Defined term
Volt-Watt control
Volt-Watt is a DER control mode that limits maximum active power as a function of voltage, as described in NREL’s workshop presentation on IEEE 1547-2018 capabilities.
grid · Concept code GS-CONCEPT-194 · Last verified September 29, 2026
Evidence through 2023-08-29 · 0 sources have no source-event date
Content modified 2026-09-29
Definition and decision context
Why it matters
SDG&E Rule 21 places the voltage-active-power function in a named tariff subsection and does not turn the setting into a universal installation instruction.
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
Definition
Volt-Watt is a DER control mode that limits maximum active power as a function of voltage, as described in NREL’s workshop presentation on IEEE 1547-2018 capabilities.
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
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Primary sources
- San Diego Gas & Electric: SDG&E Electric Rule 21 § Hh.2.m and Table Hh-4; printed tariff Sheets 142, 143; PDF pages 151, 152; Cal. P.U.C. Sheet Nos. 37630-E, 37631-E; Advice Letter 4280-E; effective 2023-08-29
Revision tariff Sheet142, Cal.PUC37630-E, AL4280-E, submitted2023-08-29, effective2023-08-29; tariff Sheet143, Cal.PUC37631-E, AL4280-E, submitted2023-08-29, effective2023-08-29 · Source event as of August 29, 2023 · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026
- National Renewable Energy Laboratory: NREL/PR-5D00-85239, slide 22, revised 2023-01-04
Revision NREL/PR-5D00-85239 · Source event as of January 4, 2023 · Ontology accessed September 29, 2026 · Ontology verified September 29, 2026