Defined term
Distributed energy resource aggregation
In CAISO's tariff, a Distributed Energy Resource Aggregation is a resource made up of one or more distributed energy resources.
grid · Concept code GS-CONCEPT-212 · Last verified September 29, 2026
Evidence through 2026-05-29 · 0 sources have no source-event date
Content modified 2026-09-29
Definition and decision context
Why it matters
FERC Order No. 2222 addresses DER aggregation participation in RTO/ISO markets and discusses interconnection jurisdiction. For SDG&E customers under Rule 21, an executed interconnection agreement and express written utility permission are separately required before parallel operation.
Review confirmed · Review due October 29, 2026
The previous review deadline was September 27, 2026. The missed interval remains unverified; the current review does not establish historical coverage.
The cited evidence supports this statement within the source’s stated scope. Its jurisdiction and source-event date limit its applicability to a particular project.
Applicable jurisdiction: US
Verified September 29, 2026
Definition
In CAISO's tariff, a Distributed Energy Resource Aggregation is a resource made up of one or more distributed energy resources.
Review confirmed · Review due October 29, 2026
The previous review deadline was September 27, 2026. The missed interval remains unverified; the current review does not establish historical coverage.
The cited evidence supports this statement within the source’s stated scope. Its jurisdiction and source-event date limit its applicability to a particular project.
Applicable jurisdiction: US-CA
Verified September 29, 2026
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Primary sources
- San Diego Gas & Electric: SDG&E Electric Rule 21 § D.1 Authorization Required to Operate; printed tariff Sheet 25; PDF page 24; Cal. P.U.C. Sheet No. 36516-E; Advice Letter 4032-E; effective 2023-08-29
Revision tariff Sheet25, Cal.PUC36516-E, AL4032-E, submitted2022-07-01, effective2023-08-29 · Source event as of August 29, 2023 · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026
- Federal Energy Regulatory Commission: FERC Order No. 2222, § IV.B.3, ¶¶ 117–118, pp. 93–94; 18 CFR § 35.28, issued September 17, 2020
Revision Order No. 2222; 18 CFR § 35.28 · Source event as of September 17, 2020 · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026
- California Independent System Operator: CAISO Fifth Replacement Electronic Tariff, Appendix A — Distributed Energy Resource Aggregation, p. 67, May 29, 2026
Revision Fifth Replacement Electronic Tariff, Appendix A · Source event as of May 29, 2026 · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026