Jackson Walker played a significant role in a definitive defense victory in the Winter Storm Uri multidistrict litigation (MDL), one of the largest and most complex mass‑tort proceedings ever brought in Texas. On March 27, 2026, the Texas Supreme Court denied all mandamus petitions challenging the First Court of Appeals’ conclusive decision, in which Jackson Walker also was instrumental, ordering dismissal of all remaining claims against the hundreds of power generators in the Winter Storm Uri MDL.
The ruling brings the power generator cases to a close and represents a major step toward the resolution of the broader MDL, which encompasses over 200 lawsuits with more than 30,000 individual plaintiffs, two putative class actions, and over 1,500 insurance companies bringing subrogation claims for over 250,000 policyholders against more than 500 defendants, including nearly all power generators, almost every natural gas pipeline or producer operating in Texas, and other key participants in the Texas power market. All told, these personal injury and property damage plaintiffs sought more than a billion dollars in damages caused by Winter Storm Uri in Texas.
From the outset, Jackson Walker has been central in the joint defense effort, helping to establish the MDL and then develop and execute a cohesive, uniform strategy among competitors – both clients and law firms – working together at unprecedented scale. The defense successfully obtained stays of the cases, limited proceedings to pre‑discovery bellwether motions, avoided costly discovery, maintained solidarity across defendants and industry groups, and secured dismissal of key claims, culminating in this decisive appellate victory.
Jackson Walker represented multiple power generator defendants in the MDL, including Constellation Energy, Olin Corporation, CPS Energy, and the City of Austin (Austin Energy).
“This result is the product of extraordinary teamwork and trust across a remarkable joint defense group with nearly every major law firm and some of the most accomplished lawyers in Texas,” said Jackson Walker partner Tré Fischer, who served as liaison counsel for the hundreds of defendants in the MDL. “Competing firms and companies came together to develop and implement a uniform strategy, and that collaboration ultimately proved successful. This is a tremendous outcome and a significant milestone toward completing this MDL.”
Several Jackson Walker attorneys played leadership roles in the case. In addition to Tré Fischer (lead counsel for Constellation Energy and others), the Jackson Walker team was led by Julia Mann (lead counsel for CPS Energy), Breck Harrison and Noah Galton (lead counsel for Austin Energy), and Meghan Griffiths (lead counsel for Olin Corporation).
This victory follows similar, earlier victories for Jackson Walker’s natural gas and retail electric provider clients, also led by partner Tré Fischer as liaison counsel.
For more information about this victory, see news coverage by Law360, The Texas Lawbook, Texas Tribune, and Texas Lawyer.
Meet Jackson Walker
Founded in 1887, Jackson Walker is the largest firm in Texas with over 500 attorneys across six offices, 30% of whom practice litigation. Our firm has garnered significant accolades, including as an Intimidating Opponent in BTI Consulting Group’s list of the firms “Most Feared in Litigation,” as a top Texas firm in the area of Litigation: General Commercial in the recently released Chambers USA Guide, and among the Best Law Firms® by Best Lawyers with 27 national and 142 metropolitan rankings in the 2026 edition. To explore the firm’s experience, visit the Trial & Appellate Litigation practice page.
