SMA Sunny Highpower Peak3 (SHP 125-US-21) 125KV 480VAC 1500V String Inverter

The SMA Sunny Highpower Peak3 is a powerful three-phase 1500V string inverter designed for utility-scale and large commercial solar installations. Built to deliver exceptional performance, scalability, and reliability, it serves as the central point in your system for converting the DC power from your panels into the AC power used by most lights and standard electronics. With the Highpower Peak3, you’ll be turning sunlight into clean, grid-ready electricity efficiently and safely.

For those building large solar arrays, this inverter balances high capacity with a streamlined design. It reduces installation time, simplifies long-term operation, and keeps maintenance costs low, making it an ideal choice for developers and property owners who want dependable performance without unnecessary complexity.

One of the standout features of the Sunny Highpower Peak3 is how much power it delivers in such a compact form. Its high power density allows installers to pack more capacity into less space, reducing system footprint and overall costs. With a DC input voltage of up to 1500V, this inverter gives engineers more flexibility in designing string layouts, enabling longer strings and fewer connection points, which saves on wiring and combiner hardware.

This 125kW three-phase string inverter is built for 480V AC output and is compatible with three-phase power, a standard for large commercial and utility-scale systems. This ensures smooth grid integration and aligns with standard utility requirements across North America. Whether you’re installing a single inverter or deploying dozens across a large project, the modular Peak3 design makes scaling simple and efficient.

SMA’s Smart Connected service comes built into the Peak3, offering proactive system monitoring and automated fault detection. If an issue occurs, the system can alert both you and SMA immediately, helping reduce downtime and protect long-term energy production. This level of monitoring is especially valuable in large systems where quick response times matter.

The inverter also integrates seamlessly with SMA’s ennexOS energy management platform and Data Manager, giving operators advanced visibility and control. System owners can monitor inverter performance, adjust parameters, and coordinate multiple devices from one centralized interface, which simplifies management of large-scale arrays.

Here’s what makes the SMA Sunny Highpower Peak3 such a strong choice for commercial and utility-grade solar installations:

Durability and serviceability are key design principles behind the SMA Sunny Highpower Peak3. This 1500V inverter is engineered to operate reliably in harsh environmental conditions. Its robust construction, advanced temperature management, and efficient cooling system help maintain consistent performance while reducing overheating risks.

Installation and commissioning are streamlined thanks to simplified connections and intuitive digital tools. This saves installers valuable time on large-scale projects where efficiency matters.

As part of SMA’s commercial product family, the Peak3 benefits from ongoing firmware updates, long-term support, and compatibility with future system expansions. SMA’s global service network also provides access to replacement parts and technical assistance when needed.

If you’re building a large-scale solar installation and want reliable, high-efficiency power conversion with intelligent management tools and easy scalability, the SMA Sunny Highpower Peak3 is a top-tier option. It combines the flexibility of string inverter design with utility-level performance backed by SMA’s decades of engineering expertise.

From its 125kW output and modular structure to its smart monitoring features and streamlined installation process, this inverter is built to keep your solar project running smoothly for years to come. Contact PowerStore today to learn more about this product.