Configuration Guide for: CC 1407 -MSS Positive Deviation Penalty / Date: 1104/150/132
Settlements and Billing
Configuration Guide:MSS Positive Deviation Penalty
CC 1407
Version 5.21
CAISO, 2018 / Page 1 of 9Settlements and Billing / Version: 5.21
Configuration Guide for: CC 1407 -MSS Positive Deviation Penalty / Date: 1104/150/132
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
3.7Output Requirements
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 CC 1407 – MSS Positive Deviation Penalty configuration is associated with settlement charge groups as follows:
Charge Code / Charge Group / Parent Charge Group1407 / MSS_DEVIATION_PNLTY / HASP_RT_STLMT
The Metered Subsystem (MSS) Positive and Negative Deviation Penalty (DP) Settlement charges (CC 1407 and 2407 respectively) are intended to discourage Load Following Metered Subsystems from deviating from their forward schedules and/or any CAISO instructions. These charges should result in increased predictability of MSS Generators and improved operational stability of the CAISO.
The MSS Operator may elect to operate a System Unit, or Generating Units in the MSS to follow its Load, provided that:
(a)the Scheduling Coordinator for the MSS Operator shall remain responsible for purchases of Energy in accordance with the CAISO Tariff if the MSS Operator does not operate its System Unit or Generating Units and schedule imports into the MSS, to match the metered Demand in the MSS and exports from the MSS; and
(b)if the deviation between Generation and imports into the MSS and Metered Demand and exports from the MSS exceeds the MSS Deviation Band then the Scheduling Coordinator for the MSS Operator shall pay the additional amounts as indicated below.
The Scheduling Coordinator for a Load-following MSS Operator shall pay amounts for:
(a)excess MSS Generation supplied to the CAISO Markets and
(b)excess MSS Load relying on CAISO Markets and not served by MSS generating resources.
Where an MSS has elected net Settlement, where all resources inside the MSS are Load following, the Load following resources in an MSS aggregation but outside the MSS are subject to the rules for all Load following resources and settled in CC 1407 and 2407. If there are any Non-Load following resources in an MSS aggregation but outside the MSS, these resources are subject to the resource-specific Uninstructed Deviation Penalty (UDP) calculated under CC 4480 and CC 4470. For elections of gross Settlement, where some resources within the MSS are not Load following, the Non-Load following resources are subject to resource specific UDP calculated under CC 4480 and CC 4470. Therefore, whether net or gross Settlement is elected by the MSS Operator, Load following resources are exempt from the resource-specific UDP.
If the MSS has elected not to follow Load, the CC 1407 MSS Positive Deviation Penalty and CC 2407 MSS Negative Positive Deviation Penalty Charge Codes do not apply, and all resources under the MSS are subject to CC 4480 and CC 4470 Uninstructed Deviation Penalties like any other resource.
Regardless of the election of net or gross Settlement, the CAISO Settlements calculates both the positive and negative deviation Billable Quantities for each MSS that has elected (annually) to follow Load in accordance with their MSS agreement and CAISO Tariff. The calculations for those Billable Quantities are detailed in the BPM for Compliance Monitoring.
Revenues collected from the MSS Deviation Penalty (DP) Charge Codes are used as an off-set to the CAISO’s Grid Management Charge. Accounting and tracking of this amount is accommodated by a CAISO MSS DP Trustee Account
2.2Description
If metered Generation and imports into the MSS exceed the metered Demand and exports from the MSS as well as the Energy excepted to be delivered by more than the MSS Deviation Band, then the payment for excess Energy outside of the MSS Deviation Band is rescinded. This rescinded amount is the MSS Positive Deviation Penalty Settlement charge. The amount is calculated by the Settlements System on a 10-minute Settlement Iinterval basis against a single identifier that represents the portfolio of Load Following MSS resources.
The CAISOSettlements calculates the positive deviation Billable Quantity by means of the predecessor configuration MSS Deviation Penalty Quantity Pre-Calculation. Tand the penalty Settlement Amount is then calculated as the product of a MSS-specific Penalty Price for positive deviations, which is the highest Settlement Interval Real-Time LMP paid to the MSS Operator for its Generation in the Settlement Interval,and the positive deviation Billable Quantity. Penalty amounts are summed to the Business Associate total level for presentation on the Settlement Statement.
3.Charge Code Requirements
3.1Business Rules
Bus Req ID / Business Rule1.0 / The Settlements System automatically calculates the MSS Positive Deviation Penalty Settlement Amounts on a 510-minute Settlement iInterval basis.
2.0 / The MSS Positive Deviation Penalty Settlement Amounts are calculated at a System Unit level. the MSS level for athe specific MSS Operator.
3.0 / The MSS Positive Deviation Penalty Settlement Amounts are summed to the Business Associate that is the MSS Operator for the Settlement Statement.
4.0 / No Settlement Amount will be calculated if the maximum Settlement Interval Real-Time LMPs paid to the MSS Operatorresults in a negative Penalty Price.
5.0 / The MSS Positive Penalty Price is determined as maximum of 0 or the highest Settlement Interval Real Time LMP paid to the MSS Operator for its Generation in the Settlement Interval.
5.1 / In the calculation of the MSS Positive Price, only those Settlement Interval Real Time LMPs forLoad Following Generators associated with a given MSS Operator are considered.
6.0 / The CAISO Settlements applies all applicable exemptions, other than those specifically stated in the exemptions document.
7.0 / 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 NameRT Price Pre-calculation
MSS Deviation Penalty Quantity Pre-Calculation
3.3Successor Charge Codes
Charge Code/ Pre-calc NameNone
3.4Inputs – External Systems
Row # / Variable Name / Description1 / MSSDPPositiveFactormd / In Standing Data, a multiplier used to determine the degree of penalty associated with Positive Deviations for a MSS. This value is currently equal to 1.0
2 / NullException / In Standing Data as exception data, the input = 0 with values for all attribute positions missing (NULL). The input will result in an exception being raised (precluding a calculation in which it is used from occurring) for variables with a matching (NULL) attribute combination over all consumed attribute positions. For instance in the formula MSSPositivePenaltyPrice M’mdhcif = GETMAXBYATTR [MSSLAPPositiveDeviationPositivePrice BrtM’mdhcif ], where GETMAXBYATTR is a function that returns the maximum value of the function’s argument over all of its attributes other than attribute M’, all attributes other than M’ are consumed in the function’s calculation, and if they are all NULL, the associated value for MSSLAPPositiveDeviationPositivePrice BrtM’mdhcif will not be used in the calculation.
32 / PTBChargeAdjustmentMSSNegativeDeviationSettlementAmount BJmdhcif / PTB adjustment variable for this charge code, as an amount (in $)for a givenper BAA B. ($).
3.5Inputs - Predecessor Charge Codes or Pre-calculations
Row # / Variable Name / Predecessor Charge Code/ Pre-calc Configuration1 / MSSPenaltySettlementIntervalRealTimeLMPBrtM’mdhidhcif / RT Price Pre-calculation
2 / BA10MMSSPositiveDeviationQuantity BM'mdhidhcif / MSS Deviation Penalty Quantity Pre- Calculation
CAISO, 2018 / Page 1 of 9
Settlements and Billing / Version: 5.21
Configuration Guide for: CC 1407 -MSS Positive Deviation Penalty / Date: 1104/150/132
3.6CAISO Formula
The ISO formula for each MSS System Unit is as follows:
3.6.1MSSPositiveDeviationPenaltySettlementAmountBM’mdhidhcif=
BA10MMSSPositiveDeviationQuantity BM'mdhidhcif*MSSPositivePenaltyPriceM’mdhidhcif
)
3.6.2MSSPositivePenaltyPrice M’mdhcif =And
MSSPositivePenaltyPrice M’mdhi =
GETMAXBYATTR [MSSLAPPositiveDeviationPositivePrice BrtM’mdhidhcif]
Note:
The GETMAX function will select the highest LMP for MSS Subgroup M’ for each Settlement Interval. Use null exception bill determinant to make GETMAX function to work; the null exception bill determinant will be applied in the calculation to all attributes other than attribute M’.
3.6.2.1MSSLAPPositiveDeviationPositivePrice BrtM’mdhidhcif=
(max(0,MSSPenaltySettlementIntervalRealTimeLMP BrtM’mdhidhcif )) *
MSSDPPositiveFactor md
3.7Output Requirements
Row # / Name / DescriptionIn addition to any outputs listed below, allinputs shall be included as outputs.
1 / MSSPositiveDeviationPenaltySettlementAmountBM’mdhidhcif / The amount (in $),in dollarsthat for the Business Associate B for a MSS Subgroupgiven Settlement Interval andMSS Subgroup, that is chargedM’ must pay for positive MSS deviations outside of the associated MSS Deviation Tolerance Band.
2 / MSSPositivePenaltyPriceM’mdhidhcif / The price (in $/MWh) charged for positive MSS Deviation,Penalty Priceby Business Associate Id B, Resource Id r, Resource Type t, for a given MSS Subgroup M’ forand Settlement Interval i.
3 / MSSLAPPositiveDeviationPositivePrice BrtM’mdhidhcif / MSS LAP Positive Deviation Positive Price (in $/MWh as a decimal number >=0) for a given Settlement Interval and resource of a by Business Associate Id B, Resource Id r, Resource Type t for a MSS Subgroup M’ in Settlement Interval. i
4.Charge CodeEffective Date
Charge Code/Pre-calc Name / Document Version / Effective Start Date / Effective End Date / Version Update Type
CC 1407 – MSS Positive Deviation Penalty / 5.0 / 04/01/09 / 09/30/12 / Documentation Edits Only
CC 1407 – MSS Positive Deviation Penalty / 5.1 / 10/01/12 / Open03/31/14 / Documentation Edits and Configuration Impacted
CC 1407 – MSS Positive Deviation Penalty / 5.2 / 04/01/14 / Open / Configuration Impacted
CAISO, 2018 / Page 1 of 9