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Glossary - i

For your convenience, this page contains an alphabetically organized list of terms, definitions and common acronyms used in the electric utility industry.

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Term/Acronym

Definition

ICCP Inter-Control Center Communications Protocol
IDR Interval Data Recorder
IEL Initial Estimated Liability
IMM Independent Market Monitor
IOU Investor Owned Utilities
IPM Independent Power Marketer
IPP Independent Power Producers
IRR Intermittent Renewable Resources
Inadvertent Energy Account An account maintained by ERCOT to track any differences between deemed meter readings at the DC Ties, based on schedules, and the actual metered values at the DC Tie meters.
Independent Market Monitor (IMM) The Entity selected to monitor the wholesale electric market pursuant to the Public Utility Regulatory Act (PURA), TEX. UTIL. CODE ANN. § 39.1515 (Vernon 1998 & Supp. 2007) and P.U.C SUBST. R. 25.365, Independent Market Monitor.
Independent Organization An independent organization as defined in the Public Utility Regulatory Act (PURA), TEX. UTIL. CODE ANN. § 39.151 (Vernon 1998 & Supp. 2007)
Initial Settlement See Settlement Statement
Inter-QSE Trade Any Energy and Ancillary Services scheduled to or from other QSEs or ERCOT.
Interconnection Agreement An agreement that sets forth requirements for physical connection between an Eligible Transmission Service Customer and Transmission and/or Distribution Service Providers.
Intermittent Renewable Resource (IRR) See Resource
Interval Data Recorder (IDR) A metering device that is capable of recording Load in each Settlement Interval under Section 9, Settlement and Billing, and Section 10, Metering.
Interval Data Recorder (IDR) Meter IDR where the ESI ID is required to be assigned a BUSIDRRQ Load Profile Type code and data is submitted in accordance with Section 10.3.3.3, Submission of Settlement Quality Meter Data to ERCOT.
Interval Data Recorder (IDR) Meter Data Threshold The percentage of IDR Meter data by Meter Reading Entity (MRE), that must be available before ERCOT will perform a True-Up Settlement as set forth in Section 9.2.6, True-Up Statement.
Interval Data Recorder (IDR) Meter Mandatory Installation Requirements The kW (kVA) level at which the installation of IDRs are required for Settlement purposes as set forth in Section 18.6.1, Interval Data Recorder Installation and Use in Settlement.
Interval Data Recorder (IDR) Meter Optional Removal Threshold The kW (kVA) level at which an IDR Meter may be removed as set forth in Section 18.6.6, Interval Data Recorder Optional Removal.
Invoice A notice for payment or credit due rendered by ERCOT.
Invoice Recipient A Market Participant that receives an Invoice from ERCOT.