SMA Sunny Highpower PEAK3 125kW 1,500VDC String Inverter SHP 125-US-21

The SMA Sunny Highpower PEAK3 125-US is a high-power 125kW three-phase string inverter designed around a modular 1,500VDC architecture. Its high power density, compact form factor, and scalable design make it suitable for large PV installations where installation efficiency, system uptime, and centralized plant management are important.

The PEAK3 125-US supports up to 250kWp maximum PV array power, a maximum system voltage of 1,500VDC, and up to 180A maximum operating input current. On the AC side, the inverter delivers 125kW nominal power at 480V three-phase with up to 98.5% CEC efficiency. 

SMA combines the PEAK3 platform with SMA Smart Connected remote service functionality and the ennexOS energy management platform. The inverter's modular architecture is designed to simplify installation and commissioning while reducing balance-of-system requirements and helping maximize plant uptime.

Key Technology

• 125kW Three-Phase Output
  Provides 125kW nominal AC power and 125kVA maximum apparent power for high-capacity PV installations.

• 1,500VDC Architecture
  Supports a maximum DC system voltage of 1,500V, allowing efficient high-voltage PV array design.

• 250kWp Maximum PV Array Power
  Supports up to 250kWp maximum array power, providing substantial DC capacity for optimized system design.

• Wide MPPT Operating Range
  The 125-US model provides an MPPT operating voltage range of 684–1,500VDC with a rated MPP voltage range of 705–1,450VDC.

• 180A Maximum Operating Input Current
  Supports up to 180A of operating DC input current and up to 325A short-circuit input current.

• 98.5% CEC Efficiency
  High conversion efficiency helps maximize energy production across large PV systems.

• SMA Smart Connected
  Remote monitoring and service functionality helps simplify system operation, maintenance, and field service.

• ennexOS Energy Management
  Designed for centralized system control and energy management through SMA's ennexOS platform and SMA Data Manager.

• Integrated Plant Control
  Supports Integrated Plant Control and Q on Demand 24/7 for advanced grid-support functionality.

• Advanced Grid Support
  Supports functions including low/high frequency ride-through, low/high voltage ride-through, Volt-VAr, Volt-Watt, Frequency-Watt, ramp-rate control, and fixed power factor.

• Integrated Surge Protection
  Includes monitored Type 2 surge protection on both DC and AC sides.

• Type 4X Enclosure
  Rugged environmental protection supports demanding outdoor installation conditions.

• 25-Year Design Life
  SMA provides a manufacturer's declaration of a 25-year design life for the PEAK3 platform.

Best Uses

• Large PV Power Plants
  Designed as a modular 1,500V building block for high-capacity photovoltaic installations.

• Distributed String-Inverter Architectures
  Provides a scalable alternative to centralized inverter architectures while maintaining high power density.

• Projects Requiring Centralized Plant Management
  Works with SMA Data Manager and ennexOS for centralized commissioning, control, monitoring, and plant-level management.

• High-Uptime PV Installations
  Modular inverter architecture can help reduce the impact of individual inverter outages compared with single large centralized power-conversion systems.

Product Specifications

High-Density Modular Power Conversion

The SMA Sunny Highpower PEAK3 125-US | 3-125-1500-2-21 combines 125kW AC output, 250kWp maximum array capacity, 1,500VDC architecture, 98.5% CEC efficiency, integrated Type 2 surge protection, advanced grid support, SMA Smart Connected, and a 25-year declared design life in a compact modular inverter platform engineered for large-scale PV systems.

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