TL;DR
A backup gateway is the control and switching hub of a home battery system that senses a grid outage, disconnects the house from the utility within milliseconds, and forms a local microgrid powered by the battery and solar array. The disconnection, called islanding, is what lets rooftop solar keep producing during an outage, which is otherwise prohibited so panels cannot backfeed lines that workers are repairing.
What it means
A backup gateway is the control and switching hub of a home battery system that senses a grid outage, disconnects the house from the utility within milliseconds, and forms a local microgrid powered by the battery and solar array. The disconnection, called islanding, is what lets rooftop solar keep producing during an outage, which is otherwise prohibited so panels cannot backfeed lines that workers are repairing. It houses the required UL 1741 anti-islanding compliance, meters whole-home flows, and in some products manages which circuits stay energized. Installers mount it at the service entrance between meter and main panel.
Where it sits in the glossary
Backup gateway is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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