Why It Matters
New Mexico’s largest utility will undo an unapproved stock sale and delay its acquisition by a Blackstone affiliate to mid-2027, following a state regulator’s order. The move underscores the power of utility commissions to enforce regulatory requirements even as major deals advance through the approval process.
What Happened
Public Service Company of New Mexico (PNM) and a Blackstone-affiliated buyer have agreed to unwind a $400 million stock purchase that the New Mexico Public Regulatory Commission ruled violated state law. The transaction, which occurred without advance PRC approval, will be reversed through a loan that PNM secured to buy back the shares from Blackstone. PNM will then resell those shares to repay the loan.
The PRC, rather than dismissing the broader acquisition application, permitted the parties to continue seeking approval. The new timeline for deal closure is May 31, 2027—a year later than originally expected when PNM shareholders approved the sale in August 2025.
Multiple federal and state regulators have already signed off on the transaction. The Public Utility Commission of Texas, the Federal Energy Regulatory Commission, and the Federal Communications Commission have granted approval. New Mexico PRC clearance remains the final hurdle.
By the Numbers
$400 million — the stock purchase amount Blackstone paid without PRC pre-approval; the amount PNM must buy back
August 2025 — date PNM shareholders approved the acquisition
May 31, 2027 — new deadline for deal closure under extended timeline
Zoom Out
Large utility acquisitions involving out-of-state or private-equity buyers routinely face state-level regulatory scrutiny over rate impacts and corporate control. The PNM case illustrates how commissions can enforce procedural rules—requiring pre-approval before major transactions—while still allowing deals to move forward if underlying merits satisfy regulators. Similar infrastructure and environmental review processes have shaped other major development proposals in New Mexico in recent years.
Blackstone’s interest in the nation’s largest utility company reflects broader private-equity attention to regulated infrastructure assets, particularly as energy transition investments reshape utility portfolios.
What’s Next
PNM and Blackstone will work toward New Mexico PRC approval over the next year. The Santa Fe-based advocacy group New Energy Economy, which opposed the merger, noted that while the stock reversal demonstrated legal violations, it argued the commission should have denied the acquisition outright rather than allowing it to proceed. The extended timeline provides the PRC additional months to complete its review and determine whether to authorize the acquisition.