Ercot Market Education

Ercot Market Education

ERCOT MARKET EDUCATION Retail 101 Introductions, Roles and Responsibilities Overview Topics in this lesson . . . Two Basic Definitions Market Relationships Roles and Responsibilities ERCOT

REPs TDSPs PUCT Slide 3 Two Basic Definitions Premise / ESI-ID Two Basic Definitions Premise A Service Delivery Point or combination of Service Delivery Points that is assigned a single identifier for ERCOT

settlement and registration. Metered Unmetered, such as Street Lights Traffic Lights Billboards Electrons R Us Slide 5 Two Basic Definitions

ESI ID Electric Service Identifier The unique identifier assigned to each Premise Used for all retail transactions in ERCOT Enrolling Customers Switching retail providers Retail Electric Provider (REP) Load metering Slide 6 Market Relationships

Market Participants Who are the ERCOT Players? QSE Qualified Scheduling Entities LSE Load Serving Entities

TDSP Resource Entity Transmission and/or Distribution Service Providers Resource Entities Slide 8 Market Relationships Slide 9

Market Relationships Slide 10 Market Relationships Slide 11 Market Relationships Slide 12 Market Relationships

AALoad Load Serving Serving Entity Entity(LSE) (LSE) provides provideselectric electric service serviceto to end-use end-use Customers

Customers Slide 13 Market Relationships Types Types of of LSEs: LSEs: Retail RetailElectric Electric Providers

Providers (AKA (AKACompetitive CompetitiveRetailers) Retailers) Electrical ElectricalCooperatives Cooperatives Municipally-Owned Municipally-OwnedUtilities Utilities

Slide 14 Market Relationships Types Types of of LSEs: LSEs: Retail RetailElectric Electric Providers Providers (AKA

(AKACompetitive CompetitiveRetailers) Retailers) Electrical ElectricalCooperatives Cooperatives Municipally-Owned Municipally-OwnedUtilities Utilities Slide 15

Market Relationships Slide 16 Market Relationships Slide 17 Roles and Responsibilities ERCOT Responsibilities Maintain Reliability of the Bulk Electric System

Ensures generation meets demand Operate transmission grid within established limits Executes Executescompetitive competitivemarkets marketsfor forreliability reliabilityservices services Slide 19 ERCOT Responsibilities

Maintain Registration Database Qualified Scheduling Entity (QSE) ERCOT ERCOTfacilitates facilitates enrollment enrollmentand andswitching switching of

ofretail retailCustomers Customers Retail Electric Provider (REP) Slide 20 ERCOT Responsibilities Settle the Wholesale Markets Adjusted Metered Load (QSE)

Qualified Scheduling Entity (QSE) Retail Electric Provider (REP) Unaccounted For Energy (UFE) Losses Meter Data Slide 21 REP Responsibilities

Service Retail Customers Negotiate competitive contracts with retail Customers Manage retail Customers ESI IDs Act as primary contact for electric service issues Slide 22 REP Responsibilities Meet Financial Responsibilities Pay and/or dispute invoices Buy electricity at wholesale Pay TDSPs for delivery costs

Invoice retail Customers for their monthly usage Slide 23 REP Responsibilities Investigate Customer Switching issues Work with TDSPs and other REPs to resolve inadvertent gains and losses REP #1 REP #2

Slide 24 TDSP Responsibilities Physical System Operations Maintain reliable transmission and distribution system Physically connect Customer Premise to ERCOT grid Maintain metering systems at Customer Premises Resolve power outages Slide 25

TDSP Responsibilities Retail System Operations Establish ESI IDs Facilitate Enrollments and Service Order Requests from REPs Provide ESI ID usage data for ERCOT Settlement and REP billing REP #1 REP #2

Slide 26 TDSP Responsibilities The anatomy of an ESI ID 10xxxxxzzz..zz Where: 10 Placeholder for future

xxxxx Five digit DOE code for TDSP zzz..zz Up to 29 alphanumeric characters assigned by TDSP Slide 27 TDSP Responsibilities

The anatomy of an ESI ID 10xxxxxzzz..zz XXXXX TDSP Name 20404 AEP TX North 03278

AEP TX Central 08901 CenterPoint 13830 Nueces Electric Coop 44372 Oncor Electric Delivery

17699 Oncor/SESCO 03109 Sharyland Utilities 17008 Sharyland Utilities-McAllen

40051 Texas New Mexico Power (TNMP) Slide 28 TDSP Responsibilities Invoice REPs according to tariffs Delivery charges based on usage Discretionary charges Please Pleaserefer referto

toeach eachTDSPs TDSPs website websitefor fordetails details Slide 29 TDSP Responsibilities Investigate Customer Switching issues

Work with REPs to resolve inadvertent gains and losses MarkeTrak MarkeTrak Slide 30 PUCT Responsibilities Public Utility Commission of Texas (PUCT) Provides regulatory oversight ERCOT operations and budget

TDSPs operations and tariffs REP certification / oversight Slide 31 PUCT Responsibilities Public Utility Commission of Texas (PUCT) Provides consumer protection Creates Substantive Rules that govern all other Market Rules and Protocols Maintains Power to Choose website Receives and investigates Customer complaints

Slide 32

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