3 Market Performance Metrics
Day-Ahead Prices
Figure 2 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 increased this month compared to the previous month.
TABLE 3 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 2: IFM (Day-Ahead) Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| SDGE | January 21 | MIGUEL_BKs_MXFLW_NG nomogram |
Real-Time Price
Figure 3 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 increased this month compared to the previous month.
TABLE 4 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 3: FMM Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| SDGE | January 23 | MIGUEL_BKs_MXFLW_NG nomogram, 7820_TL23040_IV_SPS_NG nomogram |
| SDGE | January 24 | MIGUEL_BKs_MXFLW_NG nomogram |
Figure 4 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 up to 0.08 percent in January from 0 percent in the previous month, while the cumulative frequency of negative prices increased to 4.34 percent in January from 0.87 percent in the previous month.
Figure 4: Daily Frequency of FMM DLAP Positive Price Spikes and Negative Prices
Figure 5 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 this month compared to the previous month.
TABLE 5 below lists the binding constraints that resulted in relatively high or low DLAP prices on certain dates.
Figure 5: RTD Simple Average DLAP Prices (All Hours)
| DLAP LMPs Affected | Dates | Transmission Constraint |
|---|---|---|
| SDGE | January 23 | MIGUEL_BKs_MXFLW_NG nomogram, 7820_TL23040_IV_SPS_NG nomogram |
| SDGE | January 24 | MIGUEL_BKs_MXFLW_NG nomogram |
Figure 6 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 inched up to 0.20 percent in January from 0.03 percent in the previous month, while the cumulative frequency of negative prices rose to 4.21 percent in January from 1.13 percent in the previous month.
Figure 6: Daily Frequency of RTD DLAP Positive Price Spikes and Negative Prices
