3 Market Performance Metrics
Day-Ahead Prices
Figure 2 show the daily simple average load-aggregation points (LAP) prices for each of the four default LAPs (PG&E, SCE, SDG&E, and VEA) for all hours. Table 2 below lists the binding constraints along with the associated DLAP locations and the dates when the binding constraints resulted in relatively high or low DLAP prices.
Figure 2: Day-Ahead Simple Average LAP Prices (All Hours)
| DLAP | Dates | Transmission Constraint |
|---|---|---|
| PGAE | June 10 | VASONA-METCALF 230 kV line, 7430_Summer_KTTLM_GATES_70_1 |
| PGAE | June 21 | 7440_MetcalfImport_Tes-Metcalf ,7430_Summer_KTTLM_GATES_70_1 |
| PGAE | June 22 | METCALF-METCALF-230 XFMR, MORAGA-MORAGA-115 XFMR, 7430_Summer_KTTLM_GATES_70_1 |
| PGAE | June 23-24 | TRCY PMP-TESLA D-230 kV line, MORAGA-MORAGA-115 XFMR, 7430_Summer_KTTLM_GATES_70_1 |
Real-Time Price
Figure 3 show daily simple average LAP prices for all the default LAPs (PG&E, SCE, SDG&E, and VEA) for all hours respectively in FMM. Table 3 lists the binding constraints along with the associated DLAP locations and the dates when the binding constraints resulted in relatively high or low DLAP prices.
Figure 3: FMM Simple Average LAP Prices (All Hours)
| DLAP | Dates | Transmission Constraint |
|---|---|---|
| PGAE | June 10 | VASONA-METCALF 230 kV line, 7430_Summer_KTTLM_GATES_70_1 |
| PGAE | June 21 | ML_RM12_NS, 7430_Summer_KTTLM_GATES_70_1 |
| PGAE | June 22-23 | TRCY PMP-TESLA D-230 kV line , 7430_Summer_KTTLM_GATES_70_1, ML_RM12_NS |
Figure 4 below shows the daily frequency of positive price spikes and negative prices by price range for the default LAPs in the FMM. The cumulative frequency of prices above $250/MWh increased to 0.89 percent in June from 0.36 percent in May. The cumulative frequency of negative prices decreased to 5.72 percent in June from 7.55 percent in May.
Figure 4: Daily Frequency of FMM LAP Positive Price Spikes and Negative Prices
Figure 5 show daily simple average LAP prices for all the default LAPs (PG&E, SCE, SDG&E, and VEA) for all hours respectively in RTD. TABLE 4 lists the binding constraints along with the associated DLAP locations and the dates when the binding constraints resulted in relatively high or low DLAP prices.
Figure 5: RTD Simple Average LAP Prices (All Hours)
| DLAP | Dates | Transmission Constraint |
|---|---|---|
| PGAE | June 5-6, 8, 30 | GATES1-GATES-500 kV XFMR, 6110_COI_N_S |
| PGAE | June 9, 23 | GATES1-GATES-500 kV XFMR, 6110_COI_N_S, TRCY PMP-TESLA D-230 kV line |
| PGAE | June 10 | MORAGA-MORAGA-115 kV XFMR , 6110_COI_N_S |
| PGAE | June 21-22 | 6110_COI_N_S |
Figure 4 below shows the daily frequency of positive price spikes and negative prices by price range for the default LAPs in RTD. The cumulative frequency of prices above $250/MWh inched up to 0.70 percent in June from 0.61 percent in May. The cumulative frequency of negative prices slipped to 7.76 percent in June from 10.02 percent in May.
Figure 6: Daily Frequency of RTD LAP Positive Price Spikes and Negative Prices
