What is the Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh?

The Fortress Power Avalon HV Pro ESS is a high-performance solar energy storage system that combines a hybrid inverter, high-voltage battery, and smart energy panel into one all-in-one backup solution for residential use.

How much power can the Fortress Power Avalon HV Pro ESS provide?

This system delivers 11.4kW of continuous power with 14.7kWh of usable energy, making it suitable for running large household loads and critical appliances during power outages.

Is the Fortress Power Avalon HV Pro ESS expandable?

Yes, the modular design allows homeowners to expand storage capacity as energy demands increase, making it a flexible solution for both current and future power needs.

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Fortress Power Avalon HV Pro ESS with Smart Energy Panel, 11.4kW Inverter, 14.7kWh (3 x 4.9kWh Batteries), 200 A Transfer Switch

Fortress Power Avalon HV Pro ESS with Smart Energy Panel, 11.4kW Inverter, 14.7kWh (3 x 4.9kWh Batteries), 200 A Transfer Switch

Fortress Power Avalon HV Pro ESS energy storage system and app interface

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Lifetime Customer Support

Unlimited lifetime support, always available.

Trusted by 1,000s of Contractors & Installers

In Stock

SKU PES-ESS-BTS-0005

Fortress Power Avalon HV Pro ESS with Smart Energy Panel, 11.4kW Inverter, 14.7kWh (3 x 4.9kWh Batteries), 200 A Transfer Switch

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$14,762.16 USD

$ $14,762.16 USD

Sale Sold out

Quantity

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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.

In High Demand! Order Now To Secure Your Items

Request a Free Quote

Got Questions? We’re Here to Help!

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Specifications

Datasheet

Capacity Kwh 14.7 / 19.6 / 24.5 / 29.4 (3-6 modules)

Capacity Ah 102

Voltage 144V / 192V / 240V / 288V (nominal)

Chemistry LFP (Lithium Iron Phosphate)

Cycle Life 8000 @ EOL 70%

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 Avalon HV Pro ESS 11.4kW 14.7kWh is built for high efficiency and reliability. This Solar energy storage system supports large backup loads and ensures your home stays powered even during extended outages. The system's modular design and intuitive controls make it easy to manage and expand as your energy needs grow. Ideal for both new installations and upgrades to existing systems, it combines flexibility with cutting-edge technology.

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Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh Features

High efficiency for large backup loads

Optimized for handling substantial energy demands, ensuring continuous power during extended outages.

Modular design for easy expansion

Expandable system allows for increased storage capacity as needed, supporting your energy growth.

Intuitive controls and user interface

Simplifies energy management with easy-to-use controls and real-time monitoring.

Ideal for new installations or system upgrades

Compatible with existing systems and perfect for new setups, offering flexibility and reliability.

Advanced technology for reliable performance

Incorporates cutting-edge components to ensure consistent and efficient energy storage.

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How it works

The Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh is truly an all-in-one, wholehome backup system. The system combines a hybrid inverter, high-voltage battery, and a smart energy panel.

Smart Energy Panel

Maintain control of your large and small appliances. Plus, monitor how your system is working.

HV Inverter

Convert DC energy from your solar panels to AC energy to serve your home needs.

HV Battery

Stores your energy, providing you safety and security during a power outage.

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?

S

Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh Features

High efficiency for large backup loads

Optimized for handling substantial energy demands, ensuring continuous power during extended outages.

Modular design for easy expansion

Expandable system allows for increased storage capacity as needed, supporting your energy growth.

Intuitive controls and user interface

Simplifies energy management with easy-to-use controls and real-time monitoring.

Ideal for new installations or system upgrades

Compatible with existing systems and perfect for new setups, offering flexibility and reliability.

Advanced technology for reliable performance

Incorporates cutting-edge components to ensure consistent and efficient energy storage.

S

How it works

The Fortress Power Avalon HV Pro ESS 11.4kW 14.7kWh is truly an all-in-one, wholehome backup system. The system combines a hybrid inverter, high-voltage battery, and a smart energy panel.

Smart Energy Panel

Maintain control of your large and small appliances. Plus, monitor how your system is working.

HV Inverter

Convert DC energy from your solar panels to AC energy to serve your home needs.

HV Battery

Stores your energy, providing you safety and security during a power outage.

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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.

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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.

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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