Quad Fortress Envy Duo 21 Hybrid Solar Kit | 48kW 120/240V | 36.8kW Solar | 128kWh Battery
Price range: $67,828.00 through $73,128.08A solar kit built around four Fortress Envy Duo 21 hybrid inverters.
- 48 kW continuous 120/240V split-phase output
- Solar: 92 × 400W panels (36.8 kW DC)
- Storage: 128 kWh (8 × 16 kWh Wall/Floor-Mount) Fortress eBoost 16 kWh LiFePO4 with eWay mounts
- Optional Tigo rapid shutdown or Tigo optimizers
- Exports solar where your utility allows
Racking sold separately.






