The solution to the Artificial Island transmission stability problem may be more costly than originally estimated, PJM officials said last week.

The review of proposed solutions to the Artificial Island transmission stability problem is taking PJM longer than expected and the selection of the winner could be months away.

As expected, PJM transmission planners said last week they will recommend the PJM Board of Managers approve FirstEnergy’s proposed $8 million congestion-relief upgrade in the MetEd zone.

PJM will approve only one of 17 congestion relief proposals submitted in September, saying most failed to provide sufficient benefits or targeted problems that were already addressed.

PJM planners expect to recommend construction of a $1.2 billion double circuit 345 kV line to address a short circuit problem in the PSEG zone.

AP South and the Cleveland Interface attracted the most attention in PJM’s inaugural window for proposed congestion relief upgrades.

The Planning and Transmission Expansion Advisory committees will swap their meeting dates with the Market Implementation Committee in December.

Six sponsors submitted proposals to relieve 15 congested facilities in the “market efficiency” window that closed Sept. 26, officials told the Transmission Expansion Advisory Committee.

PJM has narrowed the list of favored solutions to the Artificial Island stability problems, officials told the Transmission Expansion Advisory Committee.

The PJM Board of Managers last week approved $1.2 billion in transmission reliability projects.