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Fortress Power

Fortress Power - 48v Envy Inverter 12kW

Fortress Power - 48v Envy Inverter 12kW

SKU: Envy Inverter 12 kW

Regular price $6,259.00
Regular price Sale price $6,259.00
Sale Temporarily Out of Stock

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Fortress Power - Envy Inverter 12 kW

The Fortress Power Envy True 12 – a whole-home, all-in-one 12kW 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 200A AC passthrough providing up to 12kW (50A @ 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 3 MPPT output allowing for a maximum of 21 kW PV  array. The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with Pre-built AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access  your system from anywhere.

Key Features:

  • 200A AC Passthrough Current For Whole Home Backup
  • 3 MPPT Output For Max. 21 KW PV Array
  • AC, DC And AC/DC Combined Coupling
  • IP65 Rated For Indoor & Outdoor Installation
  • Built-In Generator Input
  • 10 Units In Parallel
  • Local And Remote Monitoring/App
  • Color LCD Touch Screen
  • Batch Settings

Supported Applications:

  • Backup
  • Off-Grid
  • Zero Export
  • Time-Of-Use
  • Peak Shaving
  • Demand Response Integration (Coming Soon)

Whole-Home Backup / AC Passthrough One-Line Diagram

Fortress Power Envy True 12 One Line Diagram


    Input DC (PV Side)
    Max. DC Input Power for Single MPPT 12000W/7000W/7000W 1 x 12kW, 2 x 7kW
    Max. PV Input Power 21000W
    Max. PV Power Delivered to Battery & AC Outputs 18000W
    DC Input Voltage Range 100V-600V
    Nominal DC Input Voltage 360V
    Full Power MPPT Voltage Range 230V-500V
    Max. DC Input Current 25A/15A/15A
    MPPT Number/(Strings per MPPT) 3(2/1/1)
    Output/Input AC (Grid)
    Continuous AC Power to Grid 12000W (240V)
    Continuous AC Power to Load with Grid or Generator 48000W (240V)
    Nominal Output Voltage 120V/240V
    Max. Continuous AC Current 50A @ 240V
    Nominal AC Frequency 50Hz/60Hz
    Output AC (Off-Grid)
    Max. Output Power 12000W (240V)
    Nominal Output Voltage 120V/240V
    Nominal Output Frequency 50Hz/60hZ
    Nominal Output Current 50A @ 240V
    Peak Power 14kW 10 minutes / 16kW 5 minutes / 20kW 500ms
    Switching Time Seamless
    Battery Parameters
    Compatible Battery Type eVault Max, eFlex, LFP-10 MAX
    Nominal Battery Voltage 48V
    Battery Voltage Range 48V-56V
    Maximum Charging/Discharging Current 250A
    Maximum Charging/Discharging Power 12000W
    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
    RSD Built-in APsmart Transmitter
    General Data
    Dimensions 31.1 x 20.5 x 10.4 in (790 x 520 x 264 mm)
    Weight 127 lbs (58 kg)
    Display Color LCD
    Ambient Temperature Range -20 to 60 °C (-4 to 140 °F)
    Cooling FAN
    Communication RS485/Wi-Fi/CAN
    Standard & Certification
    Certifications UL1741, UL1741SB, IEEE1547A, Rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma
    Warranty 10 Years / Lead Acid or Fortress Lithium Batteries Only



    Envy True 12 Inverter – Data Sheet

    Envy True 12 Inverter – Manual

    Envy Battery-Inverter Integration Guide

    Fortress Power System Design Tool

    Envy Inverter Monitoring Setup Guide

    OGPe Certification



    Warranty information may vary depending on the manufacturer, so please refer to the individual product pages for details. It's important to note that warranties cover damages that occur over time and from use. If an item arrives damaged and is not reported within 30 days, it is not considered a warranty claim.

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