Fortress Power Envy True 12kW Home Solar Storage Hybrid Inverter
Fortress Power Envy True 12kW Home Solar Storage Hybrid Inverter
Fortress Power Envy True 12kW Home Solar Storage Hybrid Inverter
Fortress Power Envy True 12kW Home Solar Storage Hybrid Inverter
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Fortress Power Envy True 12kW Home Solar Storage Hybrid Inverter
FP-ENVY-12K
Fortress Power Envy True 12 kW Home Solar Storage Hybrid Inverter
Maximize your solar potential with the Fortress Power Envy True 12 kW Hybrid Inverter, the all-in-one solution for both on-grid and off-grid energy management. This inverter is a game-changer for whole home backup, offering a seamless integration of solar generation, energy storage, and utility power.
- All-In-One solution supporting on/off-grid, AC/DC coupling.
- Whole home 200A AC Passthrough and Backup, ensuring power during outages.
- Max. 18 kW PV power delivered to both battery and AC outputs.
- 3 MPPT outputs for a max 21 kW PV array, enhancing solar capture.
- Supports up to 10 units in parallel for extensive scalability.

Technology and Overview
Equipped with advanced features like integrated AC & DC breakers and a built-in APsmart Rapid Shutdown Transmitter, the Envy True 12 kW simplifies installation and ensures safety and compliance.
Installation and Compatibility Overview
IP65 rated for both indoor and outdoor installation, the Envy True 12 kW offers flexibility in any setup, supporting a range of applications from backup to zero export and smart load management.
Benefits and Applications Overview
With its robust capacity and versatile applications, the Envy True 12 kW is ideal for homeowners seeking reliable, efficient, and intelligent energy management solutions.
Specifications
Specification | Values |
Model No. | Envy True 12 kW |
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 (550V Max Recommended) |
Nominal DC Input Voltage | 360V |
Full Power MPPT Voltage Range | 230V-500V |
Max. DC Input Current | 25A/15A/15A |
Max. Short Circuit Input Current | 31A/19A/19A |
MPPT Number/(Strings per MPPT) | 3(2/1/1) |
Continuous AC Power to Grid | 12000W (240V) / 10400W (208V) |
Continuous AC Power to Load with Grid or Generator | 48000W (240V) AC Passthrough/ 21000W GEN |
Nominal Output Voltage | 120V/240V |
Max. Continuous AC Current | 50A @ 240V |
Nominal AC Frequency | 50Hz/60Hz |
Max. Output Power | 12000W (240V) / 10400W (208V) |
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 | <20 ms |
Dedicated Auto-start Generator Port | 100A Max / 90A Continuous |
Compatible Battery Type | Lithium and Lead Acid Batteries |
Nominal Battery Voltage | 48V |
Battery Voltage Range | 40V-60V |
Maximum Charging/Discharging Current | 250A |
Maximum Charging/Discharging Power | 12000W |
MPPT Efficiency | 99.90% |
Max. Efficiency | 97.50% |
CEC Efficiency | 96.50% |
Anti-islanding Protection | YES |
DC Switch | YES |
Ingress Protect Degree | NEMA 4X, IP65 |
SPD Protection | YES |
AFCI | YES |
RSD | Built-in APsmart Transmitter Also Compatible with Tigo Transmitters (refer to manual) |
Dimensions | 34.2 x 20.5 x 11.2 in (870 x 520 x 285 mm) |
Weight | 127 lbs (58 kg) |
Display | Color Touch LCD |
Ambient Temperature Range | -4 to 140 ° ( -20 to 60 °C) |
Cooling | FAN |
Communication | RS485/Wi-Fi/CAN |
Certifications | UL1741, UL1741SB, IEEE1547A, Rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma |
Warranty | 10 Years / Lead Acid, Lithium Batteries or Fortress Lithium Batteries |
Fortress Power System Design Tool
Plan Smarter. Build Better.
The Fortress Power System Design Tool is an intuitive online platform that helps you design and size complete energy storage systems using Fortress Power batteries and inverters. Whether you're working on a residential backup system, time-of-use optimization, or a full off-grid solution, this tool gives you accurate recommendations based on your energy goals and load profile.
Key Features:
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Quickly size battery banks and inverter systems
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Select from Fortress Power batteries and compatible inverters
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Supports grid-tied, hybrid, and off-grid applications
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Real-time load analysis and performance estimates
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Exportable system summary for quotes and permitting
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Ideal for installers, designers, and energy consultants
Why Use It:
Save time on design work, avoid costly misconfigurations, and present clean, professional system specs to your customers. The Fortress Design Tool ensures compatibility, reliability, and performance — from start to finish.
Click here to go to the design tool:
Why Choose Fortress Power?
Fortress Power, established with a commitment to delivering reliable and innovative energy solutions, has become a trusted name in the renewable energy industry. The company specializes in advanced energy storage systems designed for residential, commercial, and industrial applications.
Fortress Power sets itself apart with cutting-edge lithium iron phosphate (LiFePO4) battery technology, renowned for its safety, efficiency, and long lifespan. These systems provide seamless energy management, ensuring backup power during outages and optimizing energy use for cost savings.
Fortress Power offers industry-leading warranties of up to 10 years on their products, emphasizing their dedication to quality and customer satisfaction. Their intuitive monitoring system allows users to track performance and energy usage effortlessly, reinforcing their reputation as a dependable and forward-thinking energy storage provider.
Why Buy From US Solar Supplier?
As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.
Need Assistance?
We’re here to help! If you have any questions or need more information before making your purchase, don’t hesitate to call us at 1-800-230-7004. Our knowledgeable and friendly team is ready to assist you with product details, installation advice, or the purchasing process.
Why Buy From Us?
Trusted Supplier: We work with Tier 1 manufacturers who stand behind their products.
Expert Support: Our team is here to guide you every step of the way.
Manufacturer-Backed Warranties: Enjoy peace of mind with the 25-year performance guarantee and 12-year product warranty directly from the manufacturer.
Easy and Secure Checkout: Your information is protected with top-notch security for a smooth, worry-free transaction.
Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!