Micron Expansion Could Be Bolstered by New York 345 kV Underground Line to Onondaga Megafab, Regulators Say

Published: October 17, 2025 — Updated: October 17, 2025 — Author: COINOTAG

• 345-kilovolt, two-mile underground line approved to power Micron’s Onondaga megafab.

• Project includes Clay substation expansion and new equipment for initial construction phase.

• Micron’s facility is tied to a $100 billion investment and projected to create more than 50,000 jobs over two decades.

Micron Onondaga power line approval: PSC greenlights 345-kV underground link for Micron’s $100B megafab—read the latest details and expected economic impact. Learn more.

What is the Micron Onondaga power line approval?

The Micron Onondaga power line approval is the New York Public Service Commission’s authorization to build a 345-kilovolt underground transmission line connecting the Clay substation to Micron Technology’s planned $100 billion semiconductor megafab in Onondaga County. The decision clears environmental and construction plans for the project’s first phase.

How will the 345-kilovolt line support Micron’s $100 billion megafab?

The two-mile, 345-kV underground line is designed to supply the large, continuous electricity demand of advanced semiconductor fabrication. The approval includes expanding the Clay substation and installing new switchgear and transmission equipment. According to Reuters and statements from Governor Kathy Hochul, the infrastructure is intended to provide reliable power for thousands of high-demand manufacturing processes and cleanroom operations that are typical in modern fabs.

Official figures tied to the project indicate it supports a facility projected to generate more than 50,000 jobs over 20 years, with about 9,000 direct roles within Micron. The PSC review covered both environmental permits and construction sequencing to minimize local disruption during the initial phase.

Frequently Asked Questions

When was the PSC approval announced and who announced it?

The approval was announced on October 17, 2025 by Governor Kathy Hochul, with details reported by Reuters. The PSC approved the transmission link and associated substation upgrades as part of the state’s support for the Micron investment.

Will this affect Micron’s operations in China or its global market position?

Micron is simultaneously reshaping its global supply decisions: the company halted shipments of certain data center chips into mainland China after restrictions in 2023, while maintaining other business lines there. Micron continues local packaging investments in Xi’an and sells to select Chinese customers via data centers outside mainland China. These operational moves reflect trade and regulatory factors rather than the Onondaga project itself.

Key Takeaways

• Regulatory green light: New York PSC approved the 345-kV underground line and first-phase construction plans, enabling the Clay substation expansion.
• Economic scale: The megafab ties to a projected $100 billion investment and more than 50,000 jobs over two decades, including ~9,000 Micron positions.
• Strategic context: The approval advances U.S. semiconductor capacity goals while Micron adjusts its China market footprint amid trade restrictions and local competition.

Micron, local leaders and expert comments

Governor Kathy Hochul described the approval as a transformational step for Central New York and said the state is “moving quickly ahead with all due speed and deliberation.” Micron issued a company statement noting the data center division “had been impacted by the ban” in mainland China and reiterated compliance with local regulations where it operates. Independent industry observers cite broader U.S. efforts to rebuild domestic chip manufacturing capacity as the policy backdrop.

Additional context and data

Background reporting by Reuters and public statements around this project place it within a 2022 agreement that selected Onondaga County as the site for Micron’s advanced chip factory. The plant aligns with national targets to increase domestic semiconductor production, including a stated goal to produce roughly one in four U.S.-made semiconductors by 2030. Separately, Reuters reported that China’s AI data center market surged to 24.7 billion yuan (about $3.4 billion) in 2024, which benefited regional competitors.

Conclusion

The New York PSC’s approval of the 345-kilovolt underground line is a critical infrastructure milestone that enables Micron’s planned $100 billion Onondaga megafab while reinforcing state and national semiconductor strategies. With clear regulatory sign-off, projected job creation, and careful environmental planning, the project advances both local economic development and broader efforts to secure domestic chip-making capacity. For continuing coverage and updates, follow COINOTAG reporting and official PSC announcements.