Configuration Guide for: HASP Congestion - AS Non-Spinning Reserve Import Settlement / Date: 04/01/099/27/2013
Settlements & Billing
BPM Configuration Guide:HASP Congestion - AS Non-Spinning Reserve Import Settlement
CC 6721
Version 5.0
CAISO, 2018 / Page 1 of 7Settlements & Billing / Version: 5.0
Configuration Guide for: HASP Congestion - AS Non-Spinning Reserve Import Settlement / Date: 04/01/099/27/2013
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
Under MRTU the hour ahead market and Real-Time pre-dispatch process is combined/simplified into the Hour Ahead Scheduling Process (HASP). Up to T-75 minutes before the start of the Operating Hour, Scheduling Coordinators (SCs) will submit Energy and Ancillary Service (A/S) Bids as well as Self-Schedules for supply resources and imports. Based upon the ISO’s forecasts, HASP will resolve Congestion and Energy imbalances and procure any incremental A/S that may be needed as a result of changes that occurred after the close the Day Ahead Market (DAM). Hourly Energy and A/S awards for pre-dispatched resources are published no later than T-60 minutes before the operating hour. HASP Settlements are applied to import/export schedule changes and A/S imports. Suppliers of awarded A/S in HASP are paid the Ancillary Service Marginal Price under HASP A/S Settlement. Because A/S capacity imports and Energy schedules compete for transmission capacity over the interties, suppliers of awarded A/S capacity imports in HASP will also be charged the Marginal Cost of Congestion based upon the applicable Shadow Price of the Congested intertie. Additionally, Energy does not provide counter-flow for A/S when the demands for transmission capacity are in opposite directions, likewise, A/S does not provide counter-flow for Energy when the demands for transmission capacity are in opposite directions.
2.2Description
This Charge Code applies to Non-Dynamic System Resources for Award and non-contract eligible QSP Non-Spinning Reserve import capacity whenever Congestion is present over the associated intertie constraint on an hourly basis at the resource level. The Settlement Amount is the product of (a) the incremental HASP Non-Spinning Reserve import capacity quantity and (b) the negative of simple average of the 15-minute (Ancillary Service interval) Shadow Prices in the relevant Trading Hour. A congestion hedge (or no congestion charge) applies to TOR/ETC contract usage for the portion of QSP which falls under the remaining entitlement capacity of those particular contracts. For the QSP beyond the entitlement, congestion charges shall be applied.
3.Charge Code Requirements
3.1Business Rules
Bus Req ID / Business Rule1.0 / The Congestion Charge for Non-Spinning Reserve import at a System Resource per hour is the product of (a) the awarded MW plus non-contract eligible QSP hourly capacity of incremental HASP Non-Spinning Reserve AS and the (b) negative of HASP import direction Shadow Price for the intertie constraint associated with the resource for the Trading Hour.
1.1 / <Not used.>
1.2 / If Congestion is present in the export direction, HASP Non-Spin Importers will not be paid nor charged for the counter-flows over the applicable intertie constraint (Fact).
1.3 / Non-contract eligible QSP is the portion of QSP scheduled under contracts but beyond the available rights capacity. (Fact)
1.4 / 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.
2.0 / AS qualified self-provision using ETC/TOR contracts, particularly incremental HASP Non-Spin QSP that are within the remaining capacity entitlement of such contract shall not be charged for congestion. (Fact).
3.0 / This Charge Code must be computed daily on an hourly basis.
4.0 / The formulas adopt the convention that payments made by CAISO to BAs will be negative, while payments received by CAISO from BAs will be positive.
3.2Predecessor Charge Codes
Charge Code/ Pre-calc NameAncillary Services Pre-Calculation
ETC/TOR/CVR Quantity Pre-Calculation
3.3Successor Charge Codes
Charge Code/ Pre-calc NameCC 6774 – Real Time Congestion Offset
3.4Inputs – External Systems
Row # / Variable Name / Description1 / HASPImportShadowPrice a’h / Shadow Price for Intertie_Constraint a’ for Trading Hour h. It is the marginal value of relieving the particular intertie constraint for congestion in the import direction. This is actually a simple average of the 4, 15-minute pre-dispatch shadow prices.
Note: This usually comes in as negative.
2 / PTBChargeAdjustmentHASPNonSpinCongestionAmountBJh / HASP Non-Spin Congestion Amount PTB Pay Charge Adjustment Amount due BA ID B, as identified by PTB ID J, for Trading Hour h.
3.5Inputs - Predecessor Charge Codes or Pre-calculations
Row # / Variable Name / Predecessor Charge Code/ Pre-calc Configuration1 / HASPNonSpinAwardBrtF’S’a’dh / Ancillary Services Pre-Calculation
Attribute d is dropped in the formulas.
2 / HASPNonSpinNonContractEligibleQSPBrtF’S’a’h / ETC/TOR/CVR Quantity Pre-Calculation
3.6CAISO Formula
3.6.1HASP Congestion for Non-Spinning Reserve
HASPNonSpinCongestionAmount BrtF’S’h =
(HASPNonSpinAwardCongestionAmount BrtF’S’h
+ HASPNonSpinQSPCongestionAmount BrtF’S’h )
3.6.1.1Where HASPNonSpinAwardCongestionAmount BrtF’S’h=
(-1) * ( HASPNonSpinAward BrtF’S’a’h) * (HASPImportShadowPrice a’h )
Where Resource Type t = Import
Note: This filter is redundant as the quantity input is already filtered in AS Pre-calculation.
3.6.1.2Where HASPNonSpinQSPCongestionAmount BrtF’S’h=
(-1) * HASPNonSpinNonContractEligibleQSPBrtF’S’a’h * HASPImportShadowPrice a’h
3.6.2BA total HASP Congestion for Non-Spinning Reserve for Trading Hour h
BAHASPNonSpinCongestionAmount Bh =
HASPNonSpinCongestionAmount BrtF’S’h
Note: This is provided as part of reporting structure and is not configured as an individual charge type. This is shown as a reporting BD in the BD matrix file.
3.6.3CAISO total HASP Congestion for Non-Spinning Reserve for Trading Hour h
CAISOTotalHASPNonSpinCongestionAmount h=
HASPNonSpinCongestionAmount BrtF’S’h
Note: This is provided as part of reporting structure and is not configured as an individual charge type. This is shown as a reporting BD in the BD matrix file.
3.7Outputs
Output ID / Name / DescriptionIn addition to any outputs listed below, all inputs shall be included as outputs.
1 / HASPNonSpinCongestionAmount BrtF’S’h / HASP Non-Spin import Congestion Charge for Business Associate B at resource r, of resource type t, Entity Component Type F’, EntityComponentSubtype S’, for Trading Hour h
2 / CAISOTotalHASPNonSpinCongestionAmount h / Summation of Non-Spin import Congestion Charges by Trading Hour h
3 / PTBChargeAdjustmentHASPNonSpinCongestionAmountBh / HASP Non-Spin Congestion Amount PTB Charge Adjustment Amount due Business Associate B,as identified by PTB ID J, for Trading Hour h.
4 / BAHASPNonSpinCongestionAmount Bh / BA total HASP Congestion for Non-Spinning Reserve Imports for Business Associate B for Trading Hour h
5 / HASPNonSpinAwardCongestionAmount BrtF’S’h / BA HASP Congestion Amount for Awarded Non-Spinning Reserve Imports for Business Associate B at resource r, of resource type t, Entity Component Type F’, Entity Component Subtype S’, for Trading Hour h
6 / HASPNonSpinQSPCongestionAmount BrtF’S’h / BA HASP Congestion Amount for QSP Non-Spinning Reserve Imports for Business Associate B at resource r, of resource type t, Entity Component Type F’, Entity Component Subtype S’, for Trading Hour h.This charge includes ETC/TOR contract usage beyond the rights capacity.
4.Charge Code Effective Dates
Charge Code/Pre-calc Name / Document Version / Effective Start Date / Effective End Date / VersionUpdate Type
HASP Congestion - AS Non-Spinning Reserve Import Settlement (CC 6721) / 5.0 / 04/01/09 / Open3/31/2014 / Documentation Edits Only
CAISO, 2018 / Page 1 of 7