progress on multiple key projects, including construction completion, new customer deployments, strategic partnerships for AI development, and infrastructure upgrades. The expansion into AI/HPC hosting is a positive strategic move. No explicit negatives or delays were reported.

Positives

• Substantial completion of Project Dorothy 2 Phase 3 construction, on track for full completion by mid-November.
• Initiation of Project Kati-2 AI development with an MOU for HPC partnership and Q4 design/engineering, signaling strategic expansion into AI/HPC hosting.
• Appointment of Agnes Budzyn to the Board of Directors, strengthening board expertise in finance, digital assets, and technology.
• Successful deployment of one new 3.3 MW customer at Project Sophie, with another 3.3 MW customer expected early November.
• Completion of substation upgrades for the full 83 MW at both Project Kati 1 and Project Kati 2, advancing infrastructure development.
• Completion of land acquisition for a 50-acre data center project adjacent to Project Kati 1, securing future expansion capacity.
• Ongoing finalization of PPAs and REPs for multiple pipeline projects (Ellen, Hedy, Annie, Gladys, Rosa, Fei), indicating future growth potential.
• Project Dorothy 1A continues to operate at a high level with cooler temperatures resulting in low curtailments and extended uptime.
• Investment in fleet upgrades at Project Dorothy 1B, with 900 S19 XP miners expected for deployment in November to improve overall hashrate.

Risks

• Actual results may differ materially from forward-looking statements due to various factors disclosed in SEC filings, including the Risk Factors section of the Annual Report on Form 10-K filed on March 31, 2025.

Future Outlook

Soluna expects to complete construction of Project Dorothy 2 by mid-November, deploy 20 MW of Canaan Avalon A15 XP miners at Project Dorothy 1A in January, and begin design and engineering for Project Kati-2 AI site in Q4. The company is also finalizing Power Purchase Agreements for several pipeline projects, indicating continued expansion and development.

Management Comments

• 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.

Industry Context

Soluna is actively expanding its green data center footprint, aligning with the growing demand for sustainable computing solutions for both Bitcoin mining and high-performance computing (HPC) applications like AI. The company's focus on co-locating with renewable energy sources and developing solutions for grid stability with high-density AI loads positions it within the broader trend of energy-efficient and environmentally conscious data center development. The expansion into AI/HPC hosting with Project Kati-2 and Project Grace reflects a strategic diversification beyond pure Bitcoin mining, tapping into a rapidly expanding market.

Comparison to Industry Standards

• The company's strategy of co-locating data centers with wind, solar, or hydroelectric power plants is a leading practice in the green data center industry, aiming to reduce carbon footprint and operational costs compared to traditional data centers reliant on fossil fuels.
• The development of Project Grace's microgrid electrical design for AI load integration and the MOU with a technology partner to address power demand fluctuations for high-density AI loads demonstrate an innovative approach to a critical challenge faced by the AI data center industry, where stable and efficient power delivery is paramount.
• The expansion into AI/HPC hosting with projects like Kati-2 and Grace positions Soluna to compete with specialized AI data center providers and cloud service providers offering GPU-as-a-service, by leveraging its renewable energy infrastructure advantage.

Management Changes

Corporate Governance

Stakeholder Impact

• Shareholders: Positive impact due to significant project progress, expansion into AI/HPC, new partnerships, and strengthened corporate governance with a new board member.
• Customers: Benefits from expanded hosting capacity, upgraded infrastructure, and new AI/HPC solutions.
• Employees: Increased hiring efforts for Project Dorothy 2 operations.
• Suppliers/Partners: Continued engagement through new partnerships (KULR Technology Group, HPC development partner, technology partner for Project Grace) and ongoing equipment deployments.

Next Steps

• Full deployment and transition to operations for Project Dorothy 2 by mid-November.
• Hiring efforts for Project Dorothy 2 operations.
• Deployment of a second new 3.3 MW customer at Project Sophie expected early November.
• Deployment of 900 S19 XP miners at Project Dorothy 1B expected at the start of November.
• Coordination efforts for 20 MW Canaan deployment at Project Dorothy 1A in January.
• Design and engineering for Project Kati-2 AI site expected to begin in Q4.
• Site marketing and customer development for Project Kati-2.
• Installation of Phase K1A 48 MW Galaxy at Project Kati 1 continues.
• Finalizing PPA and REP agreements for Ellen and Hedy projects.
• Continuing work on PPA agreements for Annie, Gladys, Rosa, and Fei projects.
• Kicking off the Project Kati 35 MW Hosting RFP process.

Key Dates

Recommendation

The company demonstrates strong operational execution with multiple project completions and advancements, particularly the substantial completion of Project Dorothy 2 Phase 3 and the initiation of Project Kati-2 AI development. Strategic expansion into the high-growth AI/HPC hosting market, coupled with new partnerships and infrastructure upgrades, positions Soluna for future revenue growth and diversification. The appointment of a new board member with relevant expertise further strengthens corporate governance. These developments suggest a positive trajectory for the company, making it an attractive investment.

Keywords

Soluna Holdings, SLNH, Green Data Centers, Bitcoin Mining, AI Hosting, Renewable Energy, High-Performance Computing, Project Dorothy, Project Kati, Project Sophie, Corporate Governance, Board Appointment, Data Center Development, Infrastructure, SEC Filing, 8-K