This zip file contains 3 files:
ucap_derations_due_to_ambient_temperatures_2000-2024.csv
ucap_weather_shapes_2000-2024.csv
ucap_weather_station_assignments_2000-2024_thermal_derate_2026update_20260512.csv

The first file contains hourly derating profiles for thermal units that modify output due to ambient temperatures. Weather years are 2000-2024 and the profiles are unit-specific based on public historical outage (curtailment) of thermal units data from the CAISO. Profiles are normalized to values between 0 and 100 with the value indicating the percentage of output derating in that hour. A value of 90 means the unit output is derated by 10% in that hour.

The second file maps SERVM weather station names to the corresponding 2000-2024 hourly derating profiles based on weather year.

The third file maps SERVM unit names to weather station.
