Examining the technical specifications of a hybrid inverter from both Atess and Sungrowpower reveals distinct approaches to power range and system integration. The comparison focuses on how each brand’s solar hybrid inverter architecture serves different market segments.
Power Range and Product Portfolio
Atess offers a unified HPS series covering 5kW to 150kW, integrating photovoltaic, storage, and grid management into a single unit. Their hybrid inverter line includes the HPS150HV, rated at 150 kW output with 225 kW maximum PV input. Sungrowpower operates a more segmented portfolio. For residential three-phase applications, they provide the RT series (5–10 kW) and T series (15–25 kW). For commercial and industrial use, units like the SH125CX reach 125 kW.
Technical Comparison of Core Specifications
Atess employs a power-frequency transformer-based topology in their HPS series. Efficiency reaches approximately 90%, but the unit provides robust surge tolerance for inductive loads like motors, a clean sine wave output, and strong grid isolation. Sungrowpower universally adopts a transformerless topology across their RT and T series. This yields higher peak efficiencies—98.4% for the SH10RT—but with weaker tolerance to grid fluctuations.
System Flexibility and Backup Capability
Atess configures their solar hybrid inverter with a high-voltage battery range (352–600V for the HPS150). Sungrowpower supports a wider 150–600V range across RT/T series. Both offer sub-10ms seamless switchover for backup power during grid failure. Atess emphasizes remote DG control, while Sungrowpower incorporates 100% unbalanced load support and up to 36.5 kVA peak backup output (SH25T).
Warranty and Application Context
Atess provides warranty options of 3, 5, or 10 years. Sungrowpower offers a standard 10-year warranty for most models. Specifiers should match topology choice to load type: Atess suits industrial settings with motor-heavy loads; Sungrowpower optimizes for pure residential PV self-consumption.
The selection between Atess and Sungrowpower depends on load profile and priority. Atess delivers robust industrial-grade performance with transformer isolation. Sungrowpower provides higher residential efficiency via transformerless design. Both meet core backup and grid support requirements reliably.
