The Federal Energy Regulatory Commission on Tuesday rejected Commonwealth Edison’s “notice of cancellation” of a transmission security agreement, or TSA, for a 1.8-GW, $20-billion data center that PowerHouse Hillwood Holding is developing in Joliet, Illinois. The decision matters because it leaves the contract dispute to the courts while exposing a striking gap between the scale of the project and the security posted to support it. At the center of the dispute is whether PowerHouse Hillwood met the agreement’s initial credit requirements via a $1 posting, according to FERC’s decision. That figure drew direct criticism from FERC Commissioner David LaCerte, who said treating the project’s risk as collateralizable for “less than the price of a cup of coffee” trivializes the obligations the guarantee is meant to secure.

The material facts are narrow but consequential. The TSA covers a 1.8-GW data center with a stated development cost of $20 billion. PowerHouse Hillwood contends it satisfied the agreement’s initial credit requirements through a $1 posting. ComEd moved to cancel the TSA, and FERC declined to take jurisdiction over the dispute, saying the courts can work it out just as well as the federal agency. The dispute is pending in the U.S. District Court for the Northern District of Illinois, according to the decision. FERC’s action is therefore not a ruling on the merits of the credit support question, but a procedural decision that leaves the contract interpretation to litigation.

The evidence comes from a single Utility Dive report read in full, which quotes FERC’s decision and the commissioners’ statements. Chairman Laura Swett and Commissioner Lindsay See said in a joint concurrence that although the agency declined to assert primary jurisdiction over ambiguous contract terms involving credit support, its commitment to fair cost allocation, ratepayer protection, and regulatory clarity remains unwavering. Commissioner David Rosner tied the dispute to FERC’s June show cause orders directing regional transmission organizations and independent system operators to develop pro forma cost-recovery agreements for large loads. Rosner said requiring security deposits helps ensure project viability and transparency, and that cost-recovery agreements matter because they enable efficient and accurate planning and ensure project risks stay with the developer, not the public.

The sector implications are significant for large load interconnection. FERC’s decision highlights the criticality of potential reforms proposed in the show cause orders, to which RTOs and ISOs have until mid-November to respond. Swett and See said developing clear and consistent terms for connecting large loads with the transmission system is crucial, and that it is more important than ever that RTOs, ISOs, and transmission owners may propose pro forma cost recovery agreements containing strong, consistent language that protects customers from improper cost shifting while providing certainty to contracting parties. The $1 posting, if accepted as compliant, would represent a minimal financial commitment relative to a $20 billion project, raising questions about whether current credit support language is adequate for hyperscale load additions.

The limitations of this analysis are clear. The dossier contains one secondary source read in full, and the underlying FERC decision is not directly quoted beyond the excerpts provided. The report does not specify the full terms of the TSA, the duration of the credit support obligation, or the exact language ComEd and PowerHouse Hillwood are disputing. It also does not state whether the $1 posting was an initial placeholder or intended as ongoing security. What to watch next is whether the Northern District of Illinois court interprets the credit support language, and whether FERC’s show cause process produces pro forma agreements that make $1 postings impossible for projects of this scale.