Alcoa sells massena east to NYDIG, transforming former smelter into bitcoin mine

Alcoa sells Massena East. The aluminum smelter, closed since 2014 in northern New York, is now in the hands of NYDIG. The bitcoin mining company plans to transform the industrial site into a crypto infrastructure.

The smelter spans 1,300 acres along the St. Lawrence River. Alcoa shut it down twelve years ago, but the electrical infrastructure still stands. The network, designed for nonstop industrial production, remains connected. NYDIG sees this as a golden opportunity: no need to rebuild energy connections, just plug in the mining machines.

Massena Already on the Crypto Radar

NYDIG is familiar with the campus. The company holds a stake in Coinmint, which has already been running mining equipment on site. Coinmint has been leasing electrical capacity for several years, benefiting from access to the New York Power Authority. The region’s hydroelectric system provides stable and relatively cheap energy, a rare advantage for bitcoin mining where electricity accounts for the majority of costs.

Stone Ridge, NYDIG’s parent company, has been ramping up investments in mining infrastructure across the United States in recent months. North Dakota, South Dakota, Pennsylvania, Missouri: NYDIG is acquiring energy-related assets in several states. The strategy? Control the electricity source to reduce reliance on external suppliers and secure margins.

Massena East represents a different case. Not just an energy supply agreement, but full ownership of the land and electrical systems. Alcoa and NYDIG are still discussing the exact structure of the transfer. Both parties aim to finalize the transaction by mid-2026, but it depends on final agreements and regulatory processes.

Alcoa Offloads Ten Inactive Sites

Massena East is part of a broader program. Alcoa has identified ten inactive American sites for sale. The company wants to focus on higher-margin operations and reduce exposure to costly legacy facilities. Massena East is the most advanced case in this divestment program.

And it makes sense. Keeping an inactive smelter is expensive: minimal maintenance, property taxes, security. Selling to NYDIG allows for cash recovery and transfers site responsibility. For NYDIG, it’s the opposite: a ready-to-use asset with industrial zoning already in place.

Bitcoin mining needs space and electricity. Lots of electricity. Former industrial sites tick these two boxes. Massena East offers 1,300 acres and network connections capable of supporting heavy loads. No need to negotiate with municipalities for zoning or build power lines. Everything is already in place.

Miners are looking for such sites across the United States. Texas, Kentucky, Montana: old factories, power plants, and smelters are being converted into mining farms. The transition is often faster and cheaper than starting from scratch.

Coinmint Already on Site

Coinmint has been operating in Massena for several years with a leasing structure tied to energy capacity. NYDIG holds a stake in Coinmint, which facilitates the transfer. No abrupt change in operator, just a consolidation of ownership.

This continuity matters. Mining operations don’t stop easily: every hour of downtime represents lost revenue. If NYDIG takes direct control of the site, Coinmint can continue running without interruption during the transition.

Access to hydroelectric power remains the main asset. The New York Power Authority provides stable energy, less prone to price fluctuations than natural gas or coal. For bitcoin mining, where margins fluctuate with the coin price and network difficulty, securing a predictable energy source makes the difference between profit and loss.

Massena East could become a major hub for NYDIG. The site offers space to install thousands of machines, and the electrical infrastructure can support future expansion. If the transaction goes through, it marks one of the largest transfers of industrial infrastructure to crypto mining in the United States.

The sale is not yet finalized. Alcoa and NYDIG still need to finalize the details and go through regulatory approvals. But both parties seem motivated: Alcoa wants to offload a non-strategic asset, NYDIG wants to expand its mining capacity. Mid-2026 as the target date, if all goes well.

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