Soluna Just Finished Its Biggest Bitcoin Site. The Bitcoin Was the Easy Part.

On September 8, Soluna Holdings said it energized the final 14 megawatts at Project Kati 1, its wind-powered bitcoin hosting site in Willacy County, Texas — completing the 83 MW first phase and lifting total operating capacity to roughly 206 MW. Headline reads like a bitcoin win, and the timing is flattering: bitcoin trades near $78,500 and the crypto fear/greed gauge sits at 69, squarely in greed.

But read the thing as the company that owns it, because the completion is a milestone in a different story.

Kati 1 is the keystone of Soluna's entire bitcoin platform. It's the south Texas half of a 166 MW campus that the company builds behind the meter of renewable generation, capturing power that wind farms would otherwise throw away. The first phase is a hosting site, not a mining site owned by Soluna: the company builds the sheds, the power, and the cooling, then rents them to miners. The two anchors are named and creditworthy — Galaxy Digital took 48 MW, and in late August Bitdeer signed a separate 28 MW hosting agreement. Because Soluna collects a fee for the space and power rather than betting its own machines on bitcoin's price, the hosting dollar is far less volatile than the mining dollar. That's the point of the model, and Kati 1 is the largest test of it yet.

So what did the completion actually accomplish? It closed the last bitcoin-facing build on the balance sheet. Soluna stepped into it having already converted nearly all of its proprietary mining into customer hosting, and the hosted sites consistently make better margins than the one mine it still runs. The completion means the income-producing floor of the company is now fully built and roughly 100% — as far as bitcoin infrastructure goes, the construction chapter is over and the harvesting chapter has begun.

Here is where the headline and the honestly-reported numbers split.

Capacity is not profit. In the second quarter, Soluna booked $15.1 million of revenue, up 145% year over year — but a chunk of that is pure accounting. The company began presenting pass-through electricity costs on a gross basis, adding $4.4 million to both revenue and cost; strip it out and growth was 73%. After those electricity costs, gross profit was just $766,000, a gross margin near 5%, down from 19% a year earlier. Kati 1 itself contributed its first gross profit of $82,000. The net loss widened to $22.6 million, hit by debt-extinguishment charges and the new depreciation stack from acquiring a 150 MW wind farm and consolidating its Dorothy sites.

And the machine that built all of it runs on new stock, not retained cash. Shares outstanding more than doubled in six months — from 102.5 million at the end of 2025 to about 225.8 million by June, and roughly 245 million by the time the filing landed — as Soluna raised $119 million in the first half, nearly all of it through an at-the-market equity program. Add the $23.6 million raised after quarter-end, and the direction of the capital structure is unmistakable.

That matters because the completion isn't the end of the build. It's the setup for the build that actually matters.

Soluna's stated ambition is to be an AI data center company, and its real bet sits next door to the site it just finished: Kati 2, a 350 MW AI/HPC campus being co-developed with Metrobloks, targeting 100 MW of critical IT load in a first phase. This is the part with uncapped upside. It's also the part with no committed funding. Management says large AI builds will be financed with project-level debt at 70% to 80% leverage, supported by equity partners — a financing structure that, as of last quarter's call, does not exist yet. If that debt can't be raised on acceptable terms, the cash to build comes from the same ATM that has been tripling the share count.

Which is the honest way to frame this "completion." The bitcoin site is done, it's real, and it gives Soluna an operating base and a recurring cash floor. But it answers the wrong question. The stock's whole remaining story — and the bulk of the 6.3 GW pipeline behind it — depends on whether the company can convert a renewable-power land bank into funded AI capacity, with 80% project debt that no one has signed and an insatiable appetite for equity in the meantime. The infrastructure is genuine; the financing is speculation.

The next milestone to watch is not another megawatt. It's a term sheet.