US power spot contracts on the Intercontinental Exchange saw strong surges during Dec. 16 trading for Dec. 19 delivery as winter weather and near-freezing temperatures were forecast for parts of the PJM Interconnection. PJM West Hub day-ahead on-peak spiked about $41.75 on the day to trade about $119.25/MWh and its off-peak contract rose about $29.50 to $105/MWh.
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