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Fortress Whole Home Solar hybrid inverter; Max 21kW PV Array. Max 18 kW AC Outpost to Grid + battery

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Fortress Whole Home Solar hybrid inverter; Max 21kW PV Array. Max 18 kW AC Outpost to Grid + battery

$4,873.51 USD

$ $4,873.51 USD

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In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Fortress Power Envy Inverter 12kW Hybrid System

The Fortress Power Envy Inverter 12kW is a high-efficiency hybrid inverter designed for seamless integration in both grid-tied and off-grid solar energy systems. Engineered with precision, this inverter delivers consistent energy conversion and reliable power supply for residential and commercial use. Its advanced hybrid technology enables efficient management of solar power production, fortress battery storage, and utility grid interactions. This leads to enhanced energy independence and significant cost savings for users.

With this inverter, users benefit from a smart and adaptable system that maximizes solar energy use while maintaining grid stability. The integration capabilities of the Fortress Envy Inverter make it an ideal choice for diverse environments and applications.

Product Features

High Output Power

The Envy Inverter provides a continuous 12,000 watts output, supporting large homes and light commercial applications. It delivers excellent energy efficiency and reliable operation in varying conditions. This makes the inverter a robust solution for those wanting consistent, high-quality power from their solar systems.

Its capability to maintain high output power ensures steady electricity supply, crucial for homes with high energy demand or businesses requiring dependable power.

Hybrid Operation Capability

Designed for versatile use, this inverter works seamlessly with lithium fortress batteries, allowing secure energy storage and backup options. It supports both on-grid and off-grid setups, making it highly adaptable for various environmental and electrical scenarios. The hybrid operation feature ensures smooth energy transfer between solar panels, batteries, and the main grid.

This capability improves resilience and reliability, enabling uninterrupted power availability even during grid outages or fluctuating solar conditions.

Advanced Monitoring and Control

Equipped with smart monitoring features, the Envy Inverter offers real-time system status reviews through user-friendly dashboards. It supports multiple communication protocols such as Wi-Fi, RS485, and CAN. These interfaces provide users with enhanced control and oversight of their solar energy system.

By giving access to detailed performance data, users can efficiently manage energy flow, optimize usage, and detect potential issues early.

High Conversion Efficiency

Achieving a peak efficiency of up to 97.5%, the Fortress Power Envy Inverter minimizes energy losses. This high conversion rate ensures the optimal performance of solar arrays and stored battery power. The result is significantly improved overall system output and energy savings.

Efficiency at this level means users get the most out of their investment in solar technology and fortress battery storage.

Robust and Durable Fortress Power Design

The inverter features a NEMA 3R case, making it suitable for both indoor and outdoor installation. Its rugged design provides resistance to harsh environmental conditions, ensuring long-lasting durability. This resilience means that the inverter can operate reliably under extreme weather or challenging installation sites.

Fortress focus on durability guarantees users a product that stands the test of time and offers dependable performance.

How the Fortress Power Envy Inverter Works

The Envy Inverter 12kW converts DC power from solar modules and fortress batteries into AC electric current suitable for home or business needs. It intelligently manages energy flow between solar generation, battery storage, and grid sources. This management guarantees smooth and uninterrupted power availability at all times.

By coordinating multiple power inputs efficiently, the inverter ensures that energy demand is always met in the most cost-effective and sustainable way.

Hybrid Power Management

This inverter dynamically balances load requirements with solar generation and battery reserves. It switches smoothly between energy sources to maintain stable and efficient function under various operating conditions. The hybrid power management system maximizes energy usage and minimizes reliance on the grid.

This smart balancing act supports both energy independence and system longevity.

Grid and Fortress Battery Integration

Compatible with Fortress eFlex and eVault series batteries, the Envy Inverter ensures seamless synchronization between stored energy and grid supply. This advanced integration optimizes energy utilization and load management. Users benefit from reliable backup power and flexible energy options tailored to their needs.

The synchronization capability helps maximize the lifespan and performance of fortress battery systems while enhancing overall energy efficiency.

Specifications

Rated Power Output	12kW
Operating Voltage Range	120/240V AC Split Phase
DC Input Voltage	180–550V DC
Peak Efficiency	97.5%
Communication Interfaces	Wi-Fi, RS485, CAN
Battery Compatibility	Fortress Power eFlex & eVault
Protection Rating	NEMA 3R
Weight	110 lbs
Dimensions	25.5 x 21.6 x 7.8 inches
Manufacturer	Fortress Power
Model Number	Envy Inverter 12kW

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Fortress Power Envy Inverter 12kW Hybrid System

Product Features

High Output Power

Its capability to maintain high output power ensures steady electricity supply, crucial for homes with high energy demand or businesses requiring dependable power.

Hybrid Operation Capability

This capability improves resilience and reliability, enabling uninterrupted power availability even during grid outages or fluctuating solar conditions.

Advanced Monitoring and Control

By giving access to detailed performance data, users can efficiently manage energy flow, optimize usage, and detect potential issues early.

High Conversion Efficiency

Efficiency at this level means users get the most out of their investment in solar technology and fortress battery storage.

Robust and Durable Fortress Power Design

Fortress focus on durability guarantees users a product that stands the test of time and offers dependable performance.

How the Fortress Power Envy Inverter Works

By coordinating multiple power inputs efficiently, the inverter ensures that energy demand is always met in the most cost-effective and sustainable way.

Hybrid Power Management

This smart balancing act supports both energy independence and system longevity.

Grid and Fortress Battery Integration

The synchronization capability helps maximize the lifespan and performance of fortress battery systems while enhancing overall energy efficiency.

Specifications

Rated Power Output	12kW
Operating Voltage Range	120/240V AC Split Phase
DC Input Voltage	180–550V DC
Peak Efficiency	97.5%
Communication Interfaces	Wi-Fi, RS485, CAN
Battery Compatibility	Fortress Power eFlex & eVault
Protection Rating	NEMA 3R
Weight	110 lbs
Dimensions	25.5 x 21.6 x 7.8 inches
Manufacturer	Fortress Power
Model Number	Envy Inverter 12kW

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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