Explaining the Rise in Electric Bills in PA and Elsewhere in PJM

Electricity bills across Pennsylvania (and elsewhere in the PJM grid) are due to increase on June 1, when utilities reset a portion of their charges to reflect the current cost of energy. The increases reflect the rising cost of power on the regional transmission grid. Electric grids are complex to understand, but at their core, the grid manager (in this case, PJM) coordinates the flow of electricity within the grid and operates a wholesale power market where utilities purchase the electricity they deliver to their customers. Wholesale electric prices have spiked, and now utilities need to pass along those costs to ratepayers (don't be mad at the local utility). The question is, why have wholesale electric prices spiked? Is someone (is PJM) at fault?

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