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Fortress Power Envy True 12kW Whole-Home Hybrid Inverter

Fortress Power Envy True 12kW Whole-Home Hybrid Inverter
$4,898.00 - $4,898.00
$4,898.00
$4,898.00 - $4,898.00
$4,898.00
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12kW · Whole-Home · 10-Year Warranty

Fortress Power Envy True 12kW Whole-Home Hybrid Inverter

The Envy True 12kW delivers 12kW of continuous AC output with up to 21kW of solar PV input across three MPPT trackers, built for whole-home backup and larger residential or light commercial systems.

A 200A AC passthrough keeps critical loads powered during outages, and up to 10 units can be paralleled for up to 120kW combined as a system scales.

Fortress Power Envy True 12kW Whole-Home Hybrid Inverter
10-Year Warranty
Lowest Price Guarantee
Authorized Fortress Power Dealer
Free Shipping
0% APR Financing
Expert Support: (303) 876-7654

Why the Envy True 12kW

12kW Continuous, Up to 21kW of Solar Input

12kW of continuous AC output paired with up to 21kW of solar PV input across three MPPT trackers for larger residential and light commercial systems.

200A AC Passthrough

Built-in 200A passthrough delivers seamless power to critical loads or the full home during outages or peak demand.

Parallel Up to 10 Units, 120kW Total

Scale from a single inverter up to 120kW of combined AC output as your system grows.

Works With Lithium or Lead-Acid

Compatible with Fortress Power's eForce, eBoost, eFlex MAX, eVault MAX, and eFlex batteries, as well as lead-acid battery banks.

Built-In Rapid Shutdown

An integrated APsmart transmitter meets NEC 2017/2020 code requirements without external devices.

Color Touchscreen and Remote Monitoring

A color LCD touchscreen plus local and remote app monitoring, with remote firmware updates.

What's Included

What's included with the Fortress Power Envy True 12kW

What You Get

  • 1 × Fortress Power Envy True 12kW Whole-Home Hybrid Inverter
  • Integrated AC and DC breakers
  • Built-in APsmart Rapid Shutdown Transmitter
  • Documentation

Battery bank and solar array sold separately.

Full Specifications

Model Fortress Power Envy True 12kW
Continuous AC Output to Grid 12,000W (240V) / 10,400W (208V)
AC Passthrough (Grid or Generator) 48,000W (240V) / 21,000W (generator)
Peak Output 14kW for 10 minutes; 16kW for 5 minutes; 20kW for 500ms
Switching Time Seamless (product page); under 20ms (datasheet) — Fortress Power's own materials phrase this two ways, both reported
DC Input Voltage Range 100V–600V (550V max recommended)
MPPT Trackers 3 (2/1/1 configuration)
Max PV Input 21,000W
Max Power to Battery & AC Outputs 18,000W
Generator Input 100A max / 90A continuous
Output Voltage Configuration 120/240V split-phase, 120/208V split-phase, 120/208V three-phase, 120/220V three-phase
Max Continuous AC Current 50A @ 240V / 50A @ 208V
AC Frequency 50Hz/60Hz
Compatible Battery Types Lithium and lead-acid batteries (eForce, eBoost, eFlex MAX, eVault MAX, eFlex)
Nominal Battery Voltage 48V (range 40–60V)
Max Charge/Discharge Current 250A
Efficiency MPPT 99.9%; max 97.5%; CEC 96.5%
Dimensions 34.2"W × 20.5"H × 11.2"D
Weight 127 lb
Certifications UL1741, UL1741SB, IEEE1547A, Rule 21, ISO-NE, FCC15 Class B, HECO, CEC, Luma
Warranty 10 years
Monitoring Color LCD touchscreen, local and remote app monitoring, remote firmware updates

Authorized Fortress Power Dealer

We sell genuine Fortress Power products backed by Fortress Power's own warranty.

Lowest Price Guarantee

Find it cheaper from another authorized dealer? Call (303) 876-7654 before you order.

Real Support, Not a Ticket Queue

Sizing a system or checking inverter compatibility? Call (303) 876-7654 and talk to a person.

Documentation & Downloads

Fortress Power Envy True 12kW Whole-Home Hybrid Inverter Spec Sheet (PDF)

Fortress Power Envy True 12kW Whole-Home Hybrid Inverter: Frequently Asked Questions

How much power can this actually run in a whole-home setup?
12kW continuous with up to 20kW peak for very short bursts, and up to 200A of grid pass-through — enough for most whole-home backup needs. For anything larger, up to 10 units can be paralleled for up to 120kW. Call (303) 876-7654 and we can help you size a system to your actual panel.
What batteries work with this inverter?
Fortress Power's eForce, eBoost, eFlex MAX, eVault MAX, and eFlex lithium batteries, as well as lead-acid battery banks. Confirm compatibility with your specific model — call (303) 876-7654 if you're not sure.
Is the switching time seamless or under 20ms?
Fortress Power's own materials describe this both ways — the product page says "seamless," the datasheet specifies under 20ms. Both figures are published by Fortress Power; we're reporting both rather than picking one.
Can I run three-phase power off this?
Yes, with two or more units it supports 120/208V or 120/220V three-phase configurations in addition to standard 120/240V split-phase.
Does this qualify for Virtual Power Plant programs?
It's utility-approved across the U.S. and Puerto Rico and designed to integrate with Virtual Power Plant programs, where available, for potential compensation during peak demand.
Can I install this myself, or do I need an electrician?
Fortress Power's equipment is designed for professional installation. We strongly recommend a licensed electrician or solar installer for any battery, inverter, or enclosure installation — call (303) 876-7654 if you need a referral in your area.
Do you offer financing or price matching?
Yes. We offer 0% APR financing options through Affirm at checkout, and our Lowest Price Guarantee applies — if you find this product cheaper at another authorized Fortress Power dealer, call us at (303) 876-7654 before you order and we'll take care of it.
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