Soluna Holdings, Inc. ("Soluna" or the "Company"), (NASDAQ:SLNH), a developer of green data centers for intensive computing applications, including Bitcoin mining and AI, announced its June 2025 project site-level operations, developments, and updates.

The Company has provided the following Corporate and Site Updates.

Key Company Metrics:

The monthly metrics are now available here.

Corporate Highlights:

• $20M Secured from Spring Lane Capital to Launch Project Kati 1 – New Construction begins Q3 2025. Spring Lane to support up to $100M across Soluna's pipeline. Learn more here.
• Blockware Partnership Expands Over 50% at Project Dorothy 2 – Now totaling 8 MW of sustainable hosting capacity. Read more here.
• Compass Mining Renews and Expands into Project Dorothy 2 – Long-term partnership now spans 13 MW across the Dorothy campus. Read more here.
• Soluna Featured in Inside Climate News - CEO John Belizaire speaks with Arcelia Martin on using stranded renewables to power the future of computing. Read the article here.
• CEO Featured on The Blockware Podcast – John Belizaire on Bitcoin's green future, infrastructure growth, and the trillion-dollar tsunami ahead. Watch it here.
• CEO Interviewed on Scaling Clean – A deep dive into Soluna's model, the convergence of computing and clean energy, and building with communities in mind. Listen here.
• New Blog - Explores the risks of deep-sea mining for battery materials and positions Soluna's computing model as a scalable alternative. Read it here.
• Power Pipeline Grows – Up to 2.8 GW of Long-Term Capacity

Key Project Updates:

Project Dorothy 1A (25 MW, Bitcoin Hosting) / Project Dorothy 1B (25 MW, Bitcoin Prop-Mining):

• The site has continued to navigate through extreme heat conditions, operating at greater than 90% uptime.
• Filter replacement is underway to assist with airflow optimization.
• Fleet upgrade underway for two hosting customers to drive increases in hashrate.
• A review is underway at Project Dorothy 1B with our JV partner to upgrade aging miners and enhance hashrate performance.

Project Dorothy 2 (48 MW Under Construction, Bitcoin Hosting):

• The three build phases (16 MW, 14 MW, and 18 MW) are all tracking on schedule.
• Additional temporary support has been onboarded to complete the deployment of miners for Phase 1 by next week.
• Power commissioning has started for Phase 2 (14 MW) and is expected to be completed by the end of the month in advance of the planned substantial completion date of early August.
• We are in the process of receiving miners for Phase 2 and deploying them as power commissioning efforts are completed.

Project Sophie (25 MW, Bitcoin Hosting with Profit Share, AI Hosting):

• The fleet expansion for an existing customer was completed, and the site has maintained steady state operations throughout the month.

Project Kati (166 MW Under Development, Bitcoin Hosting and AI):

• ERCOT has completed modeling for Phase 1 (83 MW), which reached its Production Load Date on July 2, 2025.
• Contracting for Kati 1 (83 MW) construction of Bitcoin Hosting is underway, and mobilization timing is in the process of being finalized. The project is expected to be constructed in at least two phases, including a 35 MW phase.

Pipeline Highlights:

• Development activities have launched on Projects Hedy, Ellen, and Annie, with progress across PPA negotiations, ERCOT planning, and land acquisition.
• The long-term pipeline increased by 200 MW, now reaching 2.8 GW, driven by new curtailment assessments and active term sheet discussions.
• A project scoring system is being developed to assess AI hosting potential across the portfolio.

Customer Success:

• Completed contract for partnership expansion at Dorothy 2 for 30 MW. This marks the third expansion with this customer, who first deployed with Soluna at Project Sophie in 2023.
• Completed contract renewal and expansion with Compass Mining. The expanded agreement includes a contract renewal at Soluna's Project Dorothy 1 site and a major expansion into its adjacent site, Project Dorothy 2, marking a total deployment of approximately 13 megawatts (MW) of computing capacity across the two locations.
• Completed hosting expansion agreement with Blockware. Following their initial 5 megawatt (MW) deployment in April, Blockware is adding 3 MW of hosting capacity at Soluna's Project Dorothy 2 data center in Texas, bringing their total contracted footprint at the site to 8 MW.
• All Project Dorothy 2 pipeline contracting completed for 2025; 48 MWs fully marketed and at full hosting capacity, both with brand new customers and current partner expansions.