Fortress Power | Envy Inverter 12 kW | 10 Year Warranty
Overview
The Fortress Power Envy True 12 kW inverter is an all-in-one home energy solution delivering 12 kW output with 21 kW PV input (expandable up to 120 kW with 10 units). Compatible with any Fortress Power 48V battery, it offers seamless power through a 200A AC passthrough for off-grid, grid-tied backup, net metering, and load-shifting. Approved by utilities across the U.S. and Canada, it helps lower bills and earn payments by exporting energy during peak demand. Perfect for energy independence and outage protection.
Key Features:
- 200A AC Passthrough for Whole Home Backup
- 3 MPPT Output for Maximum 21 KW PV Array
- AC, DC, and AC/DC Combined Coupling
- IP65 Rated for Indoor & Outdoor Installation
- Built-In Generator Input
- Up to 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 One-Line Diagram
Specifications
| 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 |
| Efficiency | |
| MPPT Efficiency | 99.9% |
| Max. Efficiency | 97.5% |
| CEC Efficiency | 96.5% |
| Protection | |
| Anti-islanding Protection | YES |
| DC Switch | YES |
| Ingress Protect Degree | NEMA 4X, IP65 |
| SPD Protection | YES |
| AFCI | OPT |
| 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 |
Manuals and Downloads
Envy True 12 Inverter – Data Sheet
Envy True 12 Inverter – Manual
Envy Battery-Inverter Integration Guide
Fortress Power System Design Tool
Envy True 12 Inverter – Warranty Letter
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We do not sell any used or refurbished items.
Frequently Asked Questions
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