Solis S6 GR1P5K-S 5KW solar ongrid inverter

Solis S6 GR1P5K-S on-grid solar string inverter.

Product Overview

The Solis S6 GR1P5K-S is a high-performance, single-phase on-grid string inverter designed for residential solar PV systems. Engineered by the global inverter manufacturer Solis, this 5 kW class model offers advanced features including dual MPPT, export-control readiness, and robust protection — making it an excellent choice for rooftop solar installations in India seeking reliable yield, modern grid-tie compatibility and future-proof performance.

With a maximum efficiency of up to 97.7% and a wide MPPT voltage range, this inverter is built to maximise energy harvest from high-efficiency solar modules and bifacial panels—even in variable rooftop orientations. Compact, lightweight and rated for outdoor use (IP66), the S6 GR1P5K-S simplifies installation while offering premium features such as integrated zero-export capability and smart monitoring interfaces.

Whether you’re installing a new 5 kW system or upgrading an existing setup to enhance self-consumption and net-metering output, the Solis S6 GR1P5K-S is engineered to deliver.

Key Benefits

• High energy yield: With a peak efficiency of ~97.7% you get more usable energy from your PV array, reducing pay-back time. 

• Dual MPPT flexibility: Supports two MPPT trackers allowing for different roof orientations (east/west or split-string) or shading management. 

• Export power control ready: Built-in zero-export / power-limiting functionality helps meet net-metering or self-consumption mandates. 

• Robust design for rooftop use: IP66 ingress protection and operating range from -25 °C to +60 °C make it suitable for Indian rooftop conditions. 

• Lightweight & compact: At around 9 kg and dimensions 330×371×161 mm, it is easier to install and service. 

• Smart connectivity: RS-485 interface plus optional WiFi/GPRS for remote performance monitoring and yield tracking.

Technical Specifications

Ideal Application & Installation Notes

• Use case: Perfect for residential rooftop solar systems in the ~5 kW range — typical for single-storey homes or smaller duplex roofs in India.

• Roof design flexibility: With two MPPT inputs, you can split the PV array into east- and west-facing strings or accommodate shading zones, thus maximising annual energy yield.

• Installation advice:

  • Ensure the PV string voltage falls within 90-550 V for optimal MPPT tracking.

  • Locate the inverter in a shaded, ventilated position, ideally wall-mounted — despite robust IP66 rating, moderate ambient temperatures improve lifespan.

  • Provide good earthing/grounding, DC isolation and surge protection as per Indian standards and utility guidelines.

  • Leverage monitoring (via RS485/WiFi) to track system performance, check yield, detect faults early and guard against under-performance.

  • If your state net-metering policy requires zero-export or limited export, configure the inverter’s export-control function accordingly (built-in for the “-S” series).

• Why choose this model: For homeowners or solar installers seeking a reliable, modern 5 kW string inverter with dual MPPT, export capability and high efficiency—this Solis model is a standout. Its build quality and specification align well with Indian rooftop solar conditions (high ambient temperatures, bifacial modules, partial shading scenarios).

Conclusion

The Solis S6 GR1P5K-S offers an excellent blend of performance, flexibility and reliability for residential solar installations. With its high efficiency, dual MPPT configuration, export-control support and robust design for outdoor rooftop environments, it’s well suited for the Indian solar prosumers.