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.
Average Day-Ahead DLAP prices in PGAE increased relative to the previous month, while prices in SCE, SDGE, and VEA remained largely unchanged between August and September.
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; VEA; SDGE; SCE | September 1 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the METCALF-METCALF-230 XFMR from HE 17 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 2 | METCALF-METCALF-230 XFMR from HE 9 to HE 23 |
| PGAE; VEA; SDGE; SCE | September 4-5 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 17 and on the HENTAP1-MUSTANGS-230kV line from HE 18 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 6 | MIGUEL_BKs_MXFLW_NG nomogram binding from HE 8 to HE 16 along with congestion on the LOSBANOS-PANOCHE-230kV line from HE 9 to HE 17 |
| PGAE;SDGE | September 7-13 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 17 |
| PGAE | September 14 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the DEVERS-DEVERS-500 XFMR from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 15 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 16 |
| PGAE; VEA; SDGE; SCE | September 16 | DEVERS-CALCAPS2-500kV line from HE 9 to HE 18 and on the LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 17 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the DEVERS-CALCAPS2-500kV line from HE 9 to HE 18 |
| VEA; SDGE | September 18 | LOSBANOS-PANOCHE 230kV line from HE 8 to HE 18 and on the 7690-CONTRL_INYOKN EXP Nomogram from HE 1 to HE 24 |
| VEA; SDGE | September 19 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the DEVERS-CALCAPS2-500kV line from HE 9 to HE 17 |
| VEA; SCE | September 20-22 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 23 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the MESA CAL-LAGUBELL-230kV line from HE 12 to HE 15 |
| PGAE; VEA; SDGE; SCE | September 24 | SWTWTRTP-SWEETWTR-69kV line from HE 8 to HE 19 and on the EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 |
| VEA; SCE | September 25-26 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the PANOCHE-GATES-230kV line from HE 9 to HE 17 |
| VEA; SCE | September 27 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 16 |
| PGAE; SDGE | September 28 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the PANOCHE-GATES-230kV line from HE 8 to HE 17 |
| PGAE; SDGE; VEA; SCE | September 29 | GATES-MIDWAY-230kV line from HE 9 to HE 16 and on the LOSBANOS-PANOCHE-230kV line from HE 8 to HE 17 |
| PGAE: SDGE | September 30 | GATES-MIDWAY-230kV line from HE 8 to HE 22 and on the GATES2-MIDWAY-500kV line from HE 8 to HE 17 |
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.
Except for PGAE, average FMM DLAP prices decreased from the previous month, in line with the load decline described above.
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 | September 1 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the METCALF-METCALF-230 XFMR from HE 15 to HE 22 |
| PGAE | September 2 | METCALF-METCALF-230 XFMR from HE 16 to HE 19 and on the MUSTANGS-GATES-230kV line from HE 19 to HE 23 |
| PGAE; VEA | September 3 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the HENTAP1-MUSTANGS-230kV line from HE 19 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 4 | 7820_TL 230S_OVERLOAD_NG nomogram binding from HE 15 to HE 21 and on the HENTAP1-MUSTANGS-230kV line from HE 18 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 5 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the MOSSLD-LASAGUIL-230kV line from HE 10 to HE 16 |
| PGAE; VEA; SDGE; SCE | September 6 | MIGUEL_BKs_MXFLW_NG nomogram binding from HE 8 to HE 18 and 7820_TL23040_IV_SPS_NG binding from HE 17 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 7 | MOSSLD-LASAGUIL-230kV line from HE 8 to HE 10 and on the LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 8 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the MOSSLD-LASAGUIL-230kV line from HE 8 to HE 17 |
| PGAE; SDGE | September 9 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 10 | MOSSLD-LASAGUIL-230kV line from HE 9 to HE 17 and on the METCALF-METCALF-230 XFMR from HE 11 to HE 23 |
| SDGE | September 11 | EL-CAJON-LOSCOCHS-69kV line from HE 15 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 12 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the SYCAMORE-PENSQTOS-230kV line from HE 9 to HE 13 |
| PGAE; SDGE | September 13 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the PANOCHE-GATES-230kV line from HE 19 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 14-15 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 10 |
| PGAE; VEA; SDGE; SCE | September 16 | J.HINDS2-MIRAGE-230kV line from HE 3 to HE 24 and on the LOSBANOS-PANOCHE-230kV line from HE 8 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 17 | LOSBANOS-PANOCHE-230kV line from HE 11 to HE 19 and on the J.HINDS2-MIRAGE-230kV line from HE 1 to HE 21 |
| SDGE | September 18 | HPLND-CLVRDLJT 60kV line from HE 1 to HE 3, HE 11 and from HE 15 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 19 | 7820_TL 230S_OVERLOAD_NG nomogram binding from HE 1 to HE 24 |
| PGAE; VEA; SDGE; SCE | September 20 | 7820_PK_EC_OVERLOAD_NG nomogram binding from HE 11 to HE 24 |
| PGAE; VEA; SDGE; SCE | September 21 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 22 | MESA CAL-LAGUBELL-230kV line from HE 9 to HE 12 and on the SYCAMORE-PENSQTOS-230kV line from HE 16 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 23 | SYCAMORE-PENSQTOS-230kV line from HE 8 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 17 |
| PGAE; VEA; SDGE; SCE | September 24 | SUNCREST-SUNC TP2-230kV line from HE 8 to HE 16 and on the PANOCHE-GATES-230kV line from HE 8 to HE 17 |
| PGAE; SDGE | September 25 | EL-CAJON-LOSCOCHS-69kV line from HE 8 to HE 14 and on the PANOCHE-GATES-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 26 | SYCAMORE-PENSQTOS-230kV line from HE 8 to HE 18 and on the PANOCHE-GATES-230kV line from HE 8 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 27 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the MC CALL-MC CALL-230 XFMR from HE 18 to HE 21 |
| PGAE | September 28 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the LOSBANOS-GATES1-500kV line from HE 11 to HE 16 |
| PGAE; VEA; SDGE; SCE | September 29 | GATES2-MIDWAY-500kV line from HE 8 to HE 21 and on the MIGUEL-MIGUEL-230 XFMR from HE 10 to HE 18 |
| PGAE | September 30 | GATES2-MIDWAY-500kV line from HE 8 to HE 22 and on the LOSBANOS-PANOCHE-230kV line from HE 11 to HE 17 |
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 increased from 0.042 percent in August to 0.13 percent in September, while the cumulative frequency of negative prices increased from 1.08 percent in August to 1.5 percent in September, correlated with an increase in renewable generation curtailment.
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 decreased compared to the previous month, except for PGAE, aligning with the decrease in load discussed in the last section.
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 | September 1 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the METCALF-METCALF-230 XFMR from HE 15 to HE 22 |
| PGAE | September 2 | METCALF-METCALF-230 XFMR from HE 16 to HE 19 and on the MUSTANGS-GATES-230kV line from HE 19 to HE 23 |
| PGAE; VEA | September 3 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the HENTAP1-MUSTANGS-230kV line from HE 19 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 4 | 7820_TL 230S_OVERLOAD_NG nomogram binding from HE 14 to HE 21 along with congestion on the HENTAP1-MUSTANGS-230kV line in HE 20 |
| PGAE; VEA; SDGE; SCE | September 5 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the MOSSLD-LASAGUIL-230kV line from HE 10 to HE 16 |
| PGAE; VEA; SDGE; SCE | September 6 | MIGUEL_BKs_MXFLW_NG nomogram binding from HE 8 to HE 18 and 7820_TL23040_IV_SPS_NG binding from HE 18 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 7 | MOSSLD-LASAGUIL-230kV line from HE 8 to HE 17 and on the LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 |
| PGAE; SDGE | September 8 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the MOSSLD-LASAGUIL-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 9 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 10 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 14 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 11 | SYCAMORE-PENSQTOS-230kV line from HE 8 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 12 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the SYCAMORE-PENSQTOS-230kV line from HE 9 to HE 13 |
| PGAE; SDGE | September 13 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the PANOCHE-GATES-230kV line from HE 19 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 14-15 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the MOSSLD-LASAGUIL-230kV line from HE 9 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 16 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 19 and on the DEVERS-CALCAPS2-500kV line from HE 9 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 17 | LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 and on the J.HINDS2-MIRAGE-230kV line from HE 1 to HE 18 |
| SDGE | September 18 | SILVERGT-CORONADO 69kV line from HE 13 to HE 16 |
| PGAE; VEA; SDGE; SCE | September 19 | 7820_TL 230S_OVERLOAD_NG nomogram binding from HE 1 to HE 24 |
| PGAE; VEA; SDGE; SCE | September 20 | 7820_PK_EC_OVERLOAD_NG nomogram binding from HE 10 to HE 24 |
| PGAE; VEA; SDGE; SCE | September 21 | EL CAJON-LOSCOCHS-69kV line from HE 1 to HE 24 and on the LOSBANOS-PANOCHE-230kV line from HE 9 to HE 18 |
| PGAE; VEA; SDGE; SCE | September 22 | MESA CAL-LAGUBELL-230kV line from HE 9 to HE 12 and on the SYCAMORE-PENSQTOS-230kV line from HE 15 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 23 | SYCAMORE-PENSQTOS-230kV line from HE 8 to HE 18 and on the MESA CAL-LAGUBELL-230kV line from HE 11 to HE 13 |
| PGAE; VEA; SDGE; SCE | September 24 | SUNCREST-SUNC TP2-230kV line from HE 8 to HE 16 and on the PANOCHE-GATES-230kV line from HE 9 to HE 18 |
| PGAE; SDGE | September 25 | S EL-CAJON-LOSCOCHS-69kV line from HE 9 to HE 14 and on the PANOCHE-GATES-230kV line from HE 7 to HE 22 |
| PGAE; VEA; SDGE; SCE | September 26 | SYCAMORE-PENSQTOS-230kV line from HE 8 to HE 17 and on the LOSBANOS-PANOCHE-230kV line from HE 8 to HE 19 |
| PGAE; VEA; SDGE; SCE | September 27-28 | LOSBANOS-PANOCHE-230kV line from HE 8 to HE 18 and on the MC CALL-MC CALL-230 XFMR from HE 18 to HE 21 |
| PGAE; VEA; SDGE; SCE | September 29 | GATES2-MIDWAY-500kV line from HE 8 to HE 17 and on the MIGUEL-MIGUEL-230 XFMR from HE 9 to HE 18 |
| PGAE | September 30 | GATES2-MIDWAY-500kV line from HE 8 to HE 22 and on the LOSBANOS-PANOCHE-230kV line from HE 10 to HE 16 |
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 increased from 0.0756 percent in August to 0.0781 percent in September, while the cumulative frequency of negative prices increased from 0.748 percent in August to 2.05 percent in September, correlated with an increase in renewable generation curtailment.
Figure 3.5: Daily Frequency of RTD DLAP Positive Price Spikes and Negative Prices
