New Mexico utility regulators have cleared procedural barriers in the proposed acquisition of PNM, but have not approved the takeover. Hearing examiners allowed PNM, parent TXNM Energy and Blackstone-controlled Troy ParentCo to refile an updated application, according to the Public Regulation Commission’s public update and Source NM.
The October 16 rulings also denied, without prejudice, a request for a separate investigation into TXNM’s 2025 stock sale to Zimmer Partners. The commission’s summary says examiners found Zimmer acted independently of Blackstone. That distinction allows the acquisition case to move forward without treating every investor’s stock purchase as part of the same transaction.
Source NM reported that New Energy Economy and the New Mexico Consumer Protection Alliance sought the Zimmer investigation after regulators ordered an earlier Blackstone-linked stock sale undone. Examiners said the present record did not contain comparable evidence connecting Zimmer’s purchase to the acquisition process. A denied investigation is not the same decision as approving the larger merger.
Why the earlier stock sale still matters
The commission’s July order found that a $400 million financing transaction involving Blackstone affiliates required advance regulatory authorization. It declared that transaction void and required a compliance report addressing how it would be unwound, replaced or otherwise corrected.
That order also required accounting for financing and transaction costs and barred their recovery from New Mexico ratepayers without express authorization in a future proceeding. It preserved review of whether the acquisition itself is lawful and consistent with the public interest. The July order required compliance verification at shareholder expense, adding another boundary between transaction cleanup costs and ordinary customer obligations. The latest procedural step therefore does not erase the earlier findings or substitute for a final merits decision.
Customer benefits remain proposed
PNM chief executive Don Tarry’s September testimony describes $220 million in proposed customer rate credits: $105 million over the first four years after closing, followed by $115 million over the next six. Those are proposed aggregate benefits over time, not an immediate $220 million payment to customers.
The testimony also offers $40 million over 10 years for workforce and economic development, $25 million for virtual-power-plant infrastructure subject to program approval, and $15 million over 10 years for the Good Neighbor Fund’s low-income bill assistance. Source NM’s reporting independently describes the same proposed package.
Tarry argues that Blackstone’s capital would help finance grid investment while PNM remains locally operated and regulated. His testimony acknowledges that PNM could remain in its current publicly traded structure, while contending that doing so would constrain investment. Those are the applicant’s arguments, not findings that the commission has accepted.
For customers, the practical distinction is between reopening the review and approving its promises. The commission’s update describes continued oversight and a revised filing reflecting corrective measures and material changes. Whether the takeover and its proposed protections satisfy that review remains a separate regulatory judgment.
