Sol-Ark 8K-48-ST Hybrid Inverter

–13 °F to 131 °FThe Sol-Ark 8K-48-ST String Inverter is an award-winning hybrid inverter that delivers unmatched versatility, resilience, and efficiency for residential and light commercial solar-plus-storage systems. Combining solar, battery, and grid functionality into one streamlined system, the Sol-Ark 8K-48-ST provides seamless power management, rapid response times, and industry-leading efficiency to maximize energy independence and reliability.

• Hybrid string inverter for residential and small commercial solar-plus-storage applications
• Expandable solar input up to 11 kW with dual MPPTs
• Supports AC coupling up to 7 kW with microinverters or string inverters
• 48V battery integration for both lead-acid and lithium-ion chemistries
• 4 ms transfer time for instant off-grid backup power
• EMP, solar flare, and lightning hardened to 2× military standard (MIL-STD-461G)
• Integrated PV DC disconnects, AFCI, GFDI, and rapid shutdown for NEC 2017 compliance
• Peak 97.5% efficiency with 96.5% CEC efficiency rating for superior energy yield

All-in-one design for simplified installation

The Sol-Ark 8K-48-ST combines inverter, charger, and system management functions in a single compact enclosure. With integrated 50A AC breakers, Wi-Fi monitoring, and a color touchscreen display, installers benefit from a faster, cleaner setup with fewer components. Its plug-and-play architecture and built-in sensors enable “one-box” installation for hybrid solar systems of all sizes.

Comprehensive safety and grid compliance

Engineered for modern grid standards, the 8K-48-ST meets UL 1741 SA, IEEE 1547a, and CA Rule 21 requirements. Integrated PV arc-fault detection, rapid shutdown control, and ground fault protection ensure safe operation. The inverter’s transformerless design enhances performance and reduces weight without compromising reliability.

Smart hybrid control and monitoring

The Sol-Ark 8K-48-ST intelligently manages power between solar, grid, and battery sources. With Smart Load control, users can prioritize high-power appliances while conserving battery capacity. Multiple operating modes—including Grid-Tied, Meter Zero, Time-of-Use, and Off-Grid—offer flexibility for any energy strategy. Real-time monitoring and remote software updates are available via built-in Wi-Fi and mobile or desktop apps.

High performance and resilience

With a 9,000 W continuous output (solar or battery) and up to 20,000 VA surge capacity, the 8K-48-ST can handle large startup loads effortlessly. Designed to perform in extreme conditions, it features variable-speed cooling fans, –13°F to 131°F operating range, and an optional EMP-hardened configuration. Its 4 ms transition time ensures uninterrupted power, making it ideal for both grid-interactive and off-grid applications.

Size

17.37" x 9.37" x 28.0"

Weight

75 lb