Defined term
Utility distribution system
The utility distribution system is the portion of SDG&E's electric system used to distribute electricity as defined by Electric Rule 21.
grid · Concept code GS-CONCEPT-188 · Last verified August 28, 2026
Evidence through 2023-08-29 · 0 sources have no source-event date
Content modified 2026-08-28
Definition and decision context
Definition
The utility distribution system is the portion of SDG&E's electric system used to distribute electricity as defined by Electric Rule 21.
Applicable jurisdiction: US-CA
Verified August 28, 2026
Why it matters
Rule 21 separates the distribution system from distribution upgrades, so the term alone does not establish feeder capacity, site capacity, or a project's interconnection result.
Applicable jurisdiction: US-CA
Verified August 28, 2026
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Primary sources
- San Diego Gas & Electric: SDG&E Electric Rule 21 § C Definitions — Distribution System, Sheet 15, Advice Letter 36506-E/4032-E, effective 2023-08-29
Revision SDG&E Rule 21 Advice Letter 365xx-E/4032-E; effective 2023-08-29 · Source event as of August 29, 2023 · Ontology accessed August 28, 2026 · Ontology verified August 28, 2026
- San Diego Gas & Electric: SDG&E Electric Rule 21 § C Definitions — Distribution System and Distribution Upgrades, Sheet 15, Advice Letter 36506-E/4032-E, effective 2023-08-29
Revision SDG&E Rule 21 Advice Letter 365xx-E/4032-E; effective 2023-08-29 · Source event as of August 29, 2023 · Ontology accessed August 28, 2026 · Ontology verified August 28, 2026