Data center electricity prices soar 60-fold! The largest power grid in the U.S. issues Level 2 emergency alert, with electricity prices in Northern Virginia exceeding $2,500/MWh.
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PJM Interconnection LLC, the largest grid operator in the United States, announced on Friday the initiation of a Level 2 Energy Emergency Alert. Under the triple pressures of prolonged high temperatures, widespread generator malfunctions, and severe transmission line overloads, the agency has upgraded its emergency response measures to prevent widespread power outages.
PJM has requested that all utility companies in its jurisdiction reduce power supply to users according to contractual agreements. Meanwhile, the U.S. Department of Energy issued a mandatory directive requiring all generators to operate at full capacity—this is the second time this summer the department has exercised this authority. PJM serves the Mid-Atlantic region, southern states, and Washington, D.C., providing electricity to a total population of 67 million.
In Northern Virginia, home to the world's largest data center cluster, spot wholesale electricity prices have surpassed $2,500 per megawatt-hour this week, compared to about $40 per megawatt-hour under normal PJM operations—62.5 times higher than usual.
Triple Pressure Forces Emergency Grid Response
PJM announced on its emergency procedures website the initiation of EEA2 (Level 2 Energy Emergency Alert), with the official reason being inability to meet expected energy demand.
The direct causes of this crisis include: widespread generator failures, severe overloads on high-voltage transmission lines, and persistent high temperatures in the Mid-Atlantic region leading to a surge in air conditioning electricity usage. Most areas in the region now have temperatures exceeding 100°F (about 38°C).
On the demand side, PJM reported that the instant peak load from 5 to 6 PM on July 2 was about 162.7 GW, close to the historic record of 165.563 GW set in August 2006. PJM added that preliminary official peak data will be released in 60 days, at which time actual performance of its 6 GW demand-response resources will be included in the comprehensive calculation.
Transmission Congestion Drives Up Prices, Data Center Cluster Hit First
The extreme surge in Northern Virginia spot electricity prices is mainly due to transmission congestion on high-voltage lines driving up interregional transmission costs. Both industry analysts and PJM operational data point to this factor.
The region is the world's largest data center cluster, highly sensitive to power stability and prices. Prices over $2,000 per megawatt-hour, compared to the normal benchmark of about $40, visually reflect the extreme supply-demand imbalance currently facing the grid.
Department of Energy Steps In Again, Exercises Mandatory Power for Second Time This Summer
The U.S. Department of Energy's mandatory operation directive requires all generators in the jurisdiction to operate at full capacity, aiming to maximize available generation capacity and relieve grid pressure. This is the second time this summer the department has taken such mandatory action, showing that the impact of extreme heat on the power system has exceeded the boundaries of conventional scheduling strategies.
PJM has now upgraded its response measures, requiring utility companies to proactively reduce demand by initiating pre-signed "demand response" contracts, actively reducing electricity use during emergencies to lower overall grid load and prevent uncontrolled outages.
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