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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.

I

Term/Acronym	Definition
IDR	Interval Data Recorder
IOU	Investor Owned Utilities
IPP	Independent Power Producers
IDR Data Threshold	The percentage of IDR data by MRE that must be available before ERCOT will calculate a True-Up Settlement as set forth in Protocols Section 9.2.6, True-Up Statement.
IDR Mandatory Installation Threshold	The kW (kVA) level at which the installation of interval data recorders are required for settlement purposes as set forth in Protocols Section 18.6.1, Interval Data Recorder Installation and Use in Settlement.
IDR Optional Removal Threshold	The kW (kVA) level at which an interval data recorder may be removed as set forth in Section 18.6.7, IDR Optional Removal Threshold.
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.
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.
Interval Data Recorder (IDR)	Metering Device that is capable of recording Load usage in each Settlement Interval in accordance with Section 9, Settlement and Section 10, Metering
Invoice	Settlement Invoice A notice for payment or credit due rendered by ERCOT based on data contained in Initial, Final, True-Up or any Resettlement Statements. TCR Invoice An invoice issued to a successful bidder based on a final round of a TCR auction.
Invoice Recipient	Market Participants that receive an Invoice from ERCOT.