by Harry Weber
August 17, 2015 — 1:12 PM EDT Updated on August 17, 2015 — 3:26 PM EDT
New York City’s first official heat wave since 2013 boosted power prices, as demand rose to the highest level in almost three weeks on the largest U.S. grid.
Use on the 13-state PJM Interconnection LLC network rose 18 percent to average 138,346 megawatts for the hour ended at 2 p.m. New York time from the same hour Aug. 14. That was the highest demand for that period since July 29, according to grid data compiled by Bloomberg.