PJM Interconnection, the operator of the largest U.S. electrical grid, has announced it will temporarily cut power to data centers and other large users during power shortages. The decision comes after an auction to add generating capacity failed, and the grid is struggling to meet the demand from the rapid expansion of data centers. The move is intended to prevent blackouts and ensure stability on the grid. The cuts will apply to data centers consuming 50 megawatts or more, and will not begin until June 2027. The grid operator is currently running another auction for new generating capacity, which is a common practice in demand response programs. These programs typically compensate customers who have their power cut, with advance notice ranging from 30 minutes to several days, depending on demand forecasts. This decision is expected to encourage data centers to invest in on-site power solutions or rely on backup generators, which are often more expensive and polluting. Many data centers currently use diesel generators due to their availability and ease of storage. Federal regulations allow such generators to be used for up to 50 hours per year for demand response events, and up to 100 hours per year if including emergencies and maintenance. The move has drawn criticism from environmental groups and regulators, particularly after Vantage Data Centers faced backlash for its apparent coordination with Virginia environmental regulators to question a report on the health impacts of diesel generators. PJM has also faced scrutiny for its management of new generating capacity and large users, including data centers. The grid operator’s territory covers 67 million customers, and wholesale electricity prices have nearly doubled over the past year, with data centers blamed for much of the increase. The situation highlights the growing tension between the expansion of data centers and the stability of the electrical grid.
PJM Interconnection has been under pressure to manage the increasing demand from data centers, which are projected to use four times more electricity by 2035 than they do today. The grid operator has been running auctions to secure new generating capacity, but these have not met the required targets. As a result, the decision to cut power to large users has been made to prevent potential blackouts. The compensation for affected customers is part of standard demand response programs, which have been in place for decades. The advance notice provided to customers varies depending on the forecasted demand, with some receiving warnings as short as 30 minutes. This approach is intended to balance the need for grid stability with the economic impact on large users. The decision is expected to push data centers to explore alternative power sources, including on-site generation, to avoid future cuts. This trend is likely to accelerate as the demand for data centers continues to grow.
PJM’s territory spans from Virginia to Illinois, covering 67 million customers. Over the past year, wholesale electricity prices have nearly doubled, and PJM’s independent market monitor has blamed data centers for much of the increase. The grid operator has faced criticism for its handling of new generating capacity and its approach to large users, including data centers. The recent decision to cut power to data centers during shortages is part of a broader effort to manage the rising demand and ensure grid stability. The situation reflects the challenges of balancing technological growth with infrastructure limitations, as the expansion of data centers continues to strain the electrical grid.
Source: techcrunch
