ERCOT North Hub day-ahead on-peak shot up $80 to around $255/MWh for Monday delivery on the Intercontinental Exchange, the highest value seen in several years. Looking back, day-ahead prices reached a summer high of $92/MWh in 2014, $145/MWh in 2013, $305/MWh in 2012 and $610/MWh in 2011, the hottest summer on record in Texas..

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