Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter - ShopSolar.com

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SKU FORTRESS-ENVY-8KW

by Fortress Power

Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter

Name: Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter
Brand: Fortress Power
Price: 4399.0 USD
Availability: InStock

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Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter

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In Stock Get yours today!

15+ sold In the last 7 days

Deliver to -

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Free Returns Free Returns within 30 Days of Purchase

Lifetime Customer Support Unlimited lifetime support, always available.

General Overview

Products Details

Reviews

FAQ's

Why Choose Shop Solar

Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter

The Fortress Power Envy 8kW and 10kW are a whole-home, all-in-one inverter solution. Paired with the Fortress Power eFlex 5.4 kWh, the eVault MAX 18.5 kWh or LFP-10 MAX batteries, the Envy features a 90A AC passthrough providing up to 8kW (33.3@ 240V) or 10kw (41.6A @240V) of whole-home backup power.

The Envy features a built-in generator input with AC/DC coupling, on- and off-grid capabilities, plus a 2 MPPT output allowing for a maximum of 13 kW PV array (Envy 8kW) or 15kW PV array (Envy 10kW). The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with integrated AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access your system from anywhere.

Key Features:

IP65 Rated For Indoor & Outdoor Installations
2 MPPTs Output For:
- Max Input 13KW PV Array (Envy 8kW)
- Max Input 15KW PV Array (Envy 10kW)
AC/DC Coupling
90A Built-In Auto Transfer Switch
Built-In Generator Input
5 Units In Parallel
Online Monitoring/App
Color LCD Touch Screen.
3 Phase Compatible (Upcoming Feature)

Supported Applications:

Backup
Off-Grid
Zero Export
Time-Of-Use
Virtual Power Plant

Fortress Power Envy 8KW Specifications

Input DC (PV Side)

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. DC Input Current 25A / 25A
MPPT Number/(Strings per MPPT) 2 / 2

Output/Input AC (Grid)

Continuous AC Power to Grid 8000W (240V)
Continuous AC Power to Load with Grid or Generator 21000W (240V) AC Passthrough/ 12000W (240) GEN
Nominal Output Voltage 120V/240V
Max. Continuous AC Current 33.3A @ 240V
Nominal AC Frequency 50Hz/60Hz

Output AC (Off-Grid)

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

Battery Parameters

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

Efficiency

Max. Efficiency 97.5%
MPPT Efficiency 99.9%
CEC Efficiency 96.5%

General Data

Dimensions 580 x 490 x 265mm (22.8 x 19.3 x 10.4 in)
Weight 44kg (97lbs)
Display Color LCD
Ambient Temperature Range -25 to 60 °C (-13 to 140 °F)
Cooling FAN
Communication RS485/Wi-Fi/CAN
Warranty 5 Years

Still Have Questions? Give us a call today 1-877-242-2792

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 Shop Solar. 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 Shop Solar Kits equipment, we’ve got you covered: we’re always only a phone call or email away.

Top Solar Company in the USA

The prestigious ranking by Consumer Affairs is based on comprehensive evaluations, including ratings and reviews, equipment options, support services, pricing transparency, warranties, and various other factors. Among the top 6 nominated companies, Shop Solar stands out with the highest review rating, reaffirming its dedication to customer satisfaction and product quality.

Best Components, Lowest Prices

We cut out the bloat of traditional solar companies and pass those savings off to you. Plus, we provide free shipping on all solar kits and lifetime customer service on everything we sell.

Expert Guidance

Our team of solar professionals is here 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.

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We’re people just like you

We’re not corporate and neither are our customers. We’re just a group of 50+ solar enthusiasts who are passionate about providing an honest, no-BS way for anyone, anywhere to improve their lives and the world around them with solar power.

Trusted Solar Authority

With over 40,000+ happy customers, 2,500+ positive reviews, and decades of experience in the industry, we’re proud to say we’re America’s #1 solar power solutions provider. You can trust us to provide you with top-notch products and legendary customer service at every step of the way.

Prepare for Anything

From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.

Solar Power Made Easy

Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.

Secure Your Independence

Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.

Solar That Makes Sense - DIY+

Why pay more when you can go solar your way? With our DIY+ model, you become the master of your own solar project - we call it being your own general contractor, using our seasoned technicians to help guide you at every turn. So you can skip the high-commission salespeople and source your own top-tier equipment from us, and if you need a professional installer, we can help with that too. It’s solar, but smarter and more rewarding—because who said going green couldn’t also save you some green?

Solar Power, Your Way - Expert Guidance Included

Become Your Own Solar Contractor with Our DIY+ Program

Save Thousands with Our DIY Solar Kits and Support

Go Green and Save Green with Our Do-It-Yourself Solar Solution

Solar Power, Your Way - Expert Guidance Included

Become Your Own Solar Contractor with Our DIY+ Program

Save Thousands with Our DIY Solar Kits and Support

Go Green and Save Green with Our Do-It-Yourself Solar Solution

Why Choose Shop Solar

What To Expect - Complete Kits

We've been providing America and Canada with complete solar kits since 2018. Our mission is to make solar simple, which is why our complete packages contain every part and piece that you'd ever need. Designed by our expert solar and electrical engineers, we can have the entire kit shipped to your door. All of our kits come with diagrams and videos along with a lifetime of customer support.

Top Solar Company in the USA

The prestigious ranking by Consumer Affairs is based on comprehensive evaluations, including ratings and reviews, equipment options, support services, pricing transparency, warranties, and various other factors. Among the top 6 nominated companies, Shop Solar stands out with the highest review rating, reaffirming its dedication to customer satisfaction and product quality.

Best Components, Lowest Prices

We cut out the bloat of traditional solar companies and pass those savings off to you. Plus, lifetime customer service on everything we sell.

Expert Guidance

Our team of solar professionals is here 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.

We’re people just like you

We’re not corporate and neither are our customers. We’re just a group of 50+ solar enthusiasts who are passionate about providing an honest, no-BS way for anyone, anywhere to improve their lives and the world around them with solar power.

Trusted Solar Authority

With over 40,000+ happy customers, 2,500+ positive reviews, and decades of experience in the industry, we’re proud to say we’re America’s #1 solar power solutions provider. You can trust us to provide you with top-notch products and legendary customer service at every step of the way.

What to Expect - Solar Panels

Get to know the top-tier solar panels included in your kit. These panels are designed to deliver consistent & reliable performance, ensuring your system powers your needs with ease.

What to Expect - Batteries

Learn about the high-quality batteries included in every solar kit, designed to provide reliable energy storage for all your needs. These batteries ensure your system delivers consistent power when you need it most.

Go Solar Now, Pay Later

At ShopSolar you, we offer a wide variety of payment plan options to meet each customer's needs.

Quick and Easy Application

Fill out a short application and we will match you with multiple payment plan options instantly - Survey at checkout!

Poor Credit or No Credit?

Don’t sweat it. We welcome all credit scores and having a credit score is not required for approval.

No Money Down Today

Some payment plans offer as little as no money down, if you qualify.*` - Survey at checkout!

How we compare to the others!

Tired of the costly and complicated traditional solar sales model? At ShopSolar.com, we streamline the process with our digital-first platform, offering one-click complete solar power solutions that save you up to 50%, often including batteries, for true energy independence. Join over 45,000 satisfied customers enjoying affordable solar energy. Start your journey towards saving thousands at ShopSolar.com today!

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Customer Success Stories

TP

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.

JB

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 Shop Solar 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 Shop Solar.

PB

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 Shop Solar 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!

JM

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Shop Solar. 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 Shop Solar Kits.

BH

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go. ShopSolar's 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.

KS

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!

CA

Coll A

Great Experience

My experience with Shop Solar 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.

TP

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.

JB

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 Shop Solar 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 Shop Solar.

PB

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 Shop Solar 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!

JM

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Shop Solar. 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 Shop Solar Kits.

BH

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go. ShopSolar's 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.

KS

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!

CA

Coll A

Great Experience

My experience with Shop Solar 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.

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Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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We get it—solar can be confusing, especially if you're diving in for the first time. Which is exactly why we created this short, no-fluff solar mini course. In just 60 minutes, you'll learn everything you need to know to size, install, and optimize your very own solar power system—no confusing jargon or technical overwhelm.
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Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter

Fortress Power Envy True 8 | 8kW Whole Home Solar Storage Inverter

Fortress Power Envy 8KW Specifications

Still Have Questions? Give us a call today 1-877-242-2792

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?

How does your Lifetime Customer Support work?

Top Solar Company in the USA

Best Components, Lowest Prices

Expert Guidance

We’re people just like you

Trusted Solar Authority

Prepare for Anything

Solar Power Made Easy

Secure Your Independence

Solar That Makes Sense - DIY+

Solar Power, Your Way - Expert Guidance Included

Become Your Own Solar Contractor with Our DIY+ Program

Save Thousands with Our DIY Solar Kits and Support

Go Green and Save Green with Our Do-It-Yourself Solar Solution

Solar Power, Your Way - Expert Guidance Included

Become Your Own Solar Contractor with Our DIY+ Program

Save Thousands with Our DIY Solar Kits and Support

Go Green and Save Green with Our Do-It-Yourself Solar Solution

Why Choose Shop Solar

What To Expect - Complete Kits

Top Solar Company in the USA

Best Components, Lowest Prices

Expert Guidance

We’re people just like you

Trusted Solar Authority

What to Expect - Solar Panels

What to Expect - Batteries

Go Solar Now, Pay Later

Quick and Easy Application

Poor Credit or No Credit?

No Money Down Today

How we compare to the others!

Customer Success Stories

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

Easy Process, Genuine Support

Off Grid Solar Purchase

Highly Recommend

Solar Kit for Mobile Work Van

Best Tech Support

Great Experience

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

Easy Process, Genuine Support

Off Grid Solar Purchase

Highly Recommend

Solar Kit for Mobile Work Van

Best Tech Support

Great Experience

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

SOLAR + STORAGE MINI COURSE

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