Defined term
Reactive power
Reactive power is the portion of electricity that establishes and sustains the electric and magnetic fields of alternating-current equipment.
grid · Concept code GS-CONCEPT-191 · Last verified August 28, 2026
Evidence through 2023-08-29 · 1 source has no source-event date
Content modified 2026-08-28
Definition and decision context
Definition
Reactive power is the portion of electricity that establishes and sustains the electric and magnetic fields of alternating-current equipment.
Applicable jurisdiction: US
Verified August 28, 2026
Why it matters
In SDG&E Rule 21, reactive-power functions appear in a smart-inverter settings context; that tariff context does not establish a universal active-supply setting.
Applicable jurisdiction: US-CA
Verified August 28, 2026
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Primary topic: Grid
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Primary sources
- U.S. Energy Information Administration: EIA Glossary — Reactive power
Source event date unavailable · Ontology accessed August 28, 2026 · Ontology verified August 28, 2026
- San Diego Gas & Electric: SDG&E Electric Rule 21 § Hh.2.i–j, Sheet 140, Advice Letter 61645-E/AL4280-E, submitted 2024-01-11, effective 2023-08-29
Revision 61645-E/AL4280-E · Source event as of August 29, 2023 · Ontology accessed August 28, 2026 · Ontology verified August 28, 2026