ComEd Implements New Transmission Security Agreements to Protect Customers

On January 6, 2026, ComEd, a subsidiary of Exelon Corporation, announced the introduction of new Transmission Security Agreements (TSAs) aimed at safeguarding existing customers and ensuring fair financial responsibilities for large load projects connecting to the grid. This strategic move is expected to mitigate the financial burden on current customers while accommodating the growing demand from new, large electricity users.

The newly signed TSAs will encompass commitments tied to transmission services requested by eight significant customers, collectively forecasted to add over 6.5 gigawatts (GW) of new load. The implementation of these agreements is projected to prevent existing ComEd customers from incurring over $2 billion in transmission charges over the next decade.

Under the terms of the TSAs, existing customers will be insulated from the costs associated with transmission services that should be borne by new large load projects. Should these projects not materialize as expected, the large load applicants are still obligated to cover any shortfall, thereby protecting existing customers from potential financial strain.

Gil Quiniones, President and CEO of ComEd, emphasized the significance of these agreements, stating, “These new transmission security agreements are a model for how utilities and the developers of large load projects – regardless of industry sector – can come together to meet growing power requests responsibly.” He highlighted the importance of ensuring that customers imposing significant demands on the system contribute fairly to its upkeep.

As part of the TSA framework, ComEd will mandate a firm financial commitment from developers aiming to establish projects with a capacity of 50 megawatts (MW) or more. This includes a "take or pay" agreement, which requires collateral to cover ten years of expected transmission service revenue based on the load requirements presented to ComEd.

Adrian Anderson, SVP Global Energy for Equinix, a key player in the data center sector, remarked on the importance of the initiative, noting, “Northern Illinois remains a key market for continued growth, which is why we’re proud to partner with ComEd on this initiative to bring greater transparency to the development process as we continue to drive growth and job creation across all our sites.”

The introduction of the TSAs represents a critical step in managing ComEd's pipeline of large load requests and minimizing speculative projects. This is crucial as future load projections will significantly impact energy supply costs in the wholesale power markets.

Last year, the regional grid operator PJM highlighted that demand growth, paired with constrained supply expansion, is a principal factor contributing to rising supply costs. While ComEd does not engage in generation or auction activities, these costs ultimately influence customer bills.

The new TSAs are part of ComEd's broader strategy to protect existing customers amid rising supply prices. The utility has expanded financial assistance options for its most vulnerable customers and is actively advocating for new generation resources to meet increasing demand.

In addition, ComEd has proposed modifications to its retail large load tariffs currently under review by the Illinois Commerce Commission (ICC). These proposed changes would necessitate higher initial application deposits and larger financial commitments from new customers who fail to meet their load requests or associated revenue requirements.

A decision from the ICC regarding the proposed tariff modifications is anticipated early this year, marking a significant milestone in ComEd's efforts to ensure fair pricing and reliable service for all its customers.

As ComEd advances its initiatives, the utility is positioning itself as a leader in responsible energy management and customer protection, reflecting its commitment to meeting the energy needs of northern Illinois while maintaining fairness and transparency in its financial practices.