Warmer-than-normal temperatures across Texas drove the hourly, day-ahead wholesale electricity prices between 5:00 p.m. and 6:00 p.m. on April 26 and 27 above $500 per megawatthour (MWh) in ERCOT, the electric system operator for most of Texas.

Very high prices for just part of an upcoming day, especially during “super peaks”, can yield high average prices for the entire on-peak period.

Read the full article at The Financial.