Sunways inverters in this category include three-phase, hybrid devices designed for residential and smaller commercial solar systems. The STH series aims to manage solar power generation and energy storage within a single integrated system.

The range covers a power output of 4–12 kW, making it well-suited for average family homes, properties with higher consumption, or small businesses. The hybrid design allows for battery connection, so the generated energy can be used not only for immediate consumption but also for later storage.

Sunways STH inverters are specifically designed to work with the Sunways modular battery system, ensuring simpler system design and expandability. The three-phase design allows for stable grid operation, especially where consumption is distributed across multiple phases.