Highlights: September 2025

• Southern California (CAISO) saw its highest wholesale electricity prices over the past year, with prices ranging from $20MWh to $65/MWh during the month.

• Texas (ERCOT) continued to have elevated levels of daily peak demand during September 2025, continuing the trend observed throughout the summer.

• Texas (up 4.5%) and the Southeast (up 3.8%) saw significant increases in electricity generation compared to the previous year as both areas saw higher average temperatures this September compared to September 2024.

Key indicators