MARKET WIRE NEWS

Soluna Reports Q2'25 Results

Source: Business Wire

Steady gross margin, continued improvement in Three Month Adjusted EBITDA of +$2.3 million since Q3 2024, and energized Dorothy 2

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 financial results for the second quarter ended June 30, 2025.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20250815180089/en/

Soluna Reports Q2-2025 Gross Profit by Quarter

“Second quarter results demonstrate continued Adjusted EBITDA improvement and margin strength in our operating sites. In Q2, we also welcomed our first customers into Project Dorothy 2, the expansion of our first major site in Texas. We rebuilt our capital raising toolkit, secured our first at-the-market offering issuance, and prepared for a successful equity offering in July. We expanded our partnership with Spring Lane Capital to help launch our next flagship data center, Project Kati. We are now focused on scale,” said John Belizaire, CEO of Soluna Holdings.

“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,” said John Tunison, CFO of Soluna.

Q2 2025 Operational and Corporate Highlights:

  • Project Kati Land Secured and Subsequently Closed $20M to Launch 35 MW Kati 1 – Soluna has secured land and $20M in funding from Spring Lane Capital to begin construction on Kati 1, the first 35 MW phase of our 166 MW wind-powered data center. Construction is expected to begin in Q3, with initial energization targeted for early 2026.
  • Expanded Hosting Deployments with Key Customers – Increased deployments of existing partners Blockware, Compass Mining, and other Top-tier Miners, as Dorothy 1 space became available and Dorothy 2 came online, deepening relationships with some of the industry’s most established miners.
  • Project Dorothy 2 Construction On Track – All three building phases progressing on schedule, with full energization anticipated in Q4.
  • 295 MW of New Projects Launched in Q2, Including Our First Solar-Powered Data Center – Including wind-powered Projects Hedy and Ellen, and solar-powered Project Annie. We believe these additions mark a major step in scaling Renewable Computing and diversifying our energy mix across Texas.
  • Increased Power Pipeline to 2.8 GW of Long-Term Capacity – With 2.8 GW of long-term clean energy capacity in our pipeline, Soluna anticipates that it will be positioned to meet the rising demand for sustainable computing infrastructure at scale.

Second Quarter Finance and Operations Highlights:

  • Net loss for the three months declined Q2 2024 to Q2 2025 by ($1.4 million) – driven by the above-mentioned Revenue, Gross Profit and SG&A drivers with a $2.9 million increase in Operating Loss, increased by $1.3 million combined higher Interest, Tax and Other Expenses which include consent fees to Preferred B holder and Kati wind farm loss generation fee offset by the prior year loss on convertible debt and warrant revaluation for $5.6 million.
  • Adjusted EBITDA improved $0.4 million from Q1 2025 to Q2 2025, primarily driven by a steady 19% gross margin, controlling expenses, and no significant interconnection outages. This resilient progress was despite headwinds from average Hashprice declining by 5% to $51, dampening profit sharing.
  • Adjusted EBITDA declined ($3.0 million) from Q2 2024 to Q2 2025, driven primarily by Bitcoin halving in April 2024 and Hashprice volatility ($0.6M) from fewer machines online and efficiency at Dorothy 1B. Professional fees were higher ($0.2M), including legal costs related to the Standby Equity Purchase Agreement and compliance costs.
    In connection with our successful ATM raise and related fundraising, we incurred ($255) thousand of consent fees paid to the Series B Preferred stockholder. As part of securing land for Project Kati, we incurred ($291) thousand fees for lost power generation on the wind farm.
  • Gross profit for our operating sites in Soluna Digital remained steady compared to the prior quarter Q1 2025, Q2 2025 reported strong cost discipline and gross margin stability, despite a ($0.3M) decline in Demand Response Service gross profit from exiting the seasonally higher winter pricing period.
  • Revenue for Q2 2025 is $6.2 million, a Net Decline of $3.5 million for the three months Year-over-year. Four factors drove the decrease. Bitcoin halving and subsequent Hashprice volatility ($2.0 million), the change in commercial model mix to more Profit Sharing (fully offset by decline in cost of revenue by ($0.8 million) for no Gross Profit impact), lower Prop Mining volume related to site availability and miner efficiency ($0.6 million), and lower Demand Response Services driven by increased participation rate within ERCOT ($0.1 million).
  • Revenue Generation Poised for Growth – We expect Revenue to stabilize and grow as we continue to commission additional MW of Bitcoin Hosting capacity over the next two years, related to Dorothy 2 and Kati 1, as illustrated in the recently published 2025 Earnings Power Presentation .
  • Robust Cash Reserves – Quarter-end unrestricted cash was $9.9 million , a $2.0 million rise since December 31, 2024.
  • General and administrative expenses were flat year-over-year and improved from the prior quarter. Strong cost discipline has enabled these costs to be contained even as site development continues to grow substantially.

Q2 2025 Revenue & Cost of Revenue by Project Site

Soluna Digital

(Dollars in thousands)

Project

D orothy

1 B

Project

D orothy

1 A

Project

D orothy

2

Project

S ophie

Other

Total

Cryptocurrency mining revenue

$

2,861

$

-

$

-

$

-

$

-

$

2,861

Data hosting revenue

-

1,653

210

1,273

-

3,136

Demand response services

-

-

-

-

161

161

Total revenue

2,861

1,653

210

1,273

161

6,158

Cost of cryptocurrency mining, exclusive of depreciation

$

1,767

$

-

$

-

$

-

$

-

$

1,767

Cost of data hosting revenue, exclusive of depreciation

-

851

346

420

-

1,617

Cost of cryptocurrency mining revenue- depreciation

1,074

-

-

-

-

1,074

Cost of data hosting revenue- depreciation

-

274

136

102

-

512

Total cost of revenue

2,841

1,125

482

522

-

4,970

Gross profit

$

20

$

528

$

(272

)

$

751

$

161

$

1,188

Gross Profit Margin %

0.7

%

31.9

%

(129.5

%)

59.0

%

100.0

%

19.3

%

Q2 2024 Revenue & Cost of Revenue by Project Site

Soluna Digital
(Dollars in thousands)

Project

Dorothy

1B

Project

Dorothy

1A

Project

Dorothy 2

Project

Sophie

Other

Total

Cryptocurrency mining revenue $

4,484

$

-

$

-

$

-

$

-

$

4,484

Data hosting revenue

-

3,567

-

1,331

-

4,898

Demand response services

-

-

-

-

293

293

Total revenue

4,484

3,567

-

1,331

293

9,675

Cost of cryptocurrency mining, exclusive of depreciation

1,883

-

-

-

-

1,883

Cost of data hosting revenue, exclusive of depreciation

-

1,758

-

418

-

2,176

Cost of cryptocurrency mining revenue- depreciation

1,065

-

1,065

Cost of data hosting revenue- depreciation

290

-

151

-

441

Total cost of revenue $

2,948

$

2,048

$

-

$

569

$

-

$

5,565

Gross Profit $

1,536

$

1,519

$

-

$

762

$

293

$

4,110

Gross Profit Margin %

34.3

%

42.8

%

n/a

57.3

%

100.0

%

42.5

%

The audited financial statements and Annual Report on Form 10-K for the year ended December 31, 2024, filed with the U.S. Securities and Exchange Commission (“SEC”) on March 31, 2025, are available online .

Our current Investor Presentation can be found here .

Our 2025 Earnings Power Presentation can be found here .

Soluna’s glossary of terms can be found here .

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates,” “confident” and similar statements. Other examples of forward-looking statements may include, but are not limited to, (i) statements of Company plans and objectives, including the completion of Projects Kati 1, Dorothy 2, Hedy, Ellen, and Annie, and the closing of the land purchase for Project Kati, (ii) statements of future economic performance, and (iii) statements of assumptions underlying other statements about the Company or its business. Soluna may also make written or oral forward-looking statements in its periodic reports to the SEC , in its annual report to shareholders, in press releases and other written materials and in oral statements made by its officers, directors or employees to third parties. Statements that are not historical facts, including but not limited to statements about Soluna’s beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties, further information regarding which is included in the Company's filings with the SEC. All information provided in this press release is as of the date of the press release, and Soluna undertakes no duty to update such information, except as required under applicable law.

Non-GAAP Measures

In addition to figures prepared in accordance with generally accepted accounting principles (“GAAP”), Soluna from time to time may present alternative non-GAAP performance measures, e.g., EBITDA, adjusted EBITDA, adjusted net profit/loss, adjusted earnings per share, free cash flow, both on a company basis and on a project-level basis, among others. EBITDA is defined as earnings before interest, taxes, and depreciation and amortization. Adjusted EBITDA is defined as EBITDA adjusted for stock-based compensation costs, provision for credit losses, loss on sale of fixed assets, impairment on fixed assets, fair value adjustment on Standby Equity Purchase Agreement draws, and loss (gain) on debt extinguishment and revaluation, net. Project-level measures may not take into account a full allocation of corporate expenses. These measures should be considered in addition to, but not as a substitute for, the information prepared in accordance with GAAP. Alternative performance measures are not subject to GAAP or any other generally accepted accounting principles. Other companies may define these terms in different ways. See our annual report on Form 10-K for the year ended December 31, 2024, for an explanation of how management uses these measures in evaluating its operations. Investors should review the non-GAAP reconciliations provided below and not rely on any single financial measure to evaluate the Company’s business.

About Soluna Holdings, Inc. (Nasdaq: SLNH)

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. To learn more, visit solunacomputing.com and follow us on:

LinkedIn: https://www.linkedin.com/company/solunaholdings/
X (formerly Twitter): x.com/solunaholdings
YouTube: youtube.com/c/solunacomputing
Newsletter: bit.ly/solunasubscribe
Resource Center: solunacomputing.com/resources

Soluna regularly posts important information on its website and encourages investors and potential investors to consult the Soluna investor relations and investor resources sections of its website regularly.

Soluna Holdings, Inc. and Subsidiaries

Condensed Consolidated Balance Sheets

As of June 30, 2025 (Unaudited) and December 31, 2024

(Dollars in thousands, except per share)

June 30, 2025

December 31, 2024

Assets

Current Assets:

Cash

$

9,878

$

7,843

Restricted cash

2,215

1,150

Accounts receivable, net (allowance for expected credit losses of $244 at June 30, 2025 and December 31, 2024)

2,649

2,693

Prepaid expenses and other current assets

2,236

1,781

Equipment held for sale

-

28

Total Current Assets

16,978

13,495

Restricted cash, noncurrent

3,060

1,460

Other assets

1,107

2,724

Deposits and credits on equipment

1,046

5,145

Property, plant and equipment, net

56,521

47,283

Intangible assets, net

12,957

17,620

Operating lease right-of-use assets

283

313

Total Assets

$

91,952

$

88,040

Liabilities and Stockholders’ Equity

Current Liabilities:

Accounts payable

$

3,942

$

2,840

Accrued liabilities

5,934

6,785

Accrued interest payable

3,286

2,275

Contract liability

19,348

20,015

Current portion of debt

13,255

14,444

Income tax payable

62

37

Customer deposits

1,962

1,416

Operating lease liability

63

61

Total Current Liabilities

47,852

47,873

Other liabilities

333

235

Long-term debt

10,021

7,061

Operating lease liability

220

252

Deferred tax liability, net

4,207

5,257

Total Liabilities

62,633

60,678

Commitments and Contingencies (Note 10)

Stockholders’ Equity:

9.0% Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share, $25.00 liquidation preference; authorized 6,040,000; 4,953,545 shares issued and outstanding as of June 30, 2025 and December 31, 2024

5

5

Series B Preferred Stock, par value $0.0001 per share, authorized 187,500; 62,500 shares issued and outstanding as of June 30, 2025 and December 31, 2024

Common stock, par value $0.001 per share, authorized 75,000,000; 19,095,863 shares issued and 19,055,122 shares outstanding as of June 30, 2025 and 10,647,761 shares issued and 10,607,020 shares outstanding as of December 31, 2024

19

11

Additional paid-in capital

323,557

315,607

Accumulated deficit

(329,242

)

(314,304

)

Common stock in treasury, at cost, 40,741 shares at June 30, 2025 and December 31, 2024

(13,798

)

(13,798

)

Total Soluna Holdings, Inc. Stockholders’ (Deficit) Equity

(19,459

)

(12,479

)

Non-Controlling Interest

48,778

39,841

Total Stockholders’ Equity

29,319

27,362

Total Liabilities and Stockholders’ Equity

$

91,952

$

88,040

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

Soluna Holdings, Inc. and Subsidiaries

Condensed Consolidated Statements of Operations (Unaudited)

For the Three and Six Months Ended June 30, 2025 and 2024

(Dollars in thousands, except per share)

Three Months Ended

Six Months Ended

June 30,

June 30,

2025

2024

2025

2024

Cryptocurrency mining revenue

$

2,861

$

4,484

$

5,860

$

10,880

Data hosting revenue

3,136

4,898

5,538

10,176

Demand response service revenue

161

293

668

1,168

High-performance computing service revenue

-

-

28

-

Total revenue

6,158

9,675

12,094

22,224

Operating costs:

Cost of cryptocurrency mining revenue, exclusive of depreciation

1,767

1,883

3,721

3,724

Cost of data hosting revenue, exclusive of depreciation

1,617

2,176

2,945

4,427

Cost of high-performance computing services

-

-

7

-

Cost of cryptocurrency mining revenue- depreciation

1,074

1,065

2,147

2,152

Cost of data hosting revenue- depreciation

512

441

913

877

Total costs of revenue

4,970

5,565

9,733

11,180

Operating expenses:

General and administrative expenses, exclusive of depreciation and amortization

5,397

5,382

11,344

9,378

Depreciation and amortization associated with general and administrative expenses

2,403

2,403

4,807

4,805

Total general and administrative expenses

7,800

7,785

16,151

14,183

Impairment on fixed assets

12

-

12

130

Operating loss

(6,624

)

(3,675

)

(13,802

)

(3,269

)

Interest expense

(1,196

)

(449

)

(2,034

)

(873

)

(Loss) gain on debt extinguishment and revaluation, net

-

(5,600

)

551

(8,698

)

Loss on sale of fixed assets

(22

)

(21

)

(22

)

(21

)

Other expense, net

(546

)

(49

)

(860

)

(25

)

Loss before income taxes

(8,388

)

(9,794

)

(16,167

)

(12,886

)

Income tax benefit, net

608

649

1,033

1,197

Net loss

(7,780

)

(9,145

)

(15,134

)

(11,689

)

(Less) Net (loss) income attributable to non-controlling interest

(398

)

1,728

(196

)

4,438

Net loss attributable to Soluna Holdings, Inc.

$

(7,382

)

$

(10,873

)

$

(14,938

)

$

(16,127

)

Basic and Diluted loss per common share:

Basic & Diluted loss per share

$

(0.69

)

$

(2.97

)

$

(1.55

)

$

(5.68

)

Weighted average shares outstanding (Basic and Diluted)

14,991,125

4,563,696

13,473,983

3,683,558

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

Soluna Holdings, Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows (Unaudited)

For the Six Months Ended June 30, 2025 and 2024

Six Months Ended June 30,

(Dollars in thousands)

2025

2024

Operating Activities

Net loss

$

(15,134

)

$

(11,689

)

Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation expense

3,121

3,091

Amortization expense

4,746

4,743

Stock-based compensation

3,789

2,029

Deferred income taxes

(1,051

)

(1,259

)

Impairment on fixed assets

12

130

Provision for credit losses

-

244

Amortization of operating lease asset

30

122

(Gain) loss on debt extinguishment and revaluation, net

(551

)

8,698

Amortization of deferred financing costs and discount on notes

338

59

SEPA fair value revaluation

118

-

Loss on sale of fixed assets

22

21

Changes in operating assets and liabilities:

Accounts receivable

44

(486

)

Prepaid expenses and other current assets

(455

)

(10,767

)

Other long-term assets

1,607

1

Accounts payable

1,102

353

Contract liability

(667

)

-

Operating lease liabilities

(30

)

(123

)

Other liabilities and customer deposits

644

(404

)

Accrued liabilities and interest payable

1,042

1,764

Net cash used in operating activities

(1,273

)

(3,473

)

Investing Activities

Purchases of property, plant and equipment

(12,365

)

(278

)

Purchases of intangible assets

(83

)

(64

)

Proceeds from sale of property, plant and equipment

-

215

Deposits on equipment, net

4,099

(2,096

)

Net cash used in investing activities

(8,349

)

(2,223

)

Financing Activities

Proceeds from common stock warrant exercises

-

2,304

Proceeds from sale of common stock on SEPA

2,005

-

Proceeds from notes

5,269

13,220

Proceeds from sale of common stock on ATM

2,178

-

Payments on notes and deferred financing costs

(3,275

)

(1,910

)

Payments on ATM

(132

)

-

Contributions from non-controlling interest

11,852

-

Distributions to non-controlling interest

(3,575

)

(5,776

)

Net cash provided by financing activities

14,322

7,838

Increase in cash & restricted cash

4,700

2,142

Cash & restricted cash – beginning of period

10,453

10,367

Cash & restricted cash – end of period

$

15,153

$

12,509

Supplemental Disclosure of Cash Flow Information

Interest paid on debt

685

203

Warrant consideration in relation to convertible notes and revaluation of warrant liability

-

7,648

Notes converted to common stock

-

3,712

Noncash membership distribution accrual

323

456

Warrant consideration in relation to Soluna Cloud

-

314

Fair value consideration for Green Cloud issuance of shares

810

-

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

Segment Information

The following table details revenue, cost of revenues, and other operating costs for the Company’s reportable segments for three months ended June 30, 2025 and 2024, and reconciles to net income (loss) on the consolidated statements of operations:

For the three months ended June 30, 2025

Cryptocurrency

Mining

Data

Center

Hosting

High-

Performance

Computing

Services

Total

Segment Revenue: Revenue from external customers

$

2,861

$

3,136

$

-

$

5,997

Reconciliation of revenue

Demand response revenue (a)

161

Total consolidated revenue

6,158

Less: Segment cost of revenue

Utility costs

1,278

471

-

1,749

Wages, benefits, and employee related costs

203

531

-

734

Facilities and Equipment costs

250

521

-

771

Cost of revenue- depreciation

1,074

512

-

1,586

Other cost of revenue*

148

364

-

512

Total segment cost of revenue

2,953

2,399

-

5,352

General and administrative expenses

40

94

110

244

Impairment on fixed assets

-

12

-

12

Segment operating income (loss)

$

(132

)

$

631

$

(110

)

$

389

For the three months ended June 30, 2024

Cryptocurrency

Mining

Data

Center

Hosting

High-

Performance

Computing

Services

Total

Segment Revenue: Revenue from external customers

$

4,484

$

4,898

$

-

$

9,382

Reconciliation of revenue

Demand response revenue (a)

-

293

9,675

Less: Segment cost of revenue

Utility costs

1,322

1,363

-

2,685

Wages, benefits, and employee related costs

190

468

-

658

Facilities and Equipment costs

336

323

-

659

Cost of revenue- depreciation

1,065

441

-

1,506

Other cost of revenue*

127

92

-

219

Total segment cost of revenue

3,040

2,687

-

5,727

General and administrative expenses

106

146

58

310

Impairment on fixed assets

-

-

-

-

Segment operating income

$

1,338

$

2,065

$

(58

)

$

3,345

(a)

Demand response service revenue is included as a reconciling item of total revenue and not included as part of segment gross profit or loss .

*

Other cost of revenue includes insurance, outside service costs and margins, and general costs .

The following table presents the reconciliation of segment operating income (loss) to net income (loss) before taxes:

For the three months ended June 30,

2025

2024

Segment operating income

$

389

$

3,345

Reconciling Items:

Elimination of intercompany costs

381

162

Other revenue (a)

161

293

General and administrative, exclusive of depreciation and amortization (b)

(5,152

)

(5,072

)

General and administrative, depreciation and amortization

(2,403

)

(2,403

)

Interest expense

(1,196

)

(449

)

Loss on debt extinguishment and revaluation, net

-

(5,600

)

Loss on sale of fixed assets

(22

)

(21

)

Other expense, net

(546

)

(49

)

Net loss before taxes

$

(8,388

)

$

(9,794

)

(a)

Demand response service revenue is included as a reconciling item of total revenue and not included as part of segment gross profit or loss

(b)

The reconciling general and administrative expense, exclusive of depreciation and amortization represent corporate and unallocated general and administrative expenses for the three months ended June 30, 2025 and 2024.

The following table details revenue, cost of revenues, and other operating costs for the Company’s reportable segments for six months ended June 30, 2025 and 2024, and reconciles to net income (loss) on the consolidated statements of operations:

For the six months ended June 30, 2025

Cryptocurrency

Mining

Data

Center

Hosting

High-

Performance

Computing

Services

Total

Segment Revenue: Revenue from external customers

$

5,860

$

5,538

$

28

$

11,426

Reconciliation of revenue

Demand response revenue (a)

668

Total consolidated revenue

12,094

Less: Segment cost of revenue

Utility costs

2,690

861

-

3,551

Wages, benefits, and employee related costs

421

1,001

7

1,429

Facilities and Equipment costs

457

886

-

1,343

Cost of revenue- depreciation

2,147

913

-

3,060

Other cost of revenue*

288

508

-

796

Total segment cost of revenue

6,003

4,169

7

10,179

General and administrative expenses

55

175

269

499

Impairment on fixed assets

-

12

-

12

Segment operating income (loss)

$

(198

)

$

1,182

$

(248

)

$

736

For the six months ended June 30, 2024

Cryptocurrency

Mining

Data

Center

Hosting

High-

Performance

Computing

Services

Total

Segment Revenue: Revenue from external customers

$

10,880

$

10,176

$

-

$

21,056

Reconciliation of revenue

Demand response revenue (a)

-

1,168

22,224

Less: Segment cost of revenue

Utility costs

2,699

2,720

-

5,419

Wages, benefits, and employee related costs

381

927

-

1,308

Facilities and Equipment costs

511

622

-

1,133

Cost of revenue- depreciation

2,152

877

-

3,029

Other cost of revenue*

304

309

-

613

Total segment cost of revenue

6,047

5,455

-

11,502

General and administrative expenses

107

153

58

318

Impairment on fixed assets

130

-

-

130

Segment operating income (loss)

$

4,596

$

4,568

$

(58

)

$

9,106

(a)

Demand response service revenue is included as a reconciling item of total revenue and not included as part of segment gross profit or loss .

*

Other cost of revenue includes insurance, outside service costs and margins, and general costs .

The following table presents the reconciliation of segment operating income (loss) to net income (loss) before taxes:

For the six months ended June 30,

2025

2024

Segment operating income

$

736

$

9,106

Reconciling Items:

Elimination of intercompany costs

446

322

Other revenue (a)

668

1,168

General and administrative, exclusive of depreciation and amortization (b)

(10,845

)

(9,060

)

General and administrative, depreciation and amortization

(4,807

)

(4,805

)

Interest expense

(2,034

)

(873

)

Gain (loss) on debt extinguishment and revaluation, net

551

(8,698

)

Loss on sale of fixed assets

(22

)

(21

)

Other expense, net

(860

)

(25

)

Net loss before taxes

$

(16,167

)

$

(12,886

)

(a)

Demand response service revenue is included as a reconciling item of total revenue and not included as part of segment gross profit or loss

(b)

The reconciling general and administrative expense, exclusive of depreciation and amortization represent corporate and unallocated general and administrative expenses for the six months ended June 30, 2025 and 2024.

Gross Profit Breakout:

The following table summarizes the balances for the project sites for cryptocurrency mining revenue, data hosting revenue, high-performance computing service revenue, demand response revenue, cost of cryptocurrency mining revenue, exclusive of depreciation, cost of data hosting revenue, exclusive of depreciation, cost of high-performance computing services, and cost of depreciation during the three months ended June 30, 2025:

Soluna Digital

(Dollars in thousands)

Project

Dorothy

1B

Project

Dorothy

1A

Project

Dorothy

2

Project

S ophie

Other

Total

Cryptocurrency mining revenue

$

2,861

$

-

$

-

$

-

$

-

$

2,861

Data hosting revenue

-

1,653

210

1,273

-

3,136

Demand response services

-

-

-

-

161

161

Total revenue

2,861

1,653

210

1,273

161

6,158

Cost of cryptocurrency mining, exclusive of depreciation

1,767

-

-

-

-

1,767

Cost of data hosting revenue, exclusive of depreciation

-

851

346

420

-

1,617

Cost of high-performance computing service revenue

-

-

-

-

-

-

Cost of cryptocurrency mining revenue- depreciation

1,074

-

-

-

-

1,074

Cost of data hosting revenue- depreciation

-

274

136

102

-

512

Total cost of revenue

2,841

1,125

482

522

-

4,970

Gross profit (loss)

$

20

$

528

$

(272

)

$

751

$

161

$

1,188

The following table summarizes the balances for the project sites for cryptocurrency mining revenue, data hosting revenue, high-performance computing service revenue, demand response revenue, cost of cryptocurrency mining revenue, exclusive of depreciation, cost of data hosting revenue, exclusive of depreciation, cost of high-performance computing services, and cost of depreciation during the three months ended June 30, 2024:

Soluna Digital

(Dollars in thousands)

Project

Dorothy

1B

Project

Dorothy

1A

Project

Sophie

Other

Total

Cryptocurrency mining revenue

$

4,484

$

-

$

-

$

-

$

4,484

Data hosting revenue

-

3,567

1,331

-

4,898

Demand response services

-

-

-

293

293

High-performance computing services

-

-

-

-

-

Total revenue

4,484

3,567

1,331

293

9,675

Cost of cryptocurrency mining, exclusive of depreciation

1,883

-

-

-

1,883

Cost of data hosting revenue, exclusive of depreciation

-

1,758

418

-

2,176

Cost of high-performance computing service revenue

-

-

-

-

-

Cost of cryptocurrency mining revenue- depreciation

1,065

-

-

-

1,065

Cost of data hosting revenue- depreciation

-

290

151

-

441

Total cost of revenue

2,948

2,048

569

-

5,565

Gross profit

$

1,536

$

1,519

$

762

$

293

$

4,110

The following table summarizes the balances for the project sites for cryptocurrency mining revenue, data hosting revenue, high-performance computing service revenue, demand response revenue, cost of cryptocurrency mining revenue, exclusive of depreciation, cost of data hosting revenue, exclusive of depreciation, cost of high-performance computing services, and cost of depreciation during the six months ended June 30, 2025:

Soluna Digital

Soluna

Cloud

(Dollars in thousands)

Project

Dorothy

1B

Project

Dorothy

1A

Project

Dorothy

2

Project

Sophie

Other

Soluna

Digital

Subtotal

Project

Ada

Total

Cryptocurrency mining revenue

$

5,860

$

-

$

-

$

-

$

-

$

5,860

$

-

$

5,860

Data hosting revenue

-

3,024

210

2,304

-

5,538

-

5,538

Demand response services

-

-

-

-

668

668

-

668

High-performance computing services

-

-

-

-

-

-

28

28

Total revenue

5,860

3,024

210

2,304

668

12,066

28

12,094

Cost of cryptocurrency mining, exclusive of depreciation

3,721

-

-

-

-

3,721

-

3,721

Cost of data hosting revenue, exclusive of depreciation

-

1,736

416

793

-

2,945

-

2,945

Cost of high-performance computing service revenue

-

-

-

-

-

-

7

7

Cost of cryptocurrency mining revenue- depreciation

2,147

-

-

-

-

2,147

-

2,147

Cost of data hosting revenue- depreciation

-

569

137

207

-

913

-

913

Total cost of revenue

5,868

2,305

553

1,000

-

9,726

7

9,733

Gross (loss) profit

$

(8

)

$

719

$

(343

)

$

1,304

$

668

$

2,340

$

21

$

2,361

The following table summarizes the balances for the project sites for cryptocurrency mining revenue, data hosting revenue, high-performance computing service revenue, demand response revenue, cost of cryptocurrency mining revenue, exclusive of depreciation, cost of data hosting revenue, exclusive of depreciation, cost of high-performance computing services, and cost of depreciation during the six months ended June 30, 2024:

Soluna Digital

Soluna

Cloud

(Dollars in thousands)

Project

Dorothy

1B

Project

Dorothy

1A

Project

Sophie

Other

Soluna

Digital

Subtotal

Project

Ada

Total

Cryptocurrency mining revenue

$

10,880

$

-

$

-

$

-

$

10,880

$

-

$

10,880

Data hosting revenue

-

7,108

3,068

-

10,176

-

10,176

Demand response services

-

-

-

1,168

1,168

-

1,168

High-performance computing services

-

-

-

-

-

-

-

Total revenue

10,880

7,108

3,068

1,168

22,224

-

22,224

Cost of cryptocurrency mining, exclusive of depreciation

$

3,724

-

-

-

3,724

-

3,724

Cost of data hosting revenue, exclusive of depreciation

-

3,495

931

1

4,427

-

4,427

Cost of high-performance computing service revenue

-

-

-

-

-

-

-

Cost of cryptocurrency mining revenue- depreciation

2,152

-

-

-

2,152

-

2,152

Cost of data hosting revenue- depreciation

-

575

302

-

877

-

877

Total cost of revenue

5,876

4,070

1,233

1

11,180

-

11,180

Gross profit

$

5,004

$

3,038

$

1,835

$

1,167

$

11,044

$

-

$

11,044

EBITDA and Adjusted EBITDA Tables:

Reconciliations of EBITDA and Adjusted EBITDA to net loss, the most comparable GAAP financial metric, for historical periods are presented in the table below:

(Dollars in thousands)

Three Months Ended

June 30,

Six Months Ended

June 30,

2025

2024

2025

2024

Net loss

$

(7,780

)

$

(9,145

)

$

(15,134

)

$

(11,689

)

Interest expense

1,196

449

2,034

873

Income tax benefit

(608

)

(649

)

(1,033

)

(1,197

)

Depreciation and amortization

3,989

3,909

7,868

7,834

EBITDA

(3,203

)

(5,436

)

(6,265

)

(4,179

)

Adjustments: Non-cash items

Stock-based compensation costs

1,942

1,368

3,789

2,029

Loss on sale of fixed assets

22

21

22

21

Provision for credit losses

-

244

-

244

Impairment on fixed assets

12

-

12

130

Fair value adjustment on SEPA draws

-

-

118

-

Loss (gain) on debt extinguishment and revaluation, net

-

5,600

(551

)

8,698

Adjusted EBITDA

$

(1,227

)

$

1,797

$

(2,875

)

$

6,943

The following table represents the Adjusted EBITDA activity between each three-month period from January 1, 2025 through June 30, 2025.

(Dollars in thousands)

Three months ended

March 31, 2025

Three months ended

June 30, 2025

Net loss from continuing operations

$

(7,354

)

$

(7,780

)

Interest expense, net

838

1,196

Income tax benefit from continuing operations

(425

)

(608

)

Depreciation and amortization

3,879

3,989

EBITDA

(3,062

)

(3,203

)

Adjustments: Non-cash items

Stock-based compensation costs

1,847

1,942

Loss on sale of fixed assets

-

22

Impairment on fixed assets

-

12

Fair value adjustment on SEPA draws

118

-

Gain on debt extinguishment and revaluation, net

(551

)

-

Adjusted EBITDA

$

(1,648

)

$

(1,227

)

The following table represents the Adjusted EBITDA activity between each three-month period from January 1, 2024 through December 31, 2024.

(Dollars in thousands)

Three

months

ended

March 31,

2024

Three

months

ended

June 30,

2024

Three

months

ended

September 30,

2024

Three

months

ended

December 31,

2024

Net loss from continuing operations

$

(2,544

)

$

(9,145

)

$

(8,093

)

$

(38,518

)

Interest expense, net

424

449

821

833

Income tax benefit from continuing operations

(548

)

(649

)

(547

)

(743

)

Depreciation and amortization

3,926

3,909

3,916

3,889

EBITDA

1,258

(5,436

)

(3,903

)

(34,539

)

Adjustments: Non-cash items

Stock-based compensation costs

661

1,368

1,257

2,025

Loss on sale of fixed assets

1

21

-

9

Provision for credit losses

-

244

367

149

Convertible note inducement expense

-

-

-

388

Placement agent release expense

-

-

-

1,000

Loss on contract

-

-

-

28,593

Impairment on fixed assets

130

-

-

-

Loss (gain) on debt extinguishment and revaluation, net

3,097

5,600

(1,203

)

(145

)

Adjusted EBITDA

$

5,147

$

1,797

$

(3,482

)

$

(2,520

)

View source version on businesswire.com: https://www.businesswire.com/news/home/20250815180089/en/

John Tunison
Chief Financial Officer
Soluna Holdings, Inc.
ir@soluna.io

Soluna Holdings Inc.

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