Alcoa nears deal to sell idle New York smelter to Bitcoin miner NYDIG

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Updated 2 months ago

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Briefing

Alcoa is in advanced talks to sell its Massena East smelter in upstate New York to Stone Ridge-owned Bitcoin mining firm NYDIG, CEO Bill Oplinger told Bloomberg, with a deal expected to close in the middle of this year. The 1,300-acre facility, idle since 2014, draws hydropower from the New York Power Authority and already hosts NYDIG's mining operations through its Coinmint stake. The transaction is part of Alcoa's effort to divest 10 shuttered US smelter properties and extends a pattern of retired industrial sites being repurposed as digital infrastructure.

Alcoa sells its industrial past to a Bitcoin miner

Alcoa is close to selling its Massena East smelter in upstate New York to NYDIG, the Bitcoin financial services firm owned by asset manager Stone Ridge. CEO Bill Oplinger told Bloomberg that the deal "should be done in the middle part of this year," making it the most concrete transaction yet in Alcoa's campaign to offload 10 shuttered US smelter sites.

The Massena East facility, a 1,300-acre campus along the St. Lawrence River, has been inactive since 2014 when high energy costs and foreign competition made domestic aluminium smelting uneconomical. It draws hydropower from the New York Power Authority and carries 435 megawatts of grid capacity, attributes that make it significantly more attractive to digital infrastructure operators than greenfield sites that require years of permitting and grid interconnection approvals.

NYDIG consolidates an existing foothold

For NYDIG, the acquisition would convert a landlord relationship into ownership. In October 2024, the firm took a strategic stake in Coinmint, the colocation operator running Bitcoin mining hardware at Massena East under a 10-year lease with Alcoa signed in 2018. Following that investment, several Coinmint hosting clients including CleanSpark, Gryphon, and Bit Digital exited, freeing capacity for NYDIG to operate its own rigs. Mintvest Capital, a minority Coinmint shareholder, alleged in a lawsuit this year that NYDIG had effectively acquired Coinmint for roughly $200 million, a claim arising from Mintvest's assertion it was not fairly compensated.

NYDIG has been among the most active consolidators in Bitcoin mining since the 2022 bear market. In late 2024 it acquired Consensus Technology Group's approximately 120 MW of capacity across four US states, and in March 2025 it announced a definitive agreement to buy Crusoe Energy's Bitcoin mining business, which includes more than 270 MW of generation assets, as Crusoe pivoted toward AI infrastructure.

A contrarian bet on proof-of-work

NYDIG's continued commitment to Bitcoin mining sits at odds with the direction most publicly listed miners are taking. Riot Platforms, Core Scientific, TeraWulf, and IREN have all redirected power capacity toward AI and high-performance computing as post-halving mining economics tighten margins. BlackRock's recent $40 billion Aligned Data Centers acquisition valued power sites at roughly $8 million per megawatt, approximately 160% above typical public miner valuations, illustrating the premium the market is placing on compute-ready infrastructure.

The Massena deal follows a comparable transaction in February, when Century Aluminum sold its Hawesville, Kentucky smelter to TeraWulf for $200 million in cash plus a 6.8% minority equity stake in a redevelopment vehicle, with that site earmarked for high-performance computing and AI workloads rather than Bitcoin mining.

Neither Alcoa nor NYDIG has disclosed financial terms for the Massena East transaction. NYDIG did not respond to requests for comment from Bloomberg or The Block.

Analysis

NYDIG's vertical integration at Massena East, combining site ownership with operating capacity, creates a structurally lower cost base than publicly listed miners who lease at market rates. As post-halving margins compress, the cost gap between owned-infrastructure operators and lease-dependent public miners widens. WULF, MARA, RIOT, CORZ, and IREN face increasing difficulty competing for institutional hosting clients when a well-capitalized private counterparty holds permanent cost advantages at a 435 MW hydro-powered site.
The Massena East deal extends the idle aluminium smelter-to-digital infrastructure conversion pattern established by the Century Aluminum Hawesville-TeraWulf transaction. Alcoa holds nine additional shuttered US smelter sites. If NYDIG's acquisition closes at a credible valuation, it reprices the option value embedded in Alcoa's remaining idle industrial real estate, particularly sites with legacy grid interconnections and low-cost power agreements.
NYDIG's deliberate expansion into proof-of-work at scale, while listed peers pivot to AI and HPC, creates a divergence in how the 435 MW Massena capacity is valued versus comparable sites. BlackRock's Aligned Data Centers acquisition benchmarked AI-ready power at roughly $8 million per megawatt. A Bitcoin-dedicated site at the same location commands a meaningful discount to that, meaning NYDIG is acquiring optionality on a future HPC conversion at a lower entry cost than current market clearing prices for compute-ready power.

Connected Events

The Century Aluminum Hawesville sale to TeraWulf in February established the precedent for idle smelter conversions, with that site earmarked specifically for HPC and AI rather than Bitcoin. Massena East following a pure Bitcoin mining path under NYDIG creates a directly comparable transaction pair that will allow investors to benchmark relative valuations once terms are disclosed.

Markets · 2 months ago

Iran opens Strait of Hormuz to commercial traffic, triggering oil rout and crypto rally

Bitcoin reaching a two-month high above $77,000 following Hormuz reopening improved near-term mining economics at exactly the moment NYDIG is consolidating capacity, providing a favourable backdrop for NYDIG to present the Massena acquisition to Stone Ridge investors.

M&A · 2 months ago

Kraken parent Payward to buy CFTC-licensed derivatives exchange Bitnomial for $550 million

Kraken's acquisition of Bitnomial for CFTC derivatives licences and NYDIG's accumulation of physical mining infrastructure represent simultaneous vertical integration moves by two of Bitcoin's largest institutional-grade private operators, compressing the strategic differentiation available to publicly listed crypto companies in both the exchange and mining segments.

Alcoa sells its industrial past to a Bitcoin miner

NYDIG consolidates an existing foothold

A contrarian bet on proof-of-work

Analysis

Connected Events

Iran opens Strait of Hormuz to commercial traffic, triggering oil rout and crypto rally

Kraken parent Payward to buy CFTC-licensed derivatives exchange Bitnomial for $550 million

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Alcoa nears deal to sell idle New York smelter to Bitcoin miner NYDIG