Defined term

Solar-storage islanding

Solar-storage islanding is an intentional operating mode in which approved equipment isolates selected local loads from the utility grid and supplies them from local generation or storage.

Also known as intentional island mode

technology · Concept code GS-CONCEPT-053 · Last verified August 20, 2026

Definition and boundaries

Definition

Solar-storage islanding is an intentional operating mode in which approved equipment isolates selected local loads from the utility grid and supplies them from local generation or storage.

Definition claim verification: Verified August 20, 2026

In plain language

When a proposal mentions Solar-storage islanding, identify the exact equipment, configuration, and included work instead of assuming the label describes the whole system.

What it is not

It is not uncontrolled backfeeding and it does not mean a normal grid-tied solar system will power a home during an outage.

Decision context

Why it matters

Isolation, transfer, grounding, inverter controls, load balance, restart, interconnection approval, and equipment listing determine whether the mode is available and safe.

Decision-context claim verification: Verified August 20, 2026

Information boundary

This page provides general educational context, not a site design, production guarantee, utility determination, contract interpretation, legal opinion, tax conclusion, or individualized financial advice. Verify property, equipment, utility, jurisdiction, program, and agreement details before acting.

Concept relationships

Affects

  • Solar battery storagePublished conceptSolar-storage islanding can affect how Solar battery storage is evaluated

Primary sources

What to do next

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