Chart: SP15 DAM vs RT LMP#
Day-Ahead Hourly LMP (step) against real-time 15-minute LMP at the SP15 hub.
Chart#
Sources: CAISO OASIS (PRC_RTPD_LMP)
Description#
The two price legs of the DART spread at the SP15 trading hub, overlaid on one axis. The day-ahead LMP is drawn as an hourly step (one auction price per hour); the real-time 15-minute LMP is drawn as a line. The vertical distance between them in any hour is the raw material of the DART spread - the real-time series is visibly spikier because it absorbs forecast errors, outages, and weather surprises as they happen.
Formulas Used: N/A - the chart shows the two raw price legs; the derived spread is on the DART chart.
Data Cleaning Information: N/A - LMPs are used as published.
Notes#
Times are UTC.
Either series can be toggled via the legend.
Chart Specs#
Chart Name |
SP15 DAM vs RT LMP |
|---|---|
Chart ID |
caiso_dam_vs_rt_sp15 |
Topic Tags |
Lmp, Day-Ahead, Real-Time |
Data Series Start Date |
|
Data Frequency |
Hourly / 15-min |
Observation Period |
|
Lag in Data Release |
|
Data Release Timing |
|
Seasonal Adjustment |
|
Units |
$/MWh |
HTML Chart |
Dataframe Manifest#
Dataframe Name |
CAISO LMP Real-Time 15-Min |
|---|---|
Dataframe ID |
|
Data Sources |
CAISO OASIS (PRC_RTPD_LMP) |
Data Providers |
CAISO |
Links to Providers |
|
Topic Tags |
Lmp, Real-Time, Spreads |
Type of Data Access |
|
How is data pulled? |
src/pulls/pull_caiso_lmp_real_time_15_min.py via the open-source gridstatus library |
Data available up to (min) |
|
Data available up to (max) |
|
Dataframe Path |
data\opensource\caiso_lmp_real_time_15_min.parquet |
Linked Charts:
Pipeline Manifest#
Pipeline Name |
Project-Lab-Energy-Weather-Natgas-Quanto-CAISO |
|---|---|
Pipeline ID |
|
Lead Pipeline Developer |
Brian Nguyen |
Contributors |
Brian Nguyen, Claire Kim |
Git Repo URL |
|
Pipeline Web Page |
|
Date of Last Code Update |
2026-08-27 10:08:05 |
OS Compatibility |
Windows, Linux, macOS |
Linked Dataframes |
CAISO:caiso_lmp_day_ahead_hourly |
Build Commands:
doit