Summer average wholesale electricity prices in western U.S. were highest since 2008
(Tue, 25 Sep 2018) As a result of record-high temperatures and fuel supply constraints this summer, wholesale electricity prices in the western United States reached their highest levels since 2008. In the area served by the California Independent System Operator (CAISO), peak-period electricity prices in July averaged $101 per megawatthour (MWh), the highest monthly average since the current day-ahead market began trading in April 2009.