Project Update and Summary of

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Project Update and Summary of

Project Priority List (PPL) Activity

March 25, 2020

Project Portfolio UpdateRecent / Upcoming Project Implementations2020 Release TargetsPlanned Project Starts2020 Project Spending ForecastRevision Request Funding Placeholder StatusCost Estimate AccuracyDuration Estimate AccuracyLegendReport ExceptionsPriority/Rank Options for Revision Requests with Impacts

Location of Project Priority List (PPL): http://www.ercot.com/services/projects/index

Project Update Agenda

Recent / Upcoming Project Implementations

2020 March Release – Off-Cycle – 3/1/2020 CompleteNPRR863 Phase 1 – Creation of ECRS and Revisions to Responsive ReserveFFR portion onlyNPRR960 – Phased Approach and Clarifications for NPRR863, Creation of ERCOT Contingency Reserve Service and Revisions to Responsive ReserveNOGRR187 – Related to NPRR863, Creation of ERCOT Contingency Reserve Service and Revisions to Responsive ReserveOBDRR011 – ORDC OBD Revisions for PUCT Project 485512020 April Release – R2 – 3/31/2020 – 4/2/2020 In FlightNPRR928 – Cybersecurity Incident NotificationNPRR929 – PTP Obligations with Links to an Option DAM Award EligibilityNPRR978 – Alignment with Amendments to PUCT Substantive Rule 25.505Partial Implementation – Decommission the following reports:36 Month Resource Capacity ReportEMIL ID: NP3-775-M, Report Type ID: 11481Projected Transmission Constraints for Medium Term PASAEMIL ID: NP3-776-M, Report Type ID: 13041NPRR988 – Correction to Conditions for DAM Award Eligibility for PTP Obligations w/Links to an OptionSCR802 – Enhance Communications of System Inertia

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Note: Projected Go-Live dates are subject to change.

Please watch for market notices as the effective dates approach.

2020 Release Targets – Board Approved NPRRs / SCRs / xGRRs

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Go-live dates can differ from Protocol effective dates – Please refer to market notices for more details

Release targets are subject to change

APPENDIXRed Text: New additions and target release changesStrike-Through Text: Previous target release(a), (b), etc.: Multiple phase release

February2/4 – 2/6April3/31 – 4/2May5/26 – 5/28August8/4 – 8/6October10/13 – 10/15December12/8 – 12/10NPRR873SCR797NPRR877 Ph2NPRR968NPRR943EMIL Web InterfaceNPRR863 Ph1NPRR960NOGRR187OBDRR011SCR802NPRR928NPRR929NPRR978(a)NPRR988NPRR856NPRR884NPRR935(a)OBDRR006SCR803NPRR887NPRR907NPRR985NPRR902NPRR905NPRR951MIS testingSCR804SCR781(a)RRGRR016RRGRR019NPRR936MIS Go-LiveMMS/OS RefreshSCR799NPRR857NPRR863 Ph2NPRR885NPRR917NPRR941NPRR971NPRR986PGRR070(b)SCR781(b)

Project Status Codes NS = Not Started I = Initiation P = Planning E = Execution H = On Hold

R1

R2

R3

R4

R5

R6

3/1

NPRR863 Ph1 – FFRNPRR863 Ph2 – ECRSNPRR935(a) – All changes except Section 4.2.3NPRR935(b) – Section 4.2.3 changesNPRR978(a) – Initial report decommissionsPGRR070(b) – Remaining PGRR languageSCR781(a) – View / Edit capabilitySCR781(b) – Add capability

MMS/OS Upgrade “Chill”

MMS/OS Upgrade “Freeze”

EEENSE

ü ü ü

EEPPPEEE

NovemberOff-Cycle

1/1

Future Year Go-Live Targets

2021

2022

NS NSI PNS NSIIE E

SeptemberOff-Cycle

III P

1/19

E

üü

TBD Items201720182019NPRR702, NPRR829NPRR825(b), NPRR867, NPRR841NPRR904, OBDRR009, NPRR879, NPRR918, NRR935(b), NPRR939, PGRR066, SCR800

ü

CMM Release 2a

1/30

August

October

Q3 RIOO

RARF Go-Live for View/Update

ü üüü

Approved Revision Requests “Not Started” – Planned to Start in Future Months

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Revision RequestTargetStart DateRelease TargetCost EstimateAuthorNPRR936 – CRR Account Holder LimitsTBDTBD$150k-$250kEngieNPRR977 – Create MIS Posting for RUC CancellationsTBDTBD$30k-$40kERCOTSCR799 – ERCOT Outage Study Cases in the System Operations Test Env. (SOTE)May 20202020-R6$150k-$250kOncorNPRR904 – Revisions to Real-Time On-Line Reliability Deployment Price Adder for ERCOT-Directed Actions Related to DC Ties and to Correct Design FlawsTBDTBD$200k-$300kRainbowOBDRR009 – ORDC OBD Revisions for ERCOT-Directed Actions Related to DC TiesTBDTBD$30k-$50kRainbowSCR800 – Addition of DC Tie Ramp to GTBD CalculationTBDTBD$30k-$50kERCOTSCR806 – Adding QSE and DME Information to Disclosure ReportsTBDTBD$65k-$95kERCOTNPRR978 – Alignment with Amendments to PUCT Substantive Rule 25.505TBDTBD$65k-$95kERCOT

Project Initiations – Next 3 Months

Note: Target Start Dates are subject to change.

Based on recent

developments,

ERCOT is evaluating

project capacity.

2020 Project Spending

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2020 PPL Budget = $29.0M

“Potential Demand” represents internal ERCOT projects that have not been fully approved

May actuals not yet availableJune-December forecasts are updated

Revision Request Funding Placeholder Status

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In ERCOT’s 2020/2021 proposed budget, the following amounts are allocated for Revision Request work2020 = $4M2021 = $4MYearly Revision Request Spending Forecast Summary

Project Status20202021YTD Actuals$0.51M-Approved – In-Flight / Complete$2.85M$1.28MApproved – Not Started$0.63M$0.64MRemaining Funding$0.52M$2.08MTotal Allocation$4.00M$4.00M

As of

2

/29/2020

2019 PERFORMANCE STATISTICS

Variance from IA Cost Range – Revision Request Projects

10

Exceeds IA Range

12 Projects

Below IA Range

20 Projects

Within IA Range

17 Projects

If actual spend falls within the IA range the variance is 0

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Actual $ Variance from IA Range

2017

17 Projects

22 Revision Requests

2018

13 Projects

14 Revision Requests

2019

19 Projects

29 Revision Requests

Note:

Graph compares the posted IA cost range with the actual project spend

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Variance from

IA

Duration Range – Revision Request Projects

Exceeds IA Range23 Projects

Below IA Range

1

Projects

Within IA Range25 Projects

10

2017

17 Projects22 Revision Requests

201813 Projects14 Revision Requests

2019

19 Projects

29 Revision Requests

If actual duration falls within the IA range the variance is 0.

Note

: Graph compares the posted IA duration range with the actual project duration

Number of Months from IA Range

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Statistics Report Exceptions- 2018

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TypeRevision RequestsReason for Exclusion from ReportCMM Phase 1aNPRR863, NPRR743, NPRR760, NPRR800Difficult to apply metrics – multiple RRs in a multi-phase projectO&M Revision RequestsNPRR659, NPRR846, NPRR562(b), NPRR875, PGRR063, NOGRR167, PGRR042O&M Revision Requests do not have IA estimatesProject Not CompletePGRR057(a), RRGRR015Early releases of projects that are still in flightPartial Scope DeliveredNPRR825(a), NPRR702Partial scope delivered – Remaining scope to be delivered in future projectsCombined with System UpgradeSCR777, NPRR831(b)Small additions to CRR Framework Upgrade project

The following Revision Requests aren’t included in the IA Statistics Report

Statistics Report Exceptions- 2019

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TypeRevision RequestsReason for Exclusion from Report2015 CMM NPRRsNPRR648, NPRR660, NPRR519, NPRR620, NPRR683, NPRR741, NPRR760, NPRR755, NPRR743, NPRR800, NOGRR154Difficult to apply metrics – multiple RRs in a multi-phase projectO&M Revision RequestsNPRR878, OBDRR011, RMGRR156, NPRR916, NPRR912, NPRR909, NPRR923, NPRR889, RMGRR155, RRGRR018 O&M Revision Requests do not have IA estimatesProject Not CompletePGRR057(b), PGRR066, NPRR895, OBDRR007, PGRR070(a), NPRR911, NPRR952, NPRR920Early releases of projects that are still in flightNo Project RequiredPGRR062, NPRR972, PGRR072, NPRR921, NOGRR185, PGRR069Project not required to implement Revision RequestProject to Deliver NPRR866PGRR061This PGRR updated the Annual Load Data Request (ALDR) process so it was timed to coincide with the next occurrence of the ALDR.

The following Revision Requests aren’t included in the IA Statistics Report

Revision Request Project Legend

NPRR785, Synchronizing WGR and PVGR COPs with the Short Term Wind and PhotoVoltaic Forecasts, (E)NPRR808, Three Year CRR Auction, (M)NPRR789, NPRR797 Load Forecast Enhancements, (M)NPRR649, Addressing Issues Surrounding High Dispatch Limit (HDL) Overrides, (E)SCR790, Wind Resource Power Production and Forecast Transparency, (M)NPRR778, Modifications to Date Change and Cancellation Evaluation Window, (M)RMGRR134, Allow AMS Data Submittal Process for TDSP – Read Non-Modeled Generators, (E)NPRR764, QSE Capacity Short Calculations Based on an 80% Probability of Exceedance (P80), (E) NPRR782, Settlement of Infeasible Ancillary Services Due to Transmission Constraints, (E)NPRR746, Adjustments Due to Negative Load, (E)NPRR573, NPRR801, Implementation of NPRR573 & NPRR801, (E)NPRR831, Inclusion of Private Use Networks in Load Zone Price Calculations, (E)RRGRR003, RRGRR006, RRGRR007, RRGRR009, 2016 RARF Enhancements, (V)RMGRR140, Mass Transition/Acquisition Enhancements (MTAQ), (M)NPRR272, Definition and Participation of Quick Start Generation Resources, (E)NPRR744, RUC Trigger for the Reliability Deployment Price Adder and Alignment with RUC Settlement, (E)NPRR758, Improved Transparency for Outages Potentially having a High Economic Impact, (E)NPRR810, Applicability of RMR Incentive Factor on Reservation and Transportation Costs Associated with Firm Fuel Supplies, (E) NPRR830, Revision of 4-Coincident Peak Methodology, (E) SCR792, Enhance Communications of BAAL Exceedances, (E) NPRR854, NOIE TDSP Submittal of Meters with Bidirectional Flow Caused by Generation Interconnected at Distribution Voltage, (M)SCR791, Correction of 60-day SCED GRD Disclosure Report, (M)NPRR844, Clarification to Outage Report, (M)NPRR819, Modification of Non-Price Error Resettlement Thresholds and Resettlement Clean-Ups, (E) SCR795, Addition of Intra-Hour Wind Forecast to GTBD Calculation, (E)NPRR815, Revise the Limitation of Load Resources Providing Responsive Reserve (RRS) Service, (M)NPRR843, Short-Term System Adequacy and AS Offer Disclosure Reports Additions, (E)NPRR776, Voltage Set Point Communication, (E)NPRR864, RUC Modifications to Consider Market-Based Solutions, (M)OBDRR002, NPRR768, Revisions to Real-Time On-Line Reliability Deployment Price Adder Categories, (E)SCR794, Update SCED Limit Calculation, (E)NPRR925, SCR798, PTP Obligation Bid ID Limit, (E)NPRR899, Digital Certificate and User Security Administrator Clarifications and Opt Out Procedure, (E)NPRR914, Addition of Controllable Load Resources to 60-Day Reports, (E)NPRR877, Use of Actual Interval Data for IDR ESI IDs for Initial Settlement - Phase 2, (M)NPRR858, Provide Complete Current Operating Plan (COP) Data, (M)NPRR865, NPRR880, Publish RTM Shift Factors for Hubs, Load Zones, and DC Ties, (M)NPRR866, RRGRR017, RRGRR Related to NPRR866, Mapping Registered Distributed Generation and Load Resources to Transmission Loads in the Network Operations Model, (E)VCMRR022, Determination of Fuel Adder Price for Coal and Lignite Resources, (E)NOGRR174, AVR and PSS Testing Requirements, (M)SCR796, OBDRR003, OBDRR014, Change Validation Rules to Preclude Certain Transactions at Resource Nodes within Private Use Networks, (E)NPRR821, Elimination of the CRR Deration Process, (M)SCR793, SSR Related Telemetry for Transmission Service Provider (TSP) Operators, (M)NPRR842, Study Area Load Information, (E)NPRR845, RMR Process and Agreement Revisions, (E)NPRR809, GTC or GTL for New Generation Interconnection, (M)NPRR817, NPRR847, VCMRR021, Create a Panhandle Hub, (V)NPRR901, NPRR910, OBDRR010, Switchable Generation Resource Status Code, (E)NPRR833, NPRR749, Modify PTP Obligation Bid Clearing Change, (V)

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(E) ERCOT Sponsored

(M) Market Sponsored

(V) Various

Priority / Rank Options for Revision Requests with Impacts

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Revision RequestDescriptionPriorityRankCommentsNPRR998ERS Deployment & Recall Messages20202990Add to end of 2020 list and work into plan without disrupting in-flight projects

Options for…

PPL Rank InformationNext available 2020 Rank in Business Strategy = 2990Next available Rank in Regulatory = 260

Note

Items in the Regulatory

section of the PPL are not tracked against the market Revision Request funding allocation