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Envy Duo 21-US (16KW) + eBoost-16.0 + eWay + eWay Lite
MPN No: Envy Duo 21-US (16KW) + eBoost-16.0 + eWay + eWay Lite
Expected ship date Jun 20 - 27
In Stock
12,910.00
-7%
$11,998.00
Envy Duo 21-US (16KW) + eBoost-16.0 + eWay + eWay Lite
Save $1350 with bundling and free ship.
This Fortress Power bundle is designed for homeowners and installers who need serious storage capacity and flexible system performance. Pairing the Envy Duo 21 hybrid inverter with two eBoost batteries delivers a powerful 32kWh energy storage system capable of supporting whole-home backup, peak shaving, and high-demand loads.
With support for both 240V split-phase and 208V three-phase applications, this system adapts to a wide range of residential and light commercial projects. The included eWay and eWay Lite streamline system communication, wiring, and scalability—making installation cleaner and future expansion simple.
| Specification | Envy Duo 21-US (16KW) | eBoost-16.0 | eWay | eWay Lite |
|---|---|---|---|---|
| Product Type | Hybrid Inverter | Lithium Battery | Integration Hub | Communication Module |
| System Role | Inverter / System Controller | Energy Storage | Wiring + Comms Hub | Battery Communication Expansion |
| Continuous Output Power | 12kW | — | — | — |
| Peak Output Power | 16kW (240V) / 13.8kW (208V) | — | — | — |
| Battery Capacity | — | 16kWh | — | — |
| Battery Quantity | — | 1 (per unit) | — | — |
| Battery Chemistry | — | LiFePO4 | — | — |
| Nominal Voltage | 48V | 48V | — | — |
| Max PV Input | 25kW | — | — | — |
| MPPT Channels | Multiple MPPTs | — | — | — |
| Phase Compatibility | 240V Split-Phase / 208V 3-Phase | — | — | — |
| Scalability | Up to 120kW (parallel) | Stackable | Supports multi-unit systems | Enables expanded comms |
| Integrated Breakers | Yes (AC/DC) | — | — | — |
| Rapid Shutdown Transmitter | Built-in | — | — | — |
| Communication | CAN / RS485 / Ethernet | CAN / RS485 | Centralized system communication | Battery-to-system comms |
| Monitoring | Fortress Monitoring Platform | Integrated via system | Enables system coordination | Extends communication network |
| Installation Type | Indoor / Outdoor Rated | Indoor / Outdoor Rated | Indoor / Outdoor Rated | Indoor |
| Enclosure Rating | NEMA / IP Rated | NEMA / IP Rated | NEMA / IP Rated | — |
| Dimensions (H x W x D) | ~30 x 20 x 10 in | ~40 x 24 x 12 in | ~24 x 18 x 8 in | Compact module |
| Weight | ~126 lbs | ~304 lbs | ~40–60 lbs | ~10–15 lbs |
| Warranty | 10 Years | 10 Years | Manufacturer Standard | Manufacturer Standard |
Fortress Power is a trusted leader in energy storage solutions, delivering high-performance lithium batteries and integrated systems designed for reliability, safety, and scalability. Their products are engineered for seamless installation and long-term performance across residential and commercial energy applications.
Need help with system sizing, compatibility, or a full solar + storage design? Our experts can create a permit-ready, install-ready plan tailored to your project.
Find out more about PowerPlan Solar Design.
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