Northwest Power Jumps to Seasonal Record as Water Flows Drop

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U.S. Northwest wholesale power prices rose to record seasonal highs as a wave of heat boosted demand while low water levels limit hydroelectric generation.

A warming trend in the region will push temperatures near record levels for the time of year heading into the weekend, said WSI Corp., a weather services company. The water runoff at The Dalles Dam on the Columbia River in Oregon, the benchmark for the Northwest, will be 33 percent below normal from April through September, the Northwest River Forecast Center said in a report Tuesday.