US aluminum giant Alcoa is in advanced talks to sell its dormant Massena East smelter in upstate New York to New York Digital Investment Group (NYDIG). The deal has not been signed, but CEO Bill Oplinger told Bloomberg the transaction should close "in the middle part of this year." The smelter has been idle since 2014, when Alcoa shut it down after rising energy costs and cheap Asian aluminum imports made it unviable. NYDIG plans to convert the site into a Bitcoin mining operation.
Why an old smelter beats an empty lot
Aluminum smelters are built for continuous 24/7 heavy loads. Massena East already has pre-installed substations, transmission lines and high-capacity grid connections. For a Bitcoin miner, replicating that infrastructure from scratch means years of permitting, approvals and construction. Whoever bought a ready site saved all that time.
Massena East is not a one-off case. Earlier this year, Century Aluminum sold its Hawesville smelter in Kentucky to TeraWulf for $200 million. TeraWulf immediately dropped plans to restart aluminum production and announced conversion of the site into a high-performance computing and AI data center. TeraWulf shares have gained 80% year-to-date.
NYDIG and Massena: an existing connection
NYDIG is not arriving at this campus for the first time. The company, a subsidiary of Stone Ridge, already holds a stake in Coinmint, a mining operator running hardware at the same Massena campus under a long-term lease. Last year, NYDIG acquired the Bitcoin mining business of Crusoe Energy, including its digital flare mitigation operations. Buying the Alcoa plant itself completes the picture: the tenant becomes the owner.
That kind of vertical move is unusual in the industry. Most miners rent or buy smaller facilities. NYDIG is playing for the long run.
The sector pivots to AI - NYDIG does not
A large share of the mining sector is now pivoting toward AI infrastructure. MARA Holdings bought a 64% stake in French company Exaion to enter the AI services market. Hive, Hut 8, TeraWulf and Iren are all converting mining farms into data centers. CoreWeave went further still, dropping Bitcoin entirely and positioning itself as a cloud AI platform.
Against this backdrop, NYDIG looks like a contrarian bet. The firm is adding Bitcoin mining capacity rather than walking away from it. No public statement from the company has explained the rationale.
How large miners move mined BTC
Industrial-scale Bitcoin miners rarely dump coins directly into the exchange order book. They typically sell through OTC desks or large platforms like Binance to avoid moving the market with heavy volume. NYDIG has a well-established reputation among institutional players as a reliable OTC counterparty.
At Bitcoin's current price around $75,700, mining at Massena East's hydro rates is profitable. Operators running on cheap hydroelectric power carry costs well below the industry average, even during price downturns.
Industrial relics are becoming digital infrastructure
The US is in a new race for old industrial assets. Shuttered aluminum smelters, steel mills and chemical plants share one key feature: powerful grid connections paid off over decades of prior production. Getting comparable power for a brand-new site under American permitting rules takes years. Those who moved early hold an advantage several cycles deep.
If the deal between Alcoa and NYDIG closes on schedule, Massena East will come back to life for the first time in 12 years. No aluminum this time. Bitcoin instead. The industrial-to-digital conversion trend is moving fast, and the list of converted sites is far from done.
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