Settlements and Billing



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Settlements and Billing

Configuration Guide: CG PC Metered Energy Adjustment Factor

Version Version: 5.14

5.13


Table of Contents

Purpose of Document 4

Introduction 4

Background 4

Description 5

Charge Code Requirements 6

Business Rules 6

Step 1: 6

If the resource’s Effective Day-Ahead Scheduled Energy is greater than or equal to its Day-Ahead Minimum Load Energy, and is greater than zero, then the calculation shall proceed to step two. Otherwise, the calculation shall proceed to step six. 6

Step 2: 6

If (1) the resource’s Metered Energy less Regulation Energy is less than its Day-Ahead Minimum Load Energy less the Tolerance Band; or (2) the resource’s Metered Energy less Regulation Energy is less than or equal to zero, then the Day-Ahead Metered Energy Adjustment Factor shall be set to zero (0). Otherwise, the calculation shall proceed to step three. 6

Step 3: 7

If the absolute value of the result of the resource’s Metered Energy less its Regulation Energy less the Effective Day-Ahead Scheduled Energy, is less than or equal to the Performance Metric Tolerance Band, then the Day-Ahead Metered Energy Adjustment Factor shall be set to one (1). Otherwise, the calculation shall proceed to step four. 7

Step 4: 7

If the resource’s Effective Day-Ahead Scheduled Energy less its Day-Ahead Minimum Load Energy is equal to zero, then the Day-Ahead Metered Energy Adjustment Factor shall be set to one (1). Otherwise, the calculation shall proceed to step five. 7

Step 5: 7

the minimum of (i) the Expected Energy and (ii) the (b) the Effective Day-Ahead Scheduled Energy, less the Day-Ahead Minimum Load Energy. Then, the calculation shall proceed to step six. 7

Step 6: 7

If the resource’s Effective Day-Ahead Scheduled Energy is less than its Day-Ahead Minimum Load Energy and if the resource’s Effective Day-Ahead Scheduled Energy is greater than zero (0), then the resource's Day-Ahead Metered Energy Adjustment Factor shall be set to one (1). Otherwise, the calculation shall proceed to step seven. 7

In cases where both the denominator and numerator produced by this calculation equal zero (0),Step 7: 7

If the Day-Ahead Scheduled Energy is positive and the resource’s Expected Energy is less than or equal to zero, and its Metered Energy is less than or equal to zero, 7

then the resource's Day-Ahead Metered Energy Adjustment Factor willshall be set to one (1); 7

otherwise, the resource's Day-Ahead Metered Energy Adjustment Factor shall be set to zero (0). 7

Step 1:
If the Day-Ahead Pumping Energy is negative and its Expected Energy is negative, then its Day-Ahead Metered Energy Adjustment Factor shall be the minimum of: (A) the number one (1); or (B) the maximum of (i) the number zero (0) and (ii) the ratio of the resource’s Metered Energy and its Expected Energy. Otherwise, the calculation shall proceed to step two. 8

Step 2:
If the denominator produced from this calculation equals zero (0), butDay-Ahead Pumping Energy is negative and the numerator is a non-resource’s Expected Energy is greater than or equal to zero, and its Metered Energy is greater than or equal to zero number, the, then its Day-Ahead Metered Energy Adjustment Factor willshall be be set to one (1). Otherwise, its Day-Ahead Metered Energy Adjustment Factor shall be set to zero (0). 8

Predecessor Charge Codes 13

Successor Charge Codes 14

Inputs – External Systems 14

Inputs - Predecessor Charge Codes or Pre-calculations 17

CAISO Formula 18

Outputs 46

Tariff Mapping / Compliance Matrix 62

Charge Code Effective Date 68




Purpose of Document

The purpose of this document is to capture the requirements and design specification for a Charge Code in one document.


Introduction




Background

Bid Cost Recovery (BCR) is the process by which the CAISO ensures Scheduling Coordinators (SCs) are able to recover Start Up Costs (SUC), Minimum Load Costs (MLC), Transition Costs (TC), and Energy Bid Costs. In order to recover SUC and MLC, a Generating Unit, Pumped-Storage Unit, or resource-specific System Resource must be committed by the CAISO. Likewise, the CAISO must commit a Multi-Stage Generating Resource in order for it to receive TC compensation. Bid Cost recovery for Energy and Ancillary Services (A/S) Bids applies to Bid Cost Recovery Eligible Resources in general (for example, Generating Units, Pumped-Storage Units, Proxy Demand Resources, and System Resources) scheduled or dispatched by CAISO, independent of whether they are CAISO-committed or instead are self-committed.

For purposes of determining BCR eligibility, CAISO uses a concept called Commitment Period. A Commitment Period consists of the consecutive time periods within a Trading Day when a resource is on-line, synchronized to the grid, and available for dispatch. A Commitment Period is comprised of two distinct sub-types --- Self-Commitment Period and CAISO Commitment Period. The portion of a Commitment Period where a resource submits an Energy Self-Schedule or A/S self provision is called a Self-Commitment Period. A Self-Commitment Period may include time periods when a resource is not operating pursuant of an Energy Self-Schedule or A/S self-provision, but must be on due to Ramping Constraints or a minimum up time or minimum down time requirement. Resources are not eligible for BCR of SUC, MLC or TC during Self-Commitment Periods, but are eligible for BCR of awarded Energy and A/S. The portion of a Commitment Period that is not a Self-Commitment Period is called CAISO Commitment Period. Resources are eligible to receive BCR for SUC, MLC, TC, awarded Energy and A/S during a CAISO Commitment Period.

For each resource, the total SUC, MLC, TC, Bid Costs together with the energy and AS bid costs, and market revenues from RUC, and RTM are netted together for each Settlement Interval. If the difference between the total costs and the market revenues is positive in the relevant market, then the net amount represents a Shortfall. If the difference is negative in the relevant market, the net amount represents a Surplus. For each resource or, in the case of a MSS entity that has elected net settlement, all MSS resources collectively, the RUC, and RTM Shortfalls and Surpluses are then netted over all hours of a Trading Day. Net Surpluses from either of the RUC or RTM markets offset any net shortfalls from the RTM or RUC market, respectively, over the entire Trading Day. If the net Trading Day amount is positive (a Shortfall), the Scheduling Coordinator receives a BCR Uplift Payment equal to the net Trading Day amount.

Bid Cost Recovery for resource costs in the IFM, RUC and RTM markets is determined for each Settlement Interval based upon a resource’s performance and delivered energy relative to its Expected Energy. The Metered Energy Adjustment Factor (MEAF) pre-calculation is defined to determine and provide various performance-centric adjustment factors and flags that are used by the pre-calculation’s successor configuration calculations to calculate the resource’s BCR amount.

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