8-K: Soluna Reports Q2 2025 Results, Boosts Green Data Center Growth

Soluna Holdings, Inc. announced its second quarter 2025 financial results, highlighting continued Adjusted EBITDA improvement, steady gross margins, and significant progress on new green data center projects.

Summary

• Net loss declined by $1.4 million from Q2 2024 to Q2 2025, reaching $(7.780) million.
• Adjusted EBITDA improved by $0.4 million (25.5%) from Q1 2025 to Q2 2025, reaching $(1.227) million, marking the fourth consecutive quarter of growth.
• Gross margin remained steady at 19% for operating sites.
• Revenue for Q2 2025 was $6.2 million, a $3.5 million decline year-over-year from Q2 2024.
• Quarter-end unrestricted cash increased by $2.0 million to $9.9 million since December 31, 2024.
• Secured land and $20 million in funding from Spring Lane Capital for Project Kati 1 (35 MW wind-powered data center), with construction expected to begin in Q3 2025 and initial energization targeted for early 2026.
• Project Dorothy 2 construction is on track for full energization in Q4 2025.
• Launched 295 MW of new projects in Q2 2025, including wind-powered Projects Hedy and Ellen, and solar-powered Project Annie.
• Increased power pipeline to 2.8 GW of long-term clean energy capacity.

Sentiment

Score: 6

Explanation: The company demonstrated strong operational progress with new project launches and continued sequential Adjusted EBITDA growth, indicating effective cost control and project execution. However, the significant year-over-year decline in revenue and Adjusted EBITDA, primarily due to the Bitcoin halving and Hashprice volatility, presents a challenging market environment. The successful capital raising and project funding are positive, but the overall financial performance is still impacted by external market conditions.

Positives

• Net loss declined by $1.4 million from Q2 2024 to Q2 2025.
• Adjusted EBITDA improved by $0.4 million (25.5%) from Q1 2025 to Q2 2025, reaching $(1.227) million, marking the fourth consecutive quarter of Adjusted EBITDA growth.
• Maintained a steady 19% gross margin despite market softness in Hashprice.
• Unrestricted cash reserves increased by $2.0 million to $9.9 million at quarter-end since December 31, 2024.
• Secured land and $20 million in funding from Spring Lane Capital for Project Kati 1 (35 MW), with construction expected to begin in Q3 2025 and initial energization targeted for early 2026.
• Project Dorothy 2 construction is progressing on schedule, with full energization anticipated in Q4 2025.
• Expanded hosting deployments with key customers like Blockware and Compass Mining.
• Launched 295 MW of new projects in Q2 2025, diversifying energy mix with wind-powered (Hedy, Ellen) and solar-powered (Annie) data centers.
• Increased power pipeline to 2.8 GW of long-term clean energy capacity.
• General and administrative expenses were flat year-over-year and improved from the prior quarter, demonstrating strong cost discipline.

Negatives

• Revenue for Q2 2025 was $6.2 million, a net decline of $3.5 million year-over-year from Q2 2024.
• Adjusted EBITDA declined by $3.0 million from Q2 2024 to Q2 2025, primarily due to Bitcoin halving in April 2024 and Hashprice volatility.
• Operating loss increased by $2.9 million from Q2 2024 to Q2 2025, reaching $(6.624) million.
• Interest expense increased by $0.747 million from Q2 2024 to Q2 2025, reaching $(1.196) million.
• Incurred $255 thousand in consent fees paid to Series B Preferred stockholder related to ATM raise and fundraising.
• Incurred $291 thousand in fees for lost power generation on the wind farm as part of securing land for Project Kati.
• Demand Response Service gross profit declined by $0.3 million from Q1 2025 due to exiting the seasonally higher winter pricing period.
• Hashprice declined by 5% to $51, dampening profit sharing.

Risks

• Bitcoin halving and subsequent Hashprice volatility significantly impacted revenue and Adjusted EBITDA.
• Market softness in Hashprice continues to be a headwind.
• Increased professional fees, including legal costs related to the Standby Equity Purchase Agreement and compliance costs.
• Exposure to consent fees for preferred stockholders during capital raises.
• Fees for lost power generation on wind farms during project development.
• Reliance on successful commissioning of new capacity (Dorothy 2, Kati 1) for future revenue growth.

Future Outlook

Revenue is expected to stabilize and grow over the next two years as the company commissions additional megawatts of Bitcoin Hosting capacity related to Project Dorothy 2 and Project Kati 1. Project Dorothy 2 is anticipated to achieve full energization in Q4 2025, and Project Kati 1 construction is expected to begin in Q3 2025 with initial energization targeted for early 2026. The company believes its increased power pipeline of 2.8 GW positions it to meet rising demand for sustainable computing infrastructure.

Management Comments

• "We are now focused on scale." John Belizaire, CEO.
• "We are pleased to report the fourth quarter in a row of Adjusted EBITDA growth, improving by 25.5% ($0.4M) in Q2 over the prior quarter amidst market softness in Hashprice, while maintaining a steady 19% gross margin." John Tunison, CFO.

Industry Context

The company operates in the rapidly evolving green data center sector, focusing on intensive computing applications like Bitcoin mining and AI. Its strategy of co-locating data centers with renewable energy sources (wind, solar, hydroelectric) aligns with the growing industry trend towards sustainable computing infrastructure. The financial results reflect the broader market challenges faced by Bitcoin miners, particularly the impact of the April 2024 halving event and subsequent Hashprice volatility, which has dampened profitability across the sector. Despite these headwinds, the company's focus on expanding its renewable energy-powered hosting capacity positions it within a high-growth niche of the data center market.

Comparison to Industry Standards

• The filing does not provide specific comparable financial metrics or operational benchmarks against direct competitors or global industry standards.
• While it mentions partnerships with 'Top-tier Miners' like Blockware and Compass Mining, it does not offer a detailed comparison of Soluna's performance (e.g., uptime, efficiency, cost per MWh, or specific project returns) against these or other industry players.
• The company's 19% gross margin and Adjusted EBITDA improvement are presented in isolation without external context for industry-wide comparison.

Stakeholder Impact

• Shareholders: Mixed impact. Sequential financial improvements and project growth could be positive, but year-over-year declines and market volatility pose risks. Potential dilution from equity offerings.
• Customers (Miners): Expanded hosting deployments and new data center capacity (Dorothy 2, Kati 1) provide more options and deeper relationships.
• Employees: Continued site development and project growth suggest stable or growing employment opportunities.
• Creditors/Investors (Spring Lane Capital): New funding for Project Kati indicates continued investor confidence in specific projects.

Next Steps

• Begin construction on Project Kati 1 in Q3 2025.
• Achieve full energization of Project Dorothy 2 in Q4 2025.
• Target initial energization for Project Kati 1 in early 2026.
• Continue commissioning additional megawatts of Bitcoin Hosting capacity over the next two years.

Key Dates

Recommendation

While Soluna Holdings shows promising operational progress with new green data center projects and sequential Adjusted EBITDA improvement, the significant year-over-year decline in revenue and profitability due to Bitcoin halving and Hashprice volatility presents ongoing challenges. The company's ability to execute on its ambitious expansion plans (Dorothy 2, Kati 1) and navigate market headwinds will be crucial for future performance. The recent capital raise provides liquidity for growth, but the overall picture is mixed, warranting a 'hold' position until clearer trends in profitability and project returns emerge.

Keywords

Soluna Holdings, SLNH, Bitcoin mining, green data centers, renewable energy, AI computing, Q2 2025 results, financial report, Adjusted EBITDA, Project Dorothy, Project Kati, Project Hedy, Project Ellen, Project Annie, clean energy capacity, Nasdaq