Settlements & Billing / Version: 5.0
Configuration Guide for:High Voltage Wheeling Allocation / Date: 04/01/09

Settlements & Billing

BPM Configuration Guide: High Voltage Wheeling Allocation

CC 382

Version 5.0

CAISO, 2018 / Page 1 of 14
Settlements & Billing / Version: 5.0
Configuration Guide for:High Voltage Wheeling Allocation / Date: 04/01/09

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 Date

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 High Voltage Wheeling Allocation Charge Code develops the Settlement Amount for each BA ID for each month. CC 382 Wheeling Allocations are defined for and assessed at each High or Low Voltage Scheduling Point and Take-Out Point where Energy exits the CAISO Controlled Grid.

As authorized by FERC, the PTOs use these Wheeling charges collected by CAISO in CC 382 to offset their High Voltage Transmission Revenue Requirement in CC 384, High Voltage Wheeling Revenue Payment.

Pursuant to Section 36.9 of the CAISO Tariff, an entity that serves Load outside of the CAISO Control Area is eligible to participate in the CRR Allocation process if such entity has made a pre-payment to 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, 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 High Voltage Wheeling Allocation, assessed against the combination of scheduled high and low voltage and real-time gross exports (excluding amounts exempted due to CRR Pre-payment and ETCs) for high and low voltage Scheduling Points, are calculated daily based on hourly estimated volumes, but each day is recalculated using actual hourly 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. Transactions using Scheduling Points are charged at the appropriate Wheeling Rate associated with the voltage level of the Scheduling Point. Wheel quantities for Take-Out Points however, are submitted directly to Settlements from the SC via an interface utilize the Pass Through Bill – Calculation methodology and are charged the Wheeling rate associated with the TAC Area in which the Take-Out Point physically resides.

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 charges and associated allocations.

This Charge Code will be implemented pursuant to a configuration enhancement procedure that allows for gains in performance, thereby reducing the volume of calculations executed during the monthly Settlement Run. The outcome of this feature is not published on the monthly Settlements Statements issued to participants. However, this enhancement procedure has no impact on the actual calculation of the settlement amounts determined by this Charge code. The performance enhancement is achieved through the availability of a feature that makes the results of (previously calculated) daily Settlement Runs available during to the CAISO operator for the monthly run in lieu of the operator having to re-execute daily calculations within the monthly Settlement Run. Additionally, this feature will provide the CAISO operator monthly totals of (previously calculated) daily outputs as well as monthly totals of primary bill determinants as needed. The CAISO will notify participants of which Charge Code uses this feature by including this statement in the description of the affected Charge Codes. In addition, the CAISO will indicate in the applicable CAISO Formula sections which of the individual calculations within the monthly run utilize this feature.Participants can verify the Settlement Amounts resulting from this Charge Code in their monthly calculations by utilizing the daily input data as defined in the input sections of each Charge Code, the amounts and/or quantities of which are published on the relevant, daily Settlement Statements.

3.Charge Code Requirements

3.1Business Rules

Bus Req ID / Business Rule
1.0 / CC 382 High Voltage Wheeling Access Allocations are assessed at each High or Low Voltage Scheduling Point and Take-out Point where Energy exits the CAISO Controlled Grid
2.0 / Wheel Quantity associated with a Non-PTO Take-Out Point is assessed the High Voltage TAC rate of the TAC Area in which it resides
2.1 / Wheel quantities for Take-Out Points are submitted directly to Settlements from the SC via an interface utilizing the Pass Through Bill – Calculation methodology. SC’s submit values as one aggregated value for the month, per Take-out Point. Settlements takes the aggregated monthly MW value and allocates it out equally to each Trading Day within the same Trading Monthby creating daily PTBBill Determinants
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)

3.2Predecessor Charge Codes

Charge Code/ Pre-calc Name
High Voltage Wheeling Rates Pre-calculation
Wheel Export Quantity Pre-calculation

3.3Successor Charge Codes

Charge Code/ Pre-calc Name
CC 383 – Low Voltage Wheeling Allocation
CC 384 - High Voltage Wheeling Revenue Payment

3.4Inputs - External Systems

Row # / Variable Name / Description
1 / TakeOutPointWheelExportQty BQJPmd / Take Out Point Wheel Export Qty by Business Associate B, Intertie ID Q, PTB ID J, PTO ID P, and Trading Monthmand Trading Day d – (Non-PTO Take Out Point High and Low Voltage Wheel Export Qty’s are submitted by Scheduling Coordinators for those Resources, via interface. SC’s submit values as one aggregated value for the month, per Take-Out Point) . Settlements takes the aggregated monthly MW value and allocates it out equally to each Trading Day within the same Trading Month by creating daily PTB Bill Determinants
2 / VoltageLevelIndicator Q / Standing Data that contains Voltage Level Indicator by Intertie ID Q. Indicator designating Scheduling Point as High (H) or Low (L) Voltage
3 / CRRHourlyTOU dh / The CRR Time of Use for Trading Hour h. This definition is kept in Masterfile with values 1 for ON (or on-peak hours) or 0 for OFF (or off-peak hours).
4 / TotalCRROffPeakPrepaymentAmount BQp’ / Standing DataTotal CRR Off Peak Prepayment Amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’. Effective period is one specific calendar month
5 / TotalCRROnPeakPrepaymentAmount BQp’ / Standing DataTotal CRR On Peak Prepayment Amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’. Effective period is one specific calendar month

3.5Inputs - Predecessor Charge Codes or Pre-calculations

Row # / Variable Name / Predecessor Charge Code/
Pre-calc Configuration
1 / HighVoltageWheelingRate Qmd / HV Wheeling Rates – Pre-calculation
2 / WheelExportQuantity BtQPmdh / CG PC Wheel Export Quantity. It is assumed that this value represents only those Scheduling Points that are Export capable.
3 / BusinessAssociateDailyIntertieLowOrHighVoltageWheelExportQuantity BQmd / CG PC Wheel Export Quantity
4 / BusinessAssociateDailyTakeOutPointLowOrHighVoltageWheelExportQuantity BQmd / CG PC Wheel Export Quantity

3.6CAISO Formula

3.6.1The ISO formula for High Voltage Wheeling Allocation by Business Associate B, by Intertie ID Q, per Trading Monthm is as follows:

3.6.1.1InitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPmdh =(-1)*

WheelExportQuantity BtQPmdh * HighVoltageWheelingRate Qmd

Where

Resource Type (t) = ‘ETIE’.

AND

VoltageLevelIndicator Q = 1 (”High”) for High Voltage OR 0 (“Low”) for Low Voltage

3.6.1.2TotalInitialSchedulingPointHighVoltageOffPeakWheelingSettlementAmount BtQPmdh = (1-CRRHourlyTOUdh) *InitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPmdh

3.6.1.3TotalInitialSchedulingPointHighVoltageOnPeakWheelingSettlementAmount BtQPmdh = CRRHourlyTOUdh *InitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPmdh

3.6.1.4TotalMonthlySchedulingPointHighVoltageOffPeakWheelingSettlementAmount BQm =

TotalInitialSchedulingPointHighVoltageOffPeakWheelingSettlementAmount BtQPmdh

Note: TotalInitialSchedulingPointHighVoltageOffPeakWheelingSettlementAmount BtQPmdh is provided by the configuration enhancement procedure that returns the monthly amount as a summation of hourly off peak Wheeling Settlement amounts generated previously from hourly settlement calculation results for the applicable Trading Month.

3.6.1.5TotalMonthlySchedulingPointHighVoltageOnPeakWheelingSettlementAmount BQm =

TotalInitialSchedulingPointHighVoltageOnPeakWheelingSettlementAmount BtQPmdh

Note: TotalInitialSchedulingPointHighVoltageOnPeakWheelingSettlementAmount BtQPmdh is provided by the configuration enhancement procedure that returns the monthly amount as a summation of hourly on peak Wheeling Settlement amounts generated previously from hourly settlement calculation results for the applicable Trading Month.

3.6.1.6CRRPrepaymentHighVoltageOffPeakDrawDownAmount BQm = min ( TotalMonthlySchedulingPointHighVoltageOffPeakWheelingSettlementAmount BQm,TotalCRROffPeakPrepaymentAmount BQp’)

3.6.1.7CRRPrepaymentHighVoltageOnPeakDrawDownAmount BQm = min ( TotalMonthlySchedulingPointHighVoltageOnPeakWheelingSettlementAmount BQm,TotalCRROnPeakPrepaymentAmount BQp’)

3.6.1.8TotalCRRPaymentAfterHighVoltageOffPeakDrawdownAmount BQp’m = min ( TotalMonthlySchedulingPointHighVoltageOffPeakWheelingSettlementAmount BQm, TotalCRROffPeakPrepaymentAmount BQp’)

3.6.1.9TotalCRRPaymentAfterHighVoltageOnPeakDrawdownAmount BQp’m = min ( TotalMonthlySchedulingPointHighVoltageOnPeakWheelingSettlementAmount BQm, TotalCRROnPeakPrepaymentAmount BQp’)

3.6.1.10MonthlyInitialSchedulingPointHighVoltageWheelingSettlementAmountBtQPm =InitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPmdh

Note: InitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPmdh is provided by the configuration enhancement procedure that returns the monthly amount as a summation of hourly initial Wheeling Settlement amounts generated previously from hourly settlement calculation results for the applicable Trading Month.

3.6.1.11DailyTakeOutPointHighVoltageWheelingSettlement BQPmd= (-1)* (TakeOutPointWheelExportQty BQJPmd * HighVoltageWheelingRate Qmd)

Where

VoltageLevelIndicator (Q) = 1(“High”) for High Voltage OR 0 (“Low”) for Low Voltage

3.6.1.12MonthlyTakeOutPointHighVoltageWheelingSettlement BQPm= DailyTakeOutPointHighVoltageWheelingSettlement BQPmd

Note: DailyTakeOutPointHighVoltageWheelingSettlement BQPmd is provided by the configuration enhancement procedure that returns the monthly amount as a summation of daily TOP high voltage Wheeling Settlement amounts generated previously from daily settlement calculation results for the applicable Trading Month.

3.6.1.13ActualMonthlyHighVoltageWheelingSettlementAmount BQm = (MonthlyInitialSchedulingPointHighVoltageWheelingSettlementAmount BtQPm+ MonthlyTakeOutPointHighVoltageWheelingSettlement BQPm)- CRRPrepaymentHighVoltageOffPeakDrawDownAmount BQm - CRRPrepaymentHighVoltageOnPeakDrawDownAmount BQm

3.6.1.14MonthlyIntertieHighVoltageSchedulingPointOrTOPQuantityBQm = BusinessAssociateDailyIntertieLowOrHighVoltageWheelExportQuantity BQmd + BusinessAssociateDailyTakeOutPointLowOrHighVoltageWheelExportQuantity BQmd

Note: BusinessAssociateDailyTakeOutPointLowOrHighVoltageWheelExportQuantityBQmdis provided by the configuration enhancement procedure that returns the monthly quantity as a summation of daily Take Out Point export quantities generated previously from daily settlement calculation results for the applicable Trading Month.

Note: BusinessAssociateDailyIntertieLowOrHighVoltageWheelExportQuantityBQmdis provided by the configuration enhancement procedure that returns the monthly quantity as a summation of daily Intertie wheel export quantities generated previously from daily settlement calculation results for the applicable Trading Month.

3.6.1.15MonthlyIntertieHighVoltageSchedulingPointOrTOPPriceBQm = (-1)*ActualMonthlyHighVoltageWheelingSettlementAmountBQm / MonthlyIntertieHighVoltageSchedulingPointOrTOPQuantityBQm

3.7Outputs

Output Req ID / Name / Description
1 / In addition to any outputs listed below, all inputs shall be included as outputs.
2 / ActualMonthlyHighVoltageWheelingSettlementAmountBQm / Monthly High Voltage Wheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m.
3 / DailyTakeOutPointHighVoltageWheelingSettlementBQPmd / TakeOutPointHighVoltageWheelingSettlement by Business Associate B, Intertie ID Q, PTO ID P,Trading Month m,and Trading Day d.
4 / InitialSchedulingPointHighVoltageWheelingSettleme ntAmount BtQPmdh / Initial Scheduling Point High Voltage Wheeling Settleme nt Amount by Business Associate B, Rsrc Type t, Intertie ID Q, PTO ID P,Trading Month m,Trading Day d, and Trading Hour h.
5 / TotalInitialSchedulingPointHighVoltageOffPeakWheelingSettlementAmount BtQPmdh / Total Initial Scheduling Point High Voltage Off Peak Wheeling Settlement Amount by Business Associate B, Rsrc Type t, Intertie ID Q, PTO ID P,Trading Month m,Trading Day d, and Trading Hour h.
6 / TotalInitialSchedulingPointHighVoltageOnPeakWheelingSettlementAmount BtQPmdh / Total Initial Scheduling Point High Voltage On Peak Wheeling Settlement Amount by Business Associate B, Rsrc Type t, Intertie ID Q, PTO ID P, Trading Month m, Trading Day d, and Trading Hour h.
7 / TotalMonthlySchedulingPointHighVoltageOffPeakWheelingSettlementAmount BQm / Total Monthly Scheduling Point High Voltage Off PeakWheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m.
8 / TotalMonthlySchedulingPointHighVoltageOnPeakWheelingSettlementAmount BQm / Total Monthly Scheduling Point High Voltage On Peak Wheeling Settlement Amount by Business Associate B, Intertie ID Q, and Trading Month m.
9 / CRRPrepaymentHighVoltageOffPeakDrawDownAmount BQm / CRR Prepayment High Voltage Off Peak Draw Down Amount by Business Associate B, Intertie ID Q, and Trading Month m.
10 / CRRPrepaymentHighVoltageOnPeakDrawDownAmount BQm / CRR Prepayment High Voltage On Peak Draw Down Amount by Business Associate B, Intertie ID Q, and Trading Month m.
11 / MonthlyInitialSchedulingPointHighVoltageWheelingSettleme ntAmount BtQPm / Monthly Initial Scheduling Point High Voltage Wheeling Settlement Amount by Business Associate B, Rsrc Type t, Intertie ID Q, PTO ID P, and Trading Month m.
12 / MonthlyTakeOutPointHighVoltageWheelingSettlement BQPm / Monthly Take Out Point High Voltage Wheeling Settlement by Business Associate B, Intertie ID Q, PTO ID P, and Trading Month m.
13 / TotalCRRPaymentAfterHighVoltageOnPeakDrawdownAmount BQp’m / Total CRR Payment After High Voltage On Peak Drawdown Amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’, and Trading Month m.
14 / MonthlyIntertieHighVoltageSchedulingPointOrTOPPrice BQm / Monthly Intertie High Voltage Scheduling Point Or TOP Price by Business Associate B, Intertie ID Q, and Trading Month m.
15 / MonthlyIntertieHighVoltageSchedulingPointOrTOPQuantity BQm / Monthly Intertie High Voltage Scheduling Point Or TOP Quantity by Business Associate B, Intertie ID Q, and Trading Month m.
16 / TotalCRRPaymentAfterHighVoltageOffPeakDrawdownAmount BQp’m / Total CRR Payment After High Voltage Off Peak Drawdown Amount by Business Associate B, Intertie ID Q, CRR Prepayment ID p’, and Trading Month m.
CAISO, 2018 / Page 1 of 14
Settlements & Billing / Version: 5.0
Configuration Guide for:High Voltage Wheeling Allocation / Date: 04/01/09

4.Charge Code Effective Date

Charge Code/
Pre-calc Name / Document Version / Effective Start Date / Effective End Date / Version Update Type
CC 382 – High Voltage Wheeling Allocation / 5.0 / 04/01/09 / Open / Documentation Edits Only
CAISO, 2018 / Page 1 of 14