Section 3 Market Performance Metrics
Day-Ahead Prices
Figure 3.1 shows the daily simple average prices for all hours in IFM for each of the four default load-aggregation points (DLAP): PG&E, SCE, SDG&E, and VEA.
Day-Ahead DLAP prices on average decreased this month compared to the previous month.
TABLE 3.1 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 3.1: IFM (Day-Ahead) Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| PGAE | March 4 | TESLA-LOSBANOS-500kV |
| SDGE | March 5 | DEVERS-DEVERS-500kV |
| SDGE | March 11 | 7820_TL 230S_OVERLOAD_NG nomogram ; DEVERS-DEVERS-500kV |
| PGAE; SDGE | March 12 | DEVERS-DEVERS-500kV ; TESLA-LOSBANOS-500kV |
| PGAE:SDGE | March 14 | 7820_TL 230S_OVERLOAD_NG ; DEVERS-DEVERS-500kV |
| PGAE:SDGE | March 17 | PANOCHE-GATES-230kV ; MESA-CAL-LAGUBELL-230kV |
| PGAE:SDGE | March 19 | PANOCHE-GATES-230kV ; LOSBANOS-PANOCHE-230kV |
| PGAE | March 25 | DEVERS-DEVERS-500 |
Real-Time Price
Figure 3.2 shows daily simple average prices for all four DLAPs (PG&E, SCE, SDG&E, and VEA) for all hours respectively in FMM.
FMM DLAP prices on average decreased this month compared to the previous month with two spikes averaging above $70/MWh
TABLE 3.2 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 3.2: FMM Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| PGAE; SCE; SDGE; VEA | March 5 | DEVERS-DEVERS-500 |
Figure 3.3 below shows the daily frequency of positive price spikes and negative prices by price range for the DLAPs in the FMM.
The cumulative frequency of prices in FMM above $250/MWh edged down to 0 percent in March, while the cumulative frequency of negative prices rose to 23.47 percent in March from 16.84 percent in the previous month.
Figure 3.3: Daily Frequency of FMM DLAP Positive Price Spikes and Negative Prices
Figure 3.4 shows daily simple average prices for all the DLAPs (PG&E, SCE, SDG&E, and VEA) for all hours respectively in RTD.
RTD DLAP prices on average increased compared to the previous month. DLAPs for SDG&E increased on average in March 11th, 2025. Prices remained volatile compared to the previous month. Prices were lower at the end of March compared to previous month.
TABLE 3.3 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 3.4: RTD Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| PGAE | March 5 | DEVERS-DEVERS-500 |
| SDGE | March 11 | 7820_TL 230S_OVERLOAD_NG nomogram ; 7820_TL 230S_OVERLOAD_NG nomogram |
Figure 3.5 below shows the daily frequency of positive price spikes and negative prices by price range for the DLAPs in RTD.
The cumulative frequency of prices in RTD above $250/MWh rose to 0.07 percent in March from 0.02 percent in the previous month, while the cumulative frequency of negative prices increased to 23.24 percent in March from 18.13 percent in the previous month.
Figure 3.5: Daily Frequency of RTD DLAP Positive Price Spikes and Negative Prices
