Soluna Holdings (SLNH): Customer Map and Commercial Risks

Soluna monetizes by hosting energy-hungry compute workloads—primarily Bitcoin miners and AI/HP compute—at its renewables-powered data centers, charging a mix of per-MWh fees, fixed hosting fees, and profit-share arrangements. The company leverages curtailed renewable generation to lower marginal hosting cost and sells energized colocation plus ancillary services to third-party miners and compute customers, translating energy arbitrage into recurring hosting revenue. For investors, the critical lens is customer concentration, contract structure, and the company’s pivot from running cloud services to pure colocation. Learn more about how we source and structure these insights at https://nullexposure.com/.

What Soluna sells and how that shapes counterparty economics

Soluna operates as a service provider and seller of data center hosting, with customers leasing space and power and paying structured fees tied to energy usage and, in some cases, a share of mining economics. Contracts are shorter-duration and often usage-based, which creates flexibility but also revenue variability. The business model is sensitive to a small number of large counterparties and to North American site concentration, making client retention and contract terms the principal drivers of near-term revenue performance.

Commercial posture: contracts typically run 12–24 months and often include monthly curtailment commitments and per-MWh pricing combined with profit-sharing.
Concentration risk: one unnamed customer accounted for 56% of hosting revenue and 28% of total revenue in 2024, demonstrating that client churn can materially move results.
Geographic footprint: hosting revenue is concentrated in North America (Project Dorothy in Texas and Project Sophie in Kentucky are primary revenue sources).

Explore related commercial signals and vendor relationships at https://nullexposure.com/.

Active and notable customer relationships (what each partner does for Soluna)

Below I list every customer relationship surfaced in the public record and summarize the commercial facts investors need to know.

Atlas Cloud

Soluna has signed Atlas Cloud as a customer to provide AI compute capacity, indicating a pivot toward hosting AI workloads in addition to crypto hosting; this expands Soluna’s addressable hosting mix beyond pure mining. See the Data Center Dynamics coverage from March 2026: https://www.datacenterdynamics.com/en/news/soluna-to-provide-ai-compute-to-atlas-cloud/.

Galaxy Digital (expanded deployment at Project Kati 1 — 48 MW)

Galaxy Digital is expanding its deployment at Soluna’s Project Kati 1 with an incremental 48 MW commitment, bringing the site total to 83 MW and reinforcing Galaxy as a large-scale hosted miner at Soluna’s flagship project. The deployment was reported in Soluna’s FY2025 commentary: https://investingnews.com/soluna-reports-q3-25-results/.

Galaxy (first customer at Kati 1)

Project Kati 1 was developed as a Bitcoin hosting site with Galaxy secured as the first committed customer, underscoring Galaxy’s strategic importance to the project’s initial cash flow profile. See Soluna’s project announcement and customer disclosure in FY2025 reporting: https://investingnews.com/soluna-breaks-ground-on-its-largest-site-to-date-project-kati/.

Blockware

Blockware expanded capacity within Soluna’s Project Dorothy with a 6 MW increase, demonstrating an ability for incremental upsells inside established facilities that incur low capital friction for Soluna. This operational flexibility supports organic revenue expansion inside existing footprints: https://finviz.com/news/321372/soluna-slnh-expands-blockware-partnership-with-6-mw-capacity-increase-at-project-dorothy-1.

Canaan Inc.

Canaan will deploy 20 MW of Bitcoin miners at Soluna’s wind-powered Project Dorothy, reflecting OEM-to-host customer relationships where miner manufacturers colocate machines to showcase or operate hardware at renewable-powered facilities. This deal reinforces Soluna’s green-mining positioning: https://stockstotrade.com/news/soluna-holdings-inc-slnh-news-2025_10_16/.

NVIDIA

NVIDIA is referenced in Soluna’s FY2024 filing as a market factor for H100 GPU supply dynamics that influenced a fixed-cost agreement with an HPE partner; while not a direct hosting customer, NVIDIA GPU supply and pricing materially influence Soluna’s HPC/AI hosting economics when Soluna rents GPU-backed compute capacity. See Soluna’s 2024 Form 10-K discussion of GPU market dynamics: slnh-2024-12-31.

Constraints and what they imply about Soluna’s operating model

Public disclosures and filing excerpts reveal a set of operating constraints that are company-level signals rather than relationship-specific facts:

Contracting posture: Soluna’s hosting contracts are short-term (12–24 months) and often include monthly curtailment clauses, creating recurring but potentially lumpy revenue and the need to re-contract capacity frequently. This raises renewal risk and requires active sales/relationship management.
Pricing mechanics: Customers frequently pay per-MWh rates or a combination of fixed fees and profit-sharing, so Soluna’s revenue tracks both energy consumed and miners’ profitability—this links Soluna’s top line to crypto and compute market cycles.
Counterparty size and criticality: The company explicitly hosts very large enterprise miners (“Hyperscale”), making a small number of counterparties disproportionately important to financials. The 2024 concentration event—one customer contributing 56% of hosting revenue—demonstrates single-counterparty criticality.
Geographic concentration: Revenue is heavily North America–centric, driven by Project Dorothy and Project Sophie, concentrating exposure to local grid conditions and regional regulatory risk.
Lifecycle signals: Relationships are predominantly active, but the filings note terminated contracts and a deliberate winding-down of direct Soluna Cloud compute operations—Soluna will focus on colocation services for AI instead of operating an active cloud business.
Segment role: Hosting and services are the revenue core—colocation, power, network, and management services—with the company acting as both seller and service provider.

Key investment implications

Revenue growth is feasible but lumpy. Upsells like Blockware’s 6 MW and Galaxy’s Kati expansion show organic capacity monetization, but short contract lengths and high concentration create earnings volatility.
Retention of hyperscale customers is central. Losing a large client has precedent and consequence; the company has experienced a major contract termination in Q4 2024 that materially impacted revenue.
Diversification into AI hosting is strategically positive but execution-dependent. Atlas Cloud and GPU market dynamics (NVIDIA) signal a pathway to broaden demand beyond mining, yet Soluna has stepped back from operating a cloud business to focus on colocation—a move that limits operating upside but reduces operational complexity.

If you want a deeper counterparty risk profile or a comparative view across alternative hosts and hyperscalers, start with our coverage at https://nullexposure.com/.

Actionable next steps for investors

Monitor quarterly renewal announcements for Project Dorothy, Sophie, and Kati commitments—those renewals are the clearest near-term revenue signal.
Track GPU availability and pricing headlines from NVIDIA as a proxy for the economics of AI GPU hosting at Soluna.
Evaluate customer mix updates in 10-Qs/10-Ks for shifts in the top-two customer contribution metrics; any movement away from large single-customer concentration materially alters risk.

For a structured briefing or to commission a tailored counterparty analysis, visit https://nullexposure.com/ and request our investor packet.

Conclusion: Soluna’s model converts renewable-energy arbitrage into hosting revenue with strong upside from incremental capacity sales, but short contracts, concentrated counterparties, and North American site concentration make customer retention and contract terms the dominant investment risks.

SLNH customer relationships