16kW Solar + 19.2kWh Storage Offgrid Kit (Trina Solar + Fortress Power) 

Trina 445W Solar Panels TSM-NEG9R.28-445

Envy Duo 21 Hybrid Inverter

eForce 19.2kWh LFP Battery 

Suitable for Offgrid Only

This Kit Includes

• (36) Trina Solar 445W N-Type Dual Glass Modules
• (1) Fortress Power Envy Duo 21 Hybrid Inverter
• (1) Fortress Power eForce 19.2kWh Battery System
• (1) Fortress Power Guardian Monitoring Hub

This high-output hybrid solar + storage system is built for homeowners and light commercial users who want serious production and true whole-home backup capability. Pairing Trina’s high-efficiency 445W dual-glass modules with the Fortress Power Envy Duo 21 hybrid inverter and eForce 19.2kWh battery, this system delivers scalable, reliable energy with modern monitoring included.

The Envy Duo 21 provides 12kW continuous output and up to 16kW peak, while the eForce battery delivers 19.2kWh of usable storage, making this kit ideal for backup, self-consumption, and energy independence.

Key Benefits

High Solar Production (16.02kW Array)

• 36 × 445W modules = 16,020W DC system size
• Up to 22.8% module efficiency
• N-type i-TOPCon cells for improved long-term output

Whole-Home Backup Power

• 12kW continuous / 16kW peak output
• Supports both 240V split-phase and 208V systems
• Seamless integration with Fortress batteries

19.2kWh Energy Storage

• Modular, stackable LFP battery system
• Up to 8000 cycle life
• Built-in heating and IP65 rating for outdoor durability

Advanced Monitoring Included

• Real-time system tracking via Fortress Guardian
• Monitor SOC, voltage, current, and system performance
• Wi-Fi or Ethernet connectivity

Scalable System Design

• Expand inverter up to 120kW (parallel)
• Expand storage up to 153kWh total

Typical Applications

• Whole-home backup power
• Grid-tied with battery backup
• Off-grid and hybrid systems
• Time-of-use optimization and peak shaving

Product Specifications

Solar Modules – Trina TSM-NEG9R.28 (445W)

Hybrid Inverter – Fortress Envy Duo 21

Battery – Fortress eForce 19.2kWh

Monitoring – Fortress Guardian

Total System Weight

• Panels: 48.06 lbs × 36 = 1,730.16 lbs
• Inverter: 125.71 lbs
• Battery: 487 lbs
• Guardian: 0.8 lbs

Warranty

• Trina Solar Panels: 15-year product / 30-year performance
• Fortress Envy Inverter: 10-year warranty
• Fortress eForce Battery: 10-year warranty