Fortress Power Envy True 12 kW Whole Home Solar Storage Inverter

Why Choose Envy True 12kW

The Envy True 12kW is the premier choice for homeowners who want “no compromise” energy security. Its massive 21kW solar input capability allows you to install a solar array large enough to power a modern home and charge batteries simultaneously, even on cloudy days. With its 200A pass-through and high surge capacity, it eliminates the expensive and messy rewiring required for “critical loads” panels, making installation cleaner and faster while ensuring your entire home stays online during a blackout.

Benefits of Envy True 12kW

• True Whole-Home Backup: The integrated 200A transfer switch allows the unit to back up your main breaker panel directly, so you don’t have to pick and choose which circuits to save during an outage.

• Maximum Solar Harvest: Features 3 independent MPPT trackers capable of handling up to 21kW of solar, optimizing production even with complex rooflines or shading issues.

• Heavy Load Start-Up: Delivers a robust 20kW surge (500ms) and 16kW for 5 minutes, providing the muscle needed to start central air conditioners, well pumps, and shop tools.

• Generator Integration: A dedicated 90A continuous generator input automatically manages standby generators to recharge batteries or support loads during extended grid failures.

General Data

• Dimensions (H x W x D): 31.1″ x 20.5″ x 10.4″ (790 x 520 x 264 mm)

• Weight: 127 lbs (58 kg)

• Enclosure Rating: IP65 / NEMA 4X (Outdoor Rated)

• Cooling: Active Fan Cooling

• Operating Temperature: -4°F to 140°F (-20°C to 60°C)

• Stackable: Yes (Up to 10 units for 120kW)

Frequently Asked Questions

Q1: What does “True 12kW” mean?

It refers to the unit’s ability to deliver 12kW of continuous power while also offering a 200A pass-through, allowing it to serve as a true whole-home backup solution without needing a separate critical loads panel.

Q2: How is this different from the Envy 10kW?

The Envy True 12kW is physically larger and more powerful. It has 3 MPPTs (vs 2), supports 21kW of solar (vs 15kW), and most importantly, has a 200A pass-through (vs 60A), making it capable of backing up a main panel directly.

Q3: Can it start a 5-ton air conditioner?

Yes. With a surge capacity of 20kW (for 500ms) and 16kW (for 5 minutes), it can successfully start and run most residential 4-ton and 5-ton central A/C units, provided soft starters are installed for best performance.

Q4: Does it work with the Fortress Guardian?

Yes. The Envy True 12kW is fully compatible with the Fortress Guardian IoT gateway, allowing for remote monitoring, firmware updates, and extended warranty eligibility on connected Fortress batteries.

Q5: Can I stack these for a larger system?

Yes. You can parallel up to 10 units to create a massive system with 120kW of continuous AC output and over 200kW of solar input, suitable for large estates or light commercial buildings.

If you have any questions about the item or your order, please feel free to message before purchasing. Thank you!