Fortress Power Solo 6.5K Split/Single-Phase Hybrid Inverter

Solo 6.5K Inverter

The Fortress Power Solo 6.5K is a compact, “non-export” hybrid inverter designed for off-grid homes, backup power, and self-consumption applications. It delivers 6.5kW of continuous power and native 120/240V split-phase output without needing external transformers. Unlike the grid-interactive Envy series, the Solo is engineered specifically for energy independence—allowing you to use solar and batteries to power your home while using the grid only as a backup source, without the complexity of selling power back to utility companies.

Why Choose Fortress Solo 6.5K

The Solo 6.5K is the perfect entry-level solution for homeowners who want to “cut the cord” or simply stop relying on the grid for daily power. It is designed for “Zero Export” scenarios, meaning it prioritizes your solar and battery power to run your home and only sips from the grid if absolutely necessary. With its ability to parallel up to 6 units and integrate seamlessly with generators, it offers a scalable path to total energy independence at a much lower price point than fully grid-interactive systems.

Benefits of Fortress Solo 6.5K

• Cost-Effective Independence: Optimized for off-grid and self-consumption, it eliminates the expensive hardware required for grid-selling, providing a more affordable solution for backup power.

• Native Split-Phase Output: Delivers standard 120V and 240V power directly to your breaker panel, easily running household appliances like pumps, dryers, and tools without transformers.

• Massive Solar Charging: Features 2 MPPT trackers with a high-current 140A solar charger, allowing you to charge large battery banks quickly even while powering your home.

• Scalable Power: The system grows with you; you can stack up to 6 units in parallel to create a massive 39kW system capable of powering large estates or small commercial operations.

General Data

• Dimensions (H x W x D): 27.0″ x 16.1″ x 5.5″ (686 x 410 x 140 mm)

• Weight: 47.8 lbs (21.7 kg)

• Enclosure Rating: IP20 (Indoor Use Only)

• Cooling: Active Fan Cooling

• Operating Temperature: 14°F to 131°F (-10°C to 55°C)

• Stackable: Yes (Up to 6 units)