The ZEMA graph above shows day-ahead peak electricity prices between August 09 – September 28, as reported by ICE. The red line represents CAISO SP15, the green line represents PJM APS Zone, the purple line represents ERCOT North 345KV, and the blue line represents NYISO Zone A. Units are in USD/MWh.
Data Sources: ICE | Effective Date: September 30, 2015