Configuration Guide for: FERC Mandated Interest on Re-runs / Date: 04/01/09
Settlements & Billing
BPM Configuration Guide:FERC Mandated Interest on Re-runs
CC 5999
Version 5.0
CAISO, 2018 / Page 1 of 6Settlements & Billing / Version: 5.0
Configuration Guide for: FERC Mandated Interest on Re-runs / 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
Re-runs are recalculations of previously settled Billing Periods where data such as prices, meter quantities, etc. has been updated. FERC Mandated Interest on Re-runs is calculated and applied when the CAISO is instructed to do so by the FERC. After the actual Settlements recalculation, interest is then separately determined on the resulting under or overpayment for the Bill Period that is being resettled.
Interest is calculated using a compounded quarterly FERC published interest rate. This calculation is performed outside the Settlements system and Invoiced monthly.
2.2Description
FERC Mandated Interest on Re-runs is calculated by taking the net amount of the original Invoice and the Re-run Invoice and multiplying that amount by the FERC published Interest Rate. The Interest payments to Business Associate(s) will be offset by Interest charges to other Business Associate(s). FERC Mandated Interest on Re-runs is only calculated and applied to Re-runs when the CAISO is instructed to do so, therefore Re-run with interest calculations must be isolated from other re-runs and data changes that may affect Invoice amounts. Re-runs with FERC Mandated Interest must be calculated separately as the interest is only applied to amounts that are charged/paid to Business Associates as a result of the Re-run.
FERC Mandated Interest on Re-runs is calculated monthly and appears on the monthly Invoice. FERC Mandated Interest payments/charges are calculated manually outside the Settlement system and the FERC Interest Rate is applied in accordance to the FERC posted rules.
3.Charge Code Requirements
3.1Business Rules
Bus Req ID / Business Rule1.0 / FERC Mandated Interest on Re-Runs is the interest charge/payment on under/overpayment as a result of a Re-Run where the CAISO was ordered to calculate and distribute interest to Business Associates affected by the Re-run.
2.0 / The rate used to determine FERC Mandated Interest on Re-runs is a quarterly compounded interest rate posted on the FERC website.
3.0 / The interest rate is applied to the net change (delta) in Settlement amount between the original Bill Period being re-run and the new, recalculated amount for the Bill Period by Business Associate.
4.0 / FERC Mandated Interest on Re-runs is only calculated for re-runs where FERC has mandated that interest be calculated.
5.0 / The same Billing Period may have more than one re-run associated with it and some of those re-runs may have FERC Mandated Interest on Re-Runs while others may not.
6.0 / A Bill Period that is re-run with FERC Mandated Interest on Re-Runs may be re-run again without FERC Mandated Interest on Re-Runs calculations.
7.0 / FERC Mandated Interest on Re-runs is applied monthly and appears on the monthly Rerun Invoice.
8.0 / Though FERC Mandated Interest on Re-runs is applied monthly, a re-run may cover an hour, a day, or several months.
9.0 / FERC Mandated Interest on Re-runs is manually calculated outside the Settlement system and uploaded as a direct PTB.
10.0 / Re-runs with FERC Mandated Interest must be calculated using only updated rates, quantities, etc. applicable to the re-run where FERC has mandated that interest be calculated.
3.2Predecessor Charge Codes
Charge Code/ Pre-calc NameNone
3.3Successor Charge Codes
Charge Code/ Pre-calc NameNone
3.4Inputs – External Systems
Row # / Variable Name / Description1 / PTBFERCRerunInterestSettlementAmountBU’Um / Manually calculated FERC Rerun Interest Settlement Amount by BA (B), Bill Period Start (U’), Bill Period End (U) and month.
3.5Inputs - Predecessor Charge Codes or Pre-calculations
Row # / Variable Name / Predecessor Charge Code/Pre-calc Configuration
1 / None
3.6CAISO Formula
3.6.1FERCRerunInterestSettlementAmount BU’Um=PTBFERCRerunInterestSettlementAmount BU’Um
3.7Outputs
Output Req ID / Name / Description1 / In addition to the outputs below, all inputs shall be included as outputs.
2 / FERCRerunInterestSettlementAmountBU’Um / The amount in dollars paid or charged to a BA for FERC Mandated Interest on Re-runs by Trading Month. This amount appears on the Statement and Invoice.
4.Charge Code Effective Date
Charge Code/Pre-calc Name / Document Version / Effective Start Date / Effective End Date / Version Update Type
FERC Mandated Interest on Re-runs (CC 5999) / 5.0 / 04/01/09 / Open / Documentation Edits Only
CAISO, 2018 / Page 1 of 6