Request a Quote!

  Home > Energy Storage Solutions > Fortress Power >

Fortress Power Envy 8kW > 8,000 Watt 48 Volt All-In-One Solar Inverter
Fortress Power Envy 8kW > 8,000 Watt 48 Volt All-In-One Solar Inverter

Our Price: $5,062.00
Warranty: 10 Years

Product Code: FORTRESS-ENVY-8K

Description Datasheet

Fortress Power > 8kW 48V All-In-One Solar Inverter

Manufacturer Part Number: Envy 8kW

NOTICE: eFlex and eVault batteries will likely need a firmware update when being paired with the Fortress Envy inverter. Software download required. Communication cable provided by Fortress Power upon request. Can be used repeatedly for multiple projects.

The Fortress Power Envy True 8kW a whole-home, all-in-one inverter solution. Paired with the Fortress Power eFlex 5.4 kWh, the eVault MAX 18.5 kWh or LFP-10 MAX batteries, the Envy features a 60A AC passthrough providing up to 8kW (33.3@ 240V) of whole-home backup power. The Envy features a built-in generator input with AC/DC coupling, on- and off-grid capabilities, plus a 2 MPPT output allowing for a maximum of 13 kW PV array (Envy 8kW).

The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with integrated AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access your system from anywhere.

Supported Applications

  • Battery Backup
  • Off-Grid
  • Zero Export
  • Time-of-Use
  • Virtual Power Plant Ready
  • Peak Shaving
  • Net Metering
  • Smart Load
  • Microgrid


Input DC (PV Side)
Max. DC Input Power for Single MPPT 6000 W / 6000 W
Max. PV Input Power 13,000 W
Max. PV Power Delivered to Battery & AC Outputs 12,000 W
DC Input Voltage Range 100V - 600V (550V Max Recommended)
Nominal DC Input Voltage 360V
Full Power MPPT Voltage Range 170V-500V
Max. DC Input Current 25A / 25A
Max. Short Circuit Input Current 31A / 31A
MPPT Number/(Strings per MPPT) 2 / 2
Output/Input AC (Grid)
Continuous AC Power to Grid 8000W (240V), 8000W (208V)
Continuous AC Power to Load with Grid or Generator 14,400W (240V) AC Passthrough/ 12,000W (240) GEN
Nominal Output Voltage 120V/240V, 120V/208V, 208V 3 Phase
Max. Continuous AC Current 33.3A @ 240V, 38.5A @ 208V
Nominal AC Frequency 50Hz/60Hz
Output AC (Off-Grid)
Max. Output Power 8000W (240V), 8000W (208V)
Nominal Output Voltage 120V/240V
Nominal Output Frequency 50Hz/60hZ
Nominal Output Current 33.3A @ 240V, 38.5A @ 208V
Peak Power 16kW / 500ms
Switching Time <20 ms
Dedicated Auto-start Generator Port 50A / 12kW
Battery Parameters
Compatible Battery Type eVault Max, eFlex, LFP-10 MAX, Other Lithium Batteries (Open-Loop), Lead Acid
Nominal Battery Voltage 48V
Battery Voltage Range 40V-60V
Maximum Charging/Discharging Current 167A
Maximum Charging/Discharging Power 8,000W
MPPT Efficiency 99.9%
Max. Efficiency 97.5%
CEC Efficiency 96.5%
Anti-islanding Protection YES
DC Switch YES
Ingress Protect Degree NEMA 4X, IP65
SPD Protection YES
Rapid Shutdown Device (RSD) Built-in APsmart Transmitter
Also Compatible with Tigo Transmitters (refer to manual)
General Data
Dimensions 29.5" x 20.5" x 11.23"
(750 x 520 x 285 mm)
Weight 110 lbs.
(58 kg)
Display Color LCD
Ambient Temperature Range -13 to 140 F (-25 to 60 C)
Cooling Fan
Communication RS485 / Wi-Fi / CAN
Standard & Certification
Certifications UL1741, UL1741SB, IEEE1547A, rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma, SGIP, NOM
Warranty 10 Years / Lead Acid or Fortress Lithium Batteries, other 48v battery manufacturers**

Key Features

  • IP65 Rated For Indoor & Outdoor Installations
  • 2 MPPTs Output For:
    • Max Input 13KW PV Array (Envy 8kW)
  • AC, DC And AC/DC Combined Coupling
  • 120/240V, 120/208V & 208V 3 Phase capable
  • Built-In Generator Input
  • 10 Units In Parallel
  • Local And Remote Monitoring/App
  • Color LCD Touch Screen
  • Batch Settings

Share your knowledge of this product with other customers... Be the first to write a review

Browse for more products in the same category as this item:

Energy Storage Solutions > Fortress Power
Power Inverters > Off Grid Inverters
Power Inverters
Power Inverters > Residential Grid-Tie Battery Backup Inverters
Energy Storage Solutions
Solar and Storage > Solar + Storage NEM
Solar and Storage
Solar and Storage > Promotions