Electric bill terms: I

Inclining block rate Rate structures

A tiered rate where each block costs more than the block before. It makes high usage more expensive.

Also called: increasing block rate.

See also: Tiered rate.

Income qualified discount Programs and discounts

A monthly discount for customers who meet income or benefit rules, for example Georgia Power IQD-1.

Also called: low-income discount, income-qualified discount.

On this site: ComEd Rate BES / Rate RDS, Eversource (Massachusetts) R-1, Georgia Power R-31, Georgia Power TOU-OA-15, National Grid (Massachusetts) R-1.

See also: CARE.

Infrastructure charge Riders and adjustments

A charge that recovers investment in the grid between rate cases, for example new poles, lines or substations.

Also called: investment recovery mechanism, infrastructure rider.

On this site: Atlantic City Electric RS, AEP Ohio (Ohio Power) RS, AES Ohio RS, The Illuminating Company (Cleveland Electric) RS, Consumers Energy RPM, Consumers Energy RSP and 9 more.

See also: Rate case.

Interconnection Solar and net metering

The approval and the work to connect a solar system or battery to the utility grid.

Also called: interconnection agreement.

See also: Distributed generation.

Interim rate Rate structures

A temporary rate that a commission allows while it decides a rate case. If the final rates are lower, the utility must refund the difference, often with interest.

Also called: interim rates.

On this site: El Paso Electric 01, Montana-Dakota Utilities (North Dakota) 10, Oncor Residential, Xcel Energy (Minnesota) A01.

See also: Rate case.

Interim surcharge Riders and adjustments

A temporary charge until the commission makes a final decision.

On this site: Oncor Residential.

See also: Interim rate.

Interval data Meters and usage

Usage data for short periods, for example 15 minutes or one hour, from a smart meter.

Also called: hourly usage.

See also: Green Button.

Investor-owned utility (IOU) Regulators and the industry

A utility that shareholders own. A state commission sets its rates.

Also called: IOU.

See also: Public power, Electric cooperative.

ISO New England Suppliers and the electricity market

The grid operator for the six New England states.

Also called: ISO-NE.

See also: Regional transmission organization (RTO).

← Terms: H · All terms · Terms: K →