Skip to content
Contact Us Price Match Guarantee FAQs Why Buy From Us About Us Customer Reviews Installer Program Build Your System
Fortress Power Envy 8/10kW Hybrid Inverter

Fortress Power Envy 8kW/10kW Hybrid Inverter
$3,549.00 - $3,819.00
$3,549.00
$3,549.00 - $3,819.00
$3,549.00
✓ Authorized Fortress Power Dealer
✓ Lowest Price Guaranteed
✓ Brand New & FREE Shipping: In Stock Ready To Ship
✓ Questions? Talk to a Fortress Power Expert: 1-303-876-7654
✓ PRICE MATCH GUARANTEE


Renewable Outdoors LLC BBB Business Review

Login for Exclusive Member Pricing.
Not a member? Create a Free Account.

Size: 8kW

Envy 8/10kW Hybrid Inverter

The Fortress Power Envy 8/10kW Hybrid Inverter is a versatile all-in-one energy solution designed for whole-home backup, solar energy storage, and off-grid or grid-tied applications. Built to deliver reliable performance, the Fortress Power Envy 8/10kW Hybrid Inverter provides up to 8kW or 10kW of continuous output with a 60A AC passthrough, ensuring consistent power to essential circuits or full-home systems.

It integrates seamlessly with Fortress Power 48V batteries, including the eFlex 5.4 kWh, eFlex MAX 5.4 kWh, eVault MAX 18.5 kWh, and LFP-10 MAX, making it an ideal choice for scalable residential and light commercial energy systems. With support for both AC and DC coupling, dual MPPTs, and up to 13 kW or 15 kW of solar PV input depending on configuration, the Fortress Power Envy 8/10kW Hybrid Inverter maximizes solar production and energy efficiency.


The Fortress Power Envy 8/10kW Hybrid Inverter is engineered for streamlined installation and intelligent energy management, featuring integrated AC and DC breakers, a built-in generator input, and an APsmart Module Level Rapid Shutdown Transmitter and Button for code-compliant safety. Through the Fortress Power Guardian mobile app, users and installers can monitor system performance, access real-time data, and perform firmware updates remotely, enhancing long-term system optimization.

Utility-approved across the United States and Puerto Rico, the Fortress Power Envy 8/10kW Hybrid Inverter also supports Virtual Power Plant participation, allowing users to send stored energy back to the grid during peak demand for potential financial incentives. Whether optimizing solar usage, reducing reliance on the grid, or building a reliable backup power system, the Fortress Power Envy 8/10kW Hybrid Inverter delivers scalable, efficient, and smart energy control.

Fortress Power Envy 8kW Specs

  • Max. DC Input Power for Single MPPT: 6000W / 6000 W
  • Max. PV Input Power: 13000W
  • Max. PV Power Delivered to Battery & AC Outputs: 12000W
  • DC Input Voltage Range: 100V-600V
  • Nominal DC Input Voltage: 360V
  • Full Power MPPT Voltage Range: 170V-500V
  • Max. Useable Input Current: 25A / 25A
  • MPPT Number/(Strings per MPPT): 2 / 2
  • Continuous AC Power to Grid: 8000W (240V)
  • Continuous AC Power to Load with Grid or Generator: 14,400W (240V) AC Passthrough/ 12000W (240) GEN
  • Nominal Output Voltage: 120/240V Single Split Phase, 120/208V Single Split Phase, 120/208V Three Phase
  • Max. Continuous AC Current: 33.3A @ 240V
  • Nominal AC Frequency: 50Hz/60Hz
  • Max. Output Power: 8000W
  • Nominal Output Voltage: 120V/240V
  • Nominal Output Frequency: 50Hz/60Hz
  • Nominal Output Current: 33.3A @ 240V
  • Peak Power: 16kW / 500ms
  • Switching Time: Seamless
  • Dedicated Auto-start Generator Port: 50A / 12kW
  • Compatible Battery Type: eVault Max, eFlex, LFP-10 MAX
  • Nominal Battery Voltage: 48V
  • Battery Voltage Range: 48V-56V
  • Maximum Charging/Discharging Current: 167A
  • Maximum Charging/Discharging Power : 8000W
  • Dimensions: 22.8 x 19.3 x 10.4 in
  • Weight: 97lbs

Fortress Power Envy 10kW Specs

  • Max. DC Input Power for Single MPPT: 6000W / 6000 W
  • Max. PV Input Power: 15000W
  • Max. PV Power Delivered to Battery & AC Outputs: 12000W
  • DC Input Voltage Range: 100V-600V
  • Nominal DC Input Voltage: 360V
  • Full Power MPPT Voltage Range: 210V – 500V
  • Max. Useable Input Current: 25A / 25A
  • MPPT Number/(Strings per MPPT): 2 / 2
  • Continuous AC Power to Grid: 10000W (240V)
  • Continuous AC Power to Load with Grid or Generator: 14,400W (240V) AC Passthrough/ 12000W (240) GEN
  • Nominal Output Voltage: 120/240V Single Split Phase, 120/208V Single Split Phase, 120/208V Three Phase
  • Max. Continuous AC Current: 41.6A @ 240V
  • Nominal AC Frequency: 50Hz/60Hz
  • Max. Output Power: 10000W
  • Nominal Output Voltage: 120V/240V
  • Nominal Output Frequency: 50Hz/60Hz
  • Nominal Output Current: 41.6A @ 240V
  • Peak Power: 20kW / 500ms
  • Switching Time: Seamless
  • Dedicated Auto-start Generator Port: 50A / 12kW
  • Compatible Battery Type: eVault Max, eFlex, LFP-10 MAX
  • Nominal Battery Voltage: 48V
  • Battery Voltage Range: 48V-56V
  • Maximum Charging/Discharging Current: 210A
  • Maximum Charging/Discharging Power : 10000W
  • Dimensions: 22.8 x 19.3 x 10.4 in
  • Weight: 97lbs

Fortress Power Envy 8/10kW Features

  • Powerful, Scalable Solar + Storage Performance: The Envy 8/10kW Hybrid Inverter delivers up to 13 kW of PV input and offers a selectable 8kW or 10kW continuous output — perfect for whole-home backup or larger residential systems. Need more power? Parallel up to 10 units for a maximum of 80kW or 100kW of AC output.
  • Supports Split-Phase and Three-Phase Applications: The Envy is engineered for residential 120/240V split-phase systems and can also be used in commercial 120/208V or 127/220V three-phase setups with just two or more inverters — offering unmatched versatility for mixed-use projects.
  • Plug-and-Play Installation for Faster Setup: Designed with built-in AC and DC breakers and generous internal space for wire management, the Envy enables a streamlined installation process — reducing labor time and simplifying wiring for both retrofit and new systems.
  • Virtual Power Plant (VPP) Ready: Join utility demand response programs and get paid to support the grid. The Envy is VPP-compatible and approved by utilities across the U.S. and Canada, allowing your Fortress Power system to discharge energy during peak demand and generate ongoing financial rewards.
  • Built-In Rapid Shutdown for Code Compliance: Avoid the hassle of extra components. The Envy 8/10kW features a fully integrated rapid shutdown transmitter, helping your installation meet NEC 2017 & 2020 code requirements without the need for external devices — saving time and cost.
  • Remote Monitoring and Firmware Updates: Monitor your solar production, battery performance, and grid consumption anytime via the Fortress Power mobile app. The Envy also supports remote firmware updates, ensuring your system stays up to date without the need for onsite visits.

Your Satisfaction with Fortress Power is Guaranteed:

  • 10-Year Limited Warranty
  • Lowest Price Guarantee