PJM Interconnection
Every DataCenterFeed story on PJM Interconnection — across projects, zoning, power and grid, deals, policy, and cooling, newest first.
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Power & Grid
Amazon Signs 20-Year, 690-MW Deal With Constellation at Maryland's Calvert Cliffs Nuclear Plant
Constellation and Amazon announced on Sept. 30, 2026, a 20-year PPA for 690 MW from Calvert Cliffs in Lusby, Md., including about 190 MW of new uprate capacity expected online between 2030 and 2032, which Constellation says gives it the revenue certainty to relicense the plant for another 20 years.
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Power & Grid
PJM Accepts First Expedited Interconnection Track Projects: ENGIE Batteries in Pa. and Ohio, LS Power Gas Uprate
PJM accepted three projects totaling more than 2,100 MW of nameplate capacity into its temporary Expedited Interconnection Track: two ENGIE battery projects in Pennsylvania and Ohio and a 455-MW gas uprate at Hunterstown that Utility Dive attributes to LS Power. All three are slated to come online in mid-2029.
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Power & Grid
PJM Calls Demand Response in October Heat; DOE Order Let It Shift Data Centers to Backup Power
PJM issued a Maximum Generation Alert for Oct. 13–14, 2026, called demand response and recalled maintenance outages. It said a DOE order for Oct. 13–16 authorized it to direct data centers to switch to backup generation, which it had not had to use, and it then issued a Capacity Advisory for Oct. 19.
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Power & Grid
FERC Rejects Core of PJM's Large-Load Plan, Keeps Only 50-MW Definition and Registry
FERC on Oct. 9, 2026 accepted PJM's 50 MW Large Load definition and a Large Load Registry but rejected the IRAS curtailment service, BYONC rules and a VRR-curve exclusion, citing state jurisdiction and an insufficient just-and-reasonable showing.
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Power & Grid
FERC Suspends PJM's 6.8-GW Reliability Backstop Procurement as DOE Presses for Large-Load Cost Protections
FERC accepted but suspended PJM's one-time Reliability Backstop Procurement until Feb. 28, 2027, and opened a hearing on cost allocation. DOE has since urged PJM to make large loads, not households, pay. PJM plans a revised filing by Oct. 29.
