Configuration Guide for:Low Voltage Wheeling Allocation / Date: 11/05/2010 10/20/12
Settlements & Billing
BPM Configuration Guide: Low Voltage Wheeling Allocation
CC 383
Version 5.2 5.3
CAISO, 2018 / Page 1 of 13Settlements & Billing / Version: 5.2 5.3
Configuration Guide for:Low Voltage Wheeling Allocation / Date: 11/05/2010 10/20/12
Table of Contents
1.Purpose of Document
2.Introduction
2.1Background
2.2Description
3.Charge Code Requirements
3.1Business Rules
3.2Predecessor Charge Codes
3.3Successor Charge Codes
3.4Inputs – External Systems
3.5Inputs - Predecessor Charge Codes or Pre-calculations
3.6CAISO Formula
3.7Outputs
4.Charge Code Effective Dates
1.Purpose of Document
The purpose of this document is to capture the requirements and design specification for a SaMC Charge Code in one document.
2.Introduction
2.1Background
The Low Voltage Wheeling Access Charge allocation Charge Code is defined for and assessed at the Low Voltage Scheduling Points and Take-Out Points where Energy exits the CAISO Controlled Grid. Each Participating Transmission Owner(PTO) has its own Utility-Specific Low Voltage Wheeling rate. As authorized by FERC, the PTOs use these Wheeling charges collected by the CAISO in CC 383 to offset their Low Voltage Transmission Revenue Requirement in CC 385, Low Voltage Wheeling Revenue Payment.
Pursuant to Section 36.9 of the CAISO Tariff, an entity that serves Load outside of the CAISO Balancing Authority Area is eligible to participate in the Congestion Revenue Rights (CRR) Allocation process if such entity has made a pre-payment to the CAISO and has met the requirements in Section 36.9. The prepayment amount for such consideration shall equal the MW of CRR requested times the WAC associated with the Scheduling Point at the time of the request corresponding to the CRR Sink times the number of hours in the CRR Term for each requested CRR MW. For the amount of CRRs that are allocated to the entity, the CAISO will exempt the SC for such entity from the WAC for any export at the Scheduling Point corresponding to the sink of each allocated CRR, for all hours of the corresponding CRR Term, until the pre-paid funds are exhausted. Once the funds are exhausted, the CAISO will charge the SC the WAC for all transactions at the Scheduling Point. At the end of the CRR Term any remaining balance corresponding to that CRR Term and Scheduling Point is allocated to the PTOs based on their ownership or Entitlement of the Scheduling Point.
2.2 Description
The Low Voltage Wheeling Access Chargeallocations, assessed against the combination of scheduled low voltage real-time gross exports (excluding amounts exempted due to CRR pre-payment and Existing Transmission Contracts (ETCs)) for low voltage Scheduling Points and Take-Out Points, are calculated daily based on hourly actual volumes, then summed, charged and allocated at the end of the month. Wheeling Access Charges are calculated differently for Scheduling Points and Take-Out Points. Scheduling Points are charged at the Utility-Specific Low Voltage Wheeling Rate associated with the PTO holding the ownership or Entitlement based on the capacity right at such point. Low Voltage Wheeling quantities for Take-Out Points are either submitted directly to Settlements as one monthly aggregate value by the SC within 5 days of the end of the month or are metered and are charged at the Utility-Specific Low Voltage Wheeling rate associated with the PTO holding the ownership or Entitlement at such point.
Recalculations for any reason including a rate change are run against the most recent Settlement Amounts and Invoiced with other market based charges. Recalculations for FERC ordered rate changes are processed and Invoiced against the associated Bill Period and are subject to interest associated allocations.
3.Charge Code Requirements
3.1Business Rules
Bus Req ID / Business Rule1.0 / CC 383 Low Voltage Wheeling Access Chargeallocations are assessed to all SCs the LowVoltageFacilityUtilitySpecificRate at each Low Voltage Scheduling Point and Take-Out Point where Energy exits the CAISO Controlled Grid
2.0 / A Low Voltage Scheduling Point maps to a single PTO
3.0 / For the amount of CRRs that were allocated to an entity, the CAISO will exempt the SC for that entity from WAC for any export at the Scheduling Point corresponding to the sink of each allocated CRR, for all hours of the corresponding CRR Term, until the pre-paid funds are exhausted
3.1 / At the end of the CRR Term any remaining pre-paid balance corresponding to that CRR Term and Scheduling Point will be allocated to the PTOs in CG CC CRR Prepayment Remainder Allocation
3.2 / To the extent the pre-paid balance amount for a particular CRR Term and Scheduling Point is exhausted prior to the end of the duration of the awarded CRR the Scheduling Coordinator designated by the CRR Holder that has been allocated CRRs will be charged for the Wheeling Access Charge (WAC)
4.0 / For adjustments to the Charge Code that cannot be accomplished by correction of upstream data inputs, recalculation or operator override Pass Through Bill Charge logic will be applied
3.2Predecessor Charge Codes
Charge Code/ Pre-calc NameCC 382 High Voltage Wheeling Allocation
CG PC Wheel Export Quantity
CG PC High Voltage Access Charge and Transition Charge
3.3Successor Charge Codes
Charge Code/ Pre-calc NameCC 6727 CRR Prepayment Remainder Allocation
CC 385 Low Voltage Wheeling Revenue Payment
3.4Inputs – External Systems
Row # / Variable Name / Description1 / VoltageLevelIndicator Q / Standing Data that contains voltage level indicator by Intertie ID Q. Indicator designating Scheduling Point as High (H) or Low (L) Voltage.
2 / CRRHourlyTOU dh / The CRR time of use for Trading Hour h. This definition is kept in the Master File with values 1 for ON (or on-peak hours) or 0 for OFF (or off-peak hours).
3 / TotalCRROffPeakPrepaymentAmount BQp’ / Standing data. Total CRRoff peak prepayment amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’.
4 / TotalCRROnPeakPrepaymentAmount BQp’ / Standing data. Total CRR on peak prepayment amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’.
5 / PTBBusinessAssociateMonthlyIntertieLowVoltageWheelingAmount BJm / Pass Through Bill (PTB) amount for this Charge Code to be settled with Business Associate B, identified by PTB ID J, for Trade Month m. ($)
3.5Inputs - Predecessor Charge Codes or Pre-calculations
Row # / Variable Name / Predecessor Charge Code/Pre-calc Configuration
1 / LowVoltageFacilityUtilitySpecificRate Pmd / HV Wheeling Rates – Pre-calculation
2 / TotalCRRPaymentAfterHighVoltageOffPeakDrawdownAmount BQp’m / CC 382 High Voltage Wheeling Allocation
3 / TotalCRRPaymentAfterHighVoltageOnPeakDrawdownAmount BQp’m / CC 382 High Voltage Wheeling Allocation
4 / WheelExportQuantityBtQPmdh / CG PC Wheel Export Quantity. It is assumed that this value represents only those Scheduling Points that are export capable.
5 / BusinessAssociateDailyTakeOutPointLowVoltageWheelExportQuantity BQmd / CG PC Wheel Export Quantity
6 / BusinessAssociateDailyIntertieLowVoltageWheelExportQuantity BQmd / CG PC Wheel Export Quantity
7 / BADayIntertieTOPWheelExportNormalizedPTBQuantity BPQmd / CG PC Wheel Export Quantity
8 / BADayNonPTOTakeOutPointMarketDataExportQtyLessETCQuantity BPQmd / CG PC Wheel Export Quantity
3.6CAISO Formula
The ISO formula for Low Voltage Wheeling Allocations by Business Associate B, by Intertie ID Q, per Trading Monthm is as follows:
3.6.1.1InitialSchedulingPointLowVoltageWheelingSettlementAmountBtQPmdh =(-1)*
WheelExportQuantity BtQPmdh * LowVoltageFacilityUtilitySpecificRate Pmd
Where
Resource Type (t) = ‘ETIE’.
AND
VoltageLevelIndicator Q = 0 (”Low”) for Low Voltage
3.6.1.2TotalInitialSchedulingPointLowVoltageOffPeakWheelingSettlementAmount BtQPmdh = (1-CRRHourlyTOUdh)*InitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPmdh
3.6.1.3TotalInitialSchedulingPointLowVoltageOnPeakWheelingSettlementAmount BtQPmdh = CRRHourlyTOUdh*InitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPmdh
3.6.1.4TotalMonthlySchedulingPointLowVoltageOffPeakWheelingSettlementAmount BQm =
TotalInitialSchedulingPointLowVoltageOffPeakWheelingSettlementAmount BtQPmdh
3.6.1.5TotalMonthlySchedulingPointLowVoltageOnPeakWheelingSettlementAmount BQm =
TotalInitialSchedulingPointLowVoltageOnPeakWheelingSettlementAmount BtQPmdh
3.6.1.6AvailableMonthlyCRRLowVoltageOffPeakPrepaymentPaymentAmount BQm =
TotalCRROffPeakPrepaymentAmount BQp' -TotalCRRPaymentAfterHighVoltageOffPeakDrawdownAmount BQp’m
3.6.1.7AvailableMonthlyCRRLowVoltageOnPeakPrepaymentPaymentAmount BQm =
TotalCRROnPeakPrepaymentAmount BQp' -TotalCRRPaymentAfterHighVoltageOnPeakDrawdownAmount BQp’m
3.6.1.8CRRPrepaymentLowVoltageOffPeakDrawDownAmount BQm = min ( TotalMonthlySchedulingPointLowVoltageOffPeakWheelingSettlementAmount BQm, AvailableMonthlyCRRLowVoltageOffPeakPrepaymentPaymentAmount BQm)
3.6.1.9CRRPrepaymentLowVoltageOnPeakDrawDownAmount BQm = min ( TotalMonthlySchedulingPointLowVoltageOnPeakWheelingSettlementAmount BQm, AvailableMonthlyCRRLowVoltageOnPeakPrepaymentPaymentAmount BQm)
3.6.1.10MonthlyInitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPm =InitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPmdh
3.6.1.11DailyTakeOutPointLowVoltageWheelingSettlement BQPmd = (-1)* ((BADayIntertieTOPWheelExportNormalizedPTBQuantity BPQmd + BADayNonPTOTakeOutPointMarketDataExportQtyLessETCQuantity BPQmd )* LowVoltageFacilityUtilitySpecificRate Pmd ),0)
Where
VoltageLevelIndicator (Q) = 0(“Low”) for LowVoltage
e
3.6.1.12MonthlyTakeOutPointLowVoltageWheelingSettlement BQPm = DailyTakeOutPointLowVoltageWheelingSettlement BQPmd
3.6.1.13ActualMonthlyLowVoltageWheelingSettlementAmount BQm = ( MonthlyInitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPm +MonthlyTakeOutPointLowVoltageWheelingSettlement BQPm)– CRRPrepaymentLowVoltageOffPeakDrawDownAmount BQm- CRRPrepaymentLowVoltageOnPeakDrawDownAmount BQm
3.6.1.14BAMonthlyIntertieCRRPaymentLeftAfterLowVoltageDrawDownBalance BQp’m= (-1) *( TotalCRRPaymentAfterHighVoltageOffPeakDrawdownAmount BQp’m+ TotalCRRPaymentAfterHighVoltageOnPeakDrawdownAmount BQp’mCRRPrepaymentLowVoltageOffPeakDrawDownAmount BQm + CRRPrepaymentLowVoltageOnPeakDrawDownAmount BQm )
3.6.1.15
MonthlyIntertieLowVoltageSchedulingPointOrTOPQuantityBQm = BusinessAssociateDailyTakeOutPointLowVoltageWheelExportQuantityBQmd + BusinessAssociateDailyIntertieLowVoltageWheelExportQuantity BQmd
3.6.1.16MonthlyIntertieLowVoltageSchedulingPointOrTOPPrice BQm = (-1)* ActualMonthlyLowVoltageWheelingSettlementAmount BQm / MonthlyIntertieLowVoltageSchedulingPointOrTOPQuantity BQm
3.7Outputs
Output Req ID / Name / Description1 / In addition to any outputs listed below, all inputs shall be included as outputs.
2 / ActualMonthlyLowVoltageWheelingSettlementAmountBQm / Monthly Low Voltage Wheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m
3 / DailyTakeOutPointLowVoltageWheelingSettlementBQPmd / Take-Out Point Low Voltage Wheeling Settlement by Business Associate B, Intertie ID Q, PTO ID P,Trading Month m,Trading Day d
A BA’s daily calculated Non-PTO Load Wheeling charge at low voltage TOPs. The input quanties include both manually submitted PTB Non-PTO quantities (where ETCs were excluded before the PTB was submitted) and the market data Non- PTO Load quantity which had ETCs subtracted from it in a calculation in Wheel Export Quantity PC.
4 / InitialSchedulingPointLowVoltageWheelingSettleme ntAmount BtQPmdh / Initial Scheduling Point Low Voltage Wheeling Settlement Amount by Business Associate B,resource type t, Intertie ID Q, PTO ID P,Trading Month m,Trading Day d,Trading Hour h
Daily Low Voltage Wheeling charge assessed against quantity at low voltage Interties. If an SC does not have CRRs, the daily calculations rolled up for the month is the monthly Wheeling charge. If the SC does have CRRs, it is not until the monthly run that CRRs are subtracted from daily calculations monthly rollup.
5 / TotalInitialSchedulingPointLowVoltageOffPeakWheelingSettlementAmount BtQPmdh / Total initial Scheduling Point Low Voltage off peak Wheeling Settlement Amount by Business Associate B,resource type t, Intertie ID Q, PTO ID P,Trading Month m,Trading Day d,Trading Hour h
Evaluates which hourly Wheeling charges potentially can be offset by off peak CRR amount
6 / TotalInitialSchedulingPointLowVoltageOnPeakWheelingSettlementAmount BtQPmdh / Total initial Scheduling Point Low Voltage on peak Wheeling Settlement Amount by Business Associate B,resource type t, Intertie ID Q, PTO ID P, Trading Month m,Trading Day d,Trading Hour h
Evaluates which hourly Wheeling charges potentially can be offset by on peak CRR amount
7 / TotalMonthlySchedulingPointLowVoltageOnPeakWheelingSettlementAmount BQm / Total monthly Scheduling Point Low Voltage on peak Wheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m
Sum for month all hourly Wheeling charges which potentially can be offset by off peak CRR amount
8 / TotalMonthlySchedulingPointLowVoltageOffPeakWheelingSettlementAmount BQm / Total monthly Scheduling Point Low Voltageoff peak Wheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m
Sum for month all hourly Wheeling charges which potentially can be offset by off peak CRR amount
9 / AvailableMonthlyCRRLowVoltageOffPeakPrepaymentPaymentAmount BQm / Available monthly CRR Low Voltage off peak prepayment payment amount by Business Associate B, Intertie ID Q, and Trading Month m
Take the submitted off peak CRRs and subtract the off peak CRR amount that was utilized in CC382 drawdown
10 / AvailableMonthlyCRRLowVoltageOnPeakPrepaymentPaymentAmount BQm / Available monthly CRR Low Voltage on peak prepayment payment amount by Business Associate B, Intertie ID Q, and Trading Month m
Take the submitted on peak CRRs and subtract the on peak CRR amount that was utilized in CC382 drawdown
11 / CRRPrepaymentLowVoltageOffPeakDrawDownAmount BQm / CRR prepayment Low Voltageoff peak draw down amount by Business Associate B, Intertie ID Q, and Trading Month m
In CC 383,BA can utilize the lower of :
The monthly sum of hourly Wheeling charges that potentially can be offset by off peak CRR amount
OR
The submitted off peak CRRs minus the off peak CRR amount that was utilized in CC382 drawdown
12 / CRRPrepaymentLowVoltageOnPeakDrawDownAmount BQm / CRR prepayment Low Voltage on peak draw down amount by Business Associate B, Intertie ID Q, and Trading Month m
In CC 383,BA can utilize the lower of :
The monthly sum of hourly Wheeling charges that potentially can be offset by off peak CRR amount
OR
The submitted on peak CRRs minus the on peak CRR amount that was utilized in CC382 drawdown
13 / MonthlyInitialSchedulingPointLowVoltageWheelingSettlementAmount BtQPm / Monthly initial Scheduling Point Low Voltage Wheeling Settlement Amount by Business Associate B,resource type t, Intertie ID Q, PTO ID P, Trading Month m
14 / MonthlyTakeOutPointLowVoltageWheelingSettlementBQPm / Monthly Take Out Point Low Voltage Wheeling Settlement by Business Associate B, Intertie ID Q, PTO ID P, Trading Month m
15 / BAMonthlyIntertieCRRPaymentLeftAfterLowVoltageDrawDownBalanceBQp’m / BA monthly Intertie CRR Payment left after Low Voltage draw down balanceby Business Associate B, Intertie ID Q, CRR Prepayment ID p’, and Trading Month m
16 / MonthlyIntertieLowVoltageSchedulingPointOrTOPQuantity BQm / Monthly Intertie Low Voltage Scheduling Point or TOP quantity by Business Associate B, Intertie ID Q, and Trading Month m
17 / MonthlyIntertieLowVoltageSchedulingPointOrTOPPrice BQm / Monthly Intertie Low Voltage Scheduling Point or TOP price by Business Associate B, Intertie ID Q, and Trading Month m
CAISO, 2018 / Page 1 of 13
Settlements & Billing / Version: 5.2 5.3
Configuration Guide for:Low Voltage Wheeling Allocation / Date: 11/05/2010 10/20/12
4.Charge Code Effective Dates
Charge Code/Pre-calc Name / Document Version / Effective Start Date / Effective End Date / Version Update Type
CC 383 – Low Voltage Wheeling Allocation / 5.0 / 04/01/09 / 03/31/09 / Documentation Edits Only
CC 383 – Low Voltage Wheeling Allocation / 5.0a / 11/1/2009 / 03/31/09 / Documentation Edits Only
CC 383 – Low Voltage Wheeling Allocation / 5.1 / 04/01/09 / Open03/31/09 / Configuration Impacted
CC 383 – Low Voltage Wheeling Allocation / 5.2 / 1/1/2011 / Open12/31/10 / Configuration Impacted
CC 383 – Low Voltage Wheeling Allocation / 5.3 / 4/1/09 / Open / Configuration Impacted
CAISO, 2018 / Page 1 of 13