The PJM Interconnection’s initial proposal for adding data centers to its system drew a range of concerns from the grid operator’s market monitor, independent power producers, utilities, data center companies and others, according to comments released on Aug. 29.

The issue centers on PJM’s fast-track stakeholder process to develop rules by the end of the year for interconnecting data centers to its system while ensuring the region has enough power supplies. PJM held a workshop on the issue on Tuesday and is set to hold the next meeting on Sept. 15.

In a first step in the Critical Issue Fast Path initiative, or CIFP, PJM staff on Aug. 18 released a conceptual proposal for tackling the issue. The proposal centers on treating new data centers over 50 MW as “non-capacity-backed load,” or NCBL. PJM would seek voluntary participation, but could require it if there is a capacity shortfall caused by large load additions.

Under the proposal, PJM could curtail power deliveries to data centers with NCBL status before the grid operator moves to pre-emergency load curtailments for other electricity users. In a benefit for NCBL data centers, they wouldn’t need to procure capacity in PJM’s capacity auctions.

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