5 Congestion Revenue Rights
Congestion revenue rights auction efficiency 1B became in effect on January 1, 2019. It includes key changes related to the congestion revenue rights settlements process:
- Targeted reduction of congestion revenue rights payouts on a constraint by constraint basis.
- Distribute congestion revenues to the extent that CAISO collected the requisite revenue on the constraint over the month. That is, implement a pro-rata funding for CRRs.
- Allow surpluses on one constraint in one hour to offset deficits on the same constraint in another hour over the course of the month.
- Only distribute surpluses to congestion revenue rights if the surplus is collected on a constraint that the congestion revenue right accrued a deficit, and only up to the full target payment value of the congestion revenue right.
- Distribute remaining surplus revenue at the end of the month, which are associated with constraints that collect more surplus over the month than deficits, to measured demand.
Monthly CRR Revenue
Figure 11 illustrates the daily CRR notional value in the corresponding month for the various transmission elements that experienced congestion during the month. CRR notional value is calculated as the product of CRR implied flow and constraint shadow price in each hour per constraint and CRR.
Figure 11: Daily CRR Notional Value by Transmission Element
Figure 12 illustrates the daily CRR offset value in the corresponding month for the transmission elements that experienced congestion during the month. CRR offset value is the difference between the revenue collected from the congestion CRR. A positive CRR offset value represents surplus and a negative CRR offset value represents shortfall.
The main reasons for CRR offset shortfall are
- Palo Verde intertie was binding in 20 days of this month, resulting in offset shortfall of $4.40 million. Palo Verde was derated this month due to various outages discussed in previous section.
- The line 92321_SYCA TP2_230_22832_SYCAMORE_230_BR_2 _1 was binding in one day of this month, resulting in offset shortfall of $1.97 million.
The main reasons for CRR offset surplus are
- Malin intertie was binding in 26 days of this month, resulting in offset surplus of $0.63 million. Malin was derated this month due to various outages discussed in previous section.
- NOB_ITC intertie was binding in 24 days of this month, resulting in offset surplus of $0.47 million.
Figure 12: Daily CRR Offset Value by Transmission Element
Furthermore, Table 5 shows the monthly CRR deficit in the month broken out by transmission elements and Table 6 shows the monthly CRR surplus in the month broken out by transmission elements.
| Constraint | Percent |
|---|---|
| PALOVRDE_ITC | 46.83 |
| 92321_SYCA TP2_230_22832_SYCAMORE_230_BR_2 _1 | 20.83 |
| Other | 8.95 |
| 22886_SUNCREST_230_22885_SUNCREST_500_XF_2 _P | 4.06 |
| 33020_MORAGA _115_32780_CLARMNT _115_BR_1 _1 | 3.81 |
| 33203_MISSON _115_33204_POTRERO _115_BR_1 _1 | 3.37 |
| 31108_SWNS FLT_60.0_31110_BRDGVLLE_60.0_BR_1 _1 | 3.32 |
| 30055_GATES1 _500_30057_DIABLO _500_BR_1 _1 | 3.02 |
| OMS 11136021_TL50003_NG | 2.28 |
| 30790_PANOCHE _230_30900_GATES _230_BR_2 _1 | 1.99 |
| 36851_NORTHERN_115_36852_SCOTT _115_BR_2 _1 | 1.52 |
| Constraint | Percent |
|---|---|
| MALIN500_ISL | 30.85 |
| NOB_ITC | 23.07 |
| OMS_10860061_RED_BLUFF_XF | 14.04 |
| 31566_KESWICK _60.0_31582_STLLWATR_60.0_BR_1 _1 | 6.86 |
| MEAD_ITC | 5.38 |
| 31110_BRDGVLLE_60.0_31112_FRUITLND_60.0_BR_1 _1 | 5.34 |
| Other | 4.95 |
| 24375_REDBLUFF_230_28195_REDBLUFF_500_XF_2 _P | 3.72 |
| 32214_RIO OSO _115_32244_BRNSWKT2_115_BR_2 _1 | 3.05 |
| 34200_ORO LOMA_70.0_34234_POSO J1 _70.0_BR_1 _1 | 1.82 |
| 34157_PANOCHET_115_34158_PANOCHE _115_BR_1 _1 | 0.90 |
Table 7 shows the monthly CRR payment in the month broken out by transmission elements
| Constraint | Percent |
|---|---|
| PALOVRDE_ITC | 46.03 |
| MALIN500_ISL | 12.89 |
| NOB_ITC | 9.32 |
| 30055_GATES1 _500_30057_DIABLO _500_BR_1 _1 | 9.28 |
| Other | 4.93 |
| 92321_SYCA TP2_230_22832_SYCAMORE_230_BR_2 _1 | 4.18 |
| 7440_MetcalfImport_Mossld-Metclf | 3.87 |
| 22886_SUNCREST_230_22885_SUNCREST_500_XF_2 _P | 3.47 |
| OMS_10860061_RED_BLUFF_XF | 2.86 |
| 30790_PANOCHE _230_30900_GATES _230_BR_2 _1 | 1.63 |
| 34200_ORO LOMA_70.0_34234_POSO J1 _70.0_BR_1 _1 | 1.54 |
Table 8 shows the monthly CRR payments. Net monthly balancing surplus in January was -$0.16 million. The auction revenues credited to the balancing account for January was $6.18 million. As a result, the balancing account for January had a surplus of approximately $6.02 million, which was allocated to measured demand. The Net Monthly Balancing Surplus is calculated as sum of CRR surplus plus CRR daily Balancing account minus total auction revenue. The Total Auction revenue is sum of monthly and annual auction revenue. The Allocation to Measured demand is calculated as sum of Total Auction revenue plus Net Monthly Balancing Surplus.
| Description | DECEMBER -2021 | JANUARY -2022 |
|---|---|---|
| CRR Notional Value | $61,657,231 | $30,369,814 |
| CRR Deficit | -$28,089,857 | -$9,393,096 |
| CRR Settlement Rule | -$183 | -$1,645 |
| CRR Adjusted Payment | $33,567,191 | $20,975,073 |
| CRR Surplus | $2,530,910 | $2,052,698 |
| Monthly Auction Revenue | $1,464,763 | $2,092,039 |
| Annual Auction Revenue | $3,080,092 | $4,083,608 |
| CRR Daily Balancing Account | $3,151,212 | $3,963,351 |
| Net Monthly Balancing Surplus | $1,137,266 | -$159,598 |
| Allocation to Measured Demand | $5,682,122 | $6,016,049 |