Meeting growing electricity demand will require building new electricity generators. This investment is also important for ensuring national security, maintaining grid reliability, and achieving climate goals. One of the largest hurdles to building new generators is connecting to the power grid. This interconnection process takes several years and can also be costly since connecting generators may need to pay to upgrade the transmission infrastructure. 

This website makes public historical data on the interconnection queue. We extract these data from engineering studies issued as part of the interconnection process. Our first release is data for PJM, a regional transmission operator (RTO) serving the Mid-Atlantic region. These data cover all requests for interconnection made to PJM from 2008-2020. We will later release interconnection queue data for SPP, a RTO serving the central US.

This effort is supported by NSF Award 2215063, the University of Maryland Grand Challenges Grant, the University of Maryland Department of Economics, and Resources for the Future.