Overview
The Fortress Power Envy 8kW and 10kW are all-in-one inverter solutions designed for whole-home backup power. When paired with Fortress Power eFlex 5.4 kWh, eVault MAX 18.5 kWh, or LFP-10 MAX batteries, the Envy offers a 90A AC passthrough, providing up to 8kW (33.3@ 240V) or 10kW (41.6A @240V) of backup power. It includes a built-in generator input with AC/DC coupling, catering to both on- and off-grid setups. The Envy features a 2 MPPT output, allowing for a maximum PV array of 13 kW (Envy 8kW) or 15kW (Envy 10kW). Equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, as well as integrated AC & DC breakers, the Envy ensures fast installation and commissioning. Monitor your system remotely using our online monitoring app.
Key Features:
- IP65 rated for both indoor and outdoor installations
- 2 MPPTs output:
- Maximum input of 13KW PV array for Envy 8kW
- Maximum input of 15KW PV array for Envy 10kW
- Maximum input of 13KW PV array for Envy 8kW
- AC, DC, and AC/DC combined coupling
- Built-in generator input
- Supports up to 10 units in parallel
- Local and remote monitoring/app access
- Color LCD touch screen
- Batch settings
Supported Applications:
- Backup
- Off-Grid
- Zero Export
- Time-Of-Use
- Virtual Power Plant
- Peak Shaving
- Net Metering
- Smart Load
- Microgrid
Whole-Home Backup One-Line Diagram
Specifications
| Envy 8kw | ||
| Input DC (PV Side) | ||
| Max. DC Input Power for Single MPPT | 6000W / 6000 W | 6000W / 6000 W |
| Max. PV Input Power | 13000W | 15000W |
| Max. PV Power Delivered to Battery & AC Outputs | 12000W | 12000W |
| DC Input Voltage Range | 100V-600V | 100V-600V |
| Nominal DC Input Voltage | 360V | 360V |
| Full Power MPPT Voltage Range | 170V-500V | 210V – 500V |
| Max. DC Input Current | 25A / 25A | 25A / 25A |
| MPPT Number/(Strings per MPPT) | 2 / 2 | 2 / 2 |
| Output/Input AC (Grid) | ||
| Continuous AC Power to Grid | 8000W (240V) | 10000W (240V) |
| Continuous AC Power to Load with Grid or Generator | 21000W (240V) AC Passthrough/ 12000W (240) GEN | 21000W (240V) AC Passthrough/ 12000W GEN |
| Nominal Output Voltage | 120V/240V | 120V/240V |
| Max. Continuous AC Current | 33.3A @ 240V | 41.6A @ 240V |
| Nominal AC Frequency | 50Hz/60Hz | 50Hz/60Hz |
| Output AC (Off-Grid) | ||
| Max. Output Power | 8000W | 10000W |
| Nominal Output Voltage | 120V/240V | 120V/240V |
| Nominal Output Frequency | 50Hz/60hZ | 50Hz/60hZ |
| Nominal Output Current | 33.3A @ 240V | 41.6A @ 240V |
| Peak Power | 16kW / 500ms | 20kW / 500ms |
| Switching Time | Seamless | Seamless |
| Dedicated Auto-start Generator Port | 50A / 12kW | 50A / 12kW |
| Battery Parameters | ||
| Compatible Battery Type | eVault Max, eFlex, LFP-10 MAX | eVault Max, eFlex, LFP-10 MAX |
| Nominal Battery Voltage | 48V | 48V |
| Battery Voltage Range | 48V-56V | 48V-56V |
| Maximum Charging/Discharging Current | 167A | 210A |
| Maximum Charging/Discharging Power | 8000W | 10000W |
| Efficiency | ||
| MPPT Efficiency | 99.9% | 99.9% |
| Max. Efficiency | 97.5% | 97.5% |
| CEC Efficiency | 96.5% | 96.5% |
| Protection | ||
| Anti-islanding Protection | YES | YES |
| DC Switch | YES | YES |
| Ingress Protect Degree | NEMA 4X, IP65 | NEMA 4X, IP65 |
| SPD Protection | YES | YES |
| AFCI | YES | YES |
| RSD | Built-in APsmart Transmitter | Built-in APsmart Transmitter |
| General Data | ||
| Dimensions | 580 x 490 x 265mm (22.8 x 19.3 x 10.4 in) | 580 x 490 x 265mm (22.8 x 19.3 x 10.4 in) |
| Weight | 44kg (97lbs) | 44kg (97lbs) |
| Display | Color LCD | Color LCD |
| Ambient Temperature Range | -25 to 60 °C (-13 to 140 °F) | -25 to 60 °C (-13 to 140 °F) |
| Cooling | FAN | FAN |
| Communication | RS485/Wi-Fi/CAN | RS485/Wi-Fi/CAN |
| Standard & Certification | ||
| Certifications | UL1741, UL1741SB, IEEE1547A, rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma | UL1741, UL1741SB, IEEE1547A, rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma |
| Warranty | 5 Years (Optional 10 Years) | 10 Years |
Manuals and Downloads
Envy 10kW Inverter – Data Sheet
Envy Battery-Inverter Integration Guide
Fortress Power System Design Tool
Envy Inverter Monitoring Setup Guide
Fortress Power Warranty – Envy 8k (CDBG)
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Guaranteed Purity & Performance
We provide certified gas with 99.9% minimum purity, preventing system contamination and ensuring optimal HVAC function.