Soluna Shares Soar 31% as Project Dorothy Phase 2 Wraps and 166 MW Project Kati Breaks Ground

Introduction

Soluna Holdings Inc (NASDAQ: SLNH) is a company focused on converting excess solar, wind, and hydro energy into computational resources. By colocating modular data centers at clean power plants, Soluna provides batchable workloads, including Bitcoin mining, artificial intelligence (AI), and scientific research, while enhancing the economic viability of renewable energy generation.

Corporate Structure

Founded in 2018, Soluna is headquartered at 325 Washington Ave. Extension, Albany, NY, and has a secondary office in New York, NY. According to its LinkedIn profile, the company employs between 11 and 50 professionals with expertise in renewable energy development, data center operations, high-performance computing, AI, machine learning, and cryptocurrency mining.

Renewable energy by Thomas Richter

Recent Developments

On September 9, 2025, CEO John Belizaire presented at the H.C. Wainwright & Co. 27th Annual Global Investment Conference in New York City. In mid-August 2025, Soluna completed Phase 2 of Project Dorothy 2, which involved deploying 32 MW of capacity. Phase 3 commissioning is expected to begin by mid-September, with full build-out anticipated by October 31, 2025. The company also announced the groundbreaking ceremony for Project Kati—a 166 MW wind-powered data center in Willacy County, Texas—scheduled for September 18, 2025. Galaxy Digital has been identified as the initial customer for the first 83 MW of Bitcoin hosting capacity, with a subsequent 83 MW phase intended to support AI and high-performance computing (HPC) workloads.

Financial and Strategic Analysis

As of the September 15, 2025 close, SLNH shares traded at $0.9397, reflecting a 31.11% increase on a volume of 11,570,404 shares on the NASDAQ. Recent SEC filings include:

• Form 8-K on September 11, 2025, reporting material events under Items 7.01 and 9.01.
• Form 8-K on September 9, 2025, noting unscheduled corporate developments.
• Prospectus 424B5 on September 2, 2025, registering up to $8,585,280 of common stock.

From the Prospectus:

• Public float is $37,005,840, based on 24,507,179 non-affiliate shares at $1.51 per share as of July 11, 2025.
• Securities sold in the prior 12 months totaled $3,750,000 under Form S-3.

Soluna’s strategy includes employing “at-the-market” offerings to generate capital while utilizing its MaestroOS™ software platform to enhance computing efficiency. Operational metrics highlighted on the company website include 2.9 EH/s nameplate compute power, 25.7 J/TH efficiency, 89 MW energized capacity, and 123 MW of available capacity. The company also reports a 2.8 GW renewable power pipeline and 140,812 MWh of curtailed energy monetized.

Market Position and Industry Context

Soluna operates at the intersection of renewable energy and compute-intensive workloads, transforming curtailed energy into a revenue-generating asset. This approach offers a potential alternative to battery storage and grid upgrades. As AI infrastructure spending could exceed $7 trillion over the next decade, Soluna’s model caters to public and private enterprises seeking lower-carbon compute solutions. The company’s public float and share price reflect small-cap market dynamics, while its partnership with Galaxy Digital indicates its presence in blockchain and emerging compute markets.

tl;dr

SLNH shares increased by 31.11% to $0.9397 on September 15, 2025. Phase 2 of Project Dorothy 2 was deployed in mid-August, with Phase 3 commissioning set for mid-September and completion expected by October 31. Groundbreaking for the 166 MW Project Kati in Texas is scheduled for September 18, 2025, with an initial offering of 83 MW of Bitcoin hosting capacity. A prospectus filed on September 2 aims to raise up to $8.6 million through at-the-market stock sales.