# First UL 3700-compliant plug-in solar microinverter launches in the US

Small-scale solar solutions for renters gain momentum with new safety standards.

- **Source:** [Engadget - Technology News & Expert Reviews](https://brifing.si/source/16dd2da6-3eea-4d1e-b34f-45e846cdf037)
- **Published:** 2026-07-20
- **Topic:** [Business](https://brifing.si/c/business)
- **Original article:** <https://www.engadget.com/2219291/the-first-ul-3700-compliant-plug-in-solar-microinverter-is-now-available-in-the-us/>
- **On Brifing:** https://brifing.si/s/7506aa4e-aab6-4f01-a630-e11e29598aea

## Innovative Energy Solution

Hoymiles' HiFlow Pro microinverter enables solar power usage through standard household outlets. This technology offers an alternative to large-scale solar installations, especially for renters. Several US states have already passed laws supporting this plug-in solar approach.

## UL 3700 Standard

Implemented in December 2025, UL 3700 is North America's first safety standard for 'balcony solar' systems. It addresses safety concerns in small-scale photovoltaic setups, including features to prevent power backfeed during outages that could endanger utility workers.

## Safety First Approach

Microinverters risk backfeeding power into grids during outages, creating hazards. UL 3700 introduces safeguards against accidental overloads and other electrical risks. These standards ensure safer solar energy adoption for residential users.

## Renter-Friendly Solar

Traditional solar panels aren't practical for rental properties. Products like HiFlow Pro work through standard outlets, solving this accessibility challenge. Federal standardization expands adoption potential among apartment dwellers and renters.

## Energy Independence

While plug-in solar can't fully power homes, it reduces grid dependence. The technology offers apartment residents a practical way to lower energy costs and environmental impact without permanent installations.

## Energy Democratization

Hoymiles' innovation contributes to renewable energy accessibility. UL 3700-compliant products make solar power more inclusive. This trend could gain global traction in coming years as urban energy needs evolve.

## Sources covering this story

- https://www.engadget.com/2219291/the-first-ul-3700-compliant-plug-in-solar-microinverter-is-now-available-in-the-us/ — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._