The PJM Board of Managers asked stakeholders for patience with the board’s ongoing investigation into the default of GreenHat Energy’s FTR portfolio.

Calpine and AEP are offering alternatives to plans for complying with FERC Order 842, which requires some generators to provide primary frequency response.

PJM debated stakeholders over whether existing units should be under the same obligation to provide primary frequency response that FERC ordered for new units.