PJM's $12 billion modeling error reveals grid operator accountability gap

PJM Interconnection, which manages electricity for 65 million Americans, made a forecasting mistake that cost ratepayers $12 billion in unnecessary costs. The operator is now proposing to repeat the same methodological error. Regional grid operators operate with minimal external scrutiny, passing massive costs to consumers while facing no meaningful penalty or leadership change. PJM can defend its approach despite the documented damage, which suggests that grid governance structures lack mechanisms to hold operators accountable when their models fail at scale.