CAISO locational marginal price at ELAP_BPAT-APND, trade dates 2024-01-10 to 2024-01-19

LMP per CAISO trade date, over the intervals starting between the date's start and end (Pacific midnights in UTC; 23, 24 or 25 hours): min and max are published interval prices; the mean is derived, the arithmetic mean over the date's intervals with a value. OASIS's own date label (OPR_DT) is checked against these bounds; intervals_labelled_otherwise counts any it places on another date.

CAISO publishes the total (LMP) and its components (energy MCE, congestion MCC, loss MCL, and greenhouse-gas MGHG where the report carries it). Each interval's components are summed and compared with the total to 0.01 USD/MWh; an interval that does not reconcile is listed under components_off and its values are left exactly as published.

Neither report carries an advisory or settlement flag; each publishes one set of prices per interval. PRC_LMP (DAM) is the day-ahead market's hourly price and PRC_INTVL_LMP (RTM) the real-time dispatch's five-minute price; the fifteen-minute market price (PRC_RTPD_LMP) is a third series, not loaded. Which real-time series settles which quantity is CAISO's settlement rule and is not restated here. BPA is a Western EIM participant and not an EDAM participant (EDAM began 2026-05-01 with PacifiCorp), so on these dates it did not settle energy in CAISO's day-ahead market: the day-ahead series is CAISO's price at the node, not a price BPA paid. The research note treats pre-EDAM day-ahead rows at WEIM-only nodes as advisory until CAISO's own definition is found; no CAISO notice defining them has been located.

CAISO replaces invalid prices in place after publication and lists corrections on OASIS under ATLAS REFERENCE > Messages; these values are what OASIS served at the retrieval time recorded under evidence.inputs.

The window is the half-open UTC interval [start, end) holding whole CAISO trade dates, each midnight to midnight Pacific prevailing time. OASIS stamps each interval at its start (INTERVALSTARTTIME_GMT) with its end beside it; every series aligns to the intervals array, and each trade date's intervals are those starting inside its own UTC bounds. node x market run x interval (hourly DAM, 5-minute RTM) x LMP component; INTERVALSTARTTIME_GMT / INTERVALENDTIME_GMT are half-open UTC, OPR_DT / OPR_HR the Pacific trade date and hour-ending 1-24.

• price_interval; source_ref=caiso-oasis-lmp; node=ELAP_BPAT-APND; market in (DAM, RTM); 2024-01-10T08:00:00Z <= interval_start_utc < 2024-01-20T08:00:00Ztables/price_interval.parquet
  OASIS query ↗retrieved 2026-09-27 19:11:55 UTC
• price_interval; source_ref=caiso-oasis-lmp; node=ELAP_BPAT-APND; market in (DAM, RTM); 2024-01-10T08:00:00Z <= interval_start_utc < 2024-01-20T08:00:00Ztables/price_interval.parquet
  OASIS query ↗retrieved 2026-09-27 19:12:17 UTC

Source: California ISO, OASIS. The contents of these pages are subject to change without notice. Decisions based on information contained within the California ISO's web site are the visitor's sole responsibility. Terms of use ↗ · OASIS interface specification ↗ · Source record. Checks: prices.intervals_complete passed · prices.components_sum_to_total passed · keys.price_interval_unique passed · prices.rows_valid passed.