Modular Storage
Battery modules stack under the inverter, so storage is configured around your home's needs instead of one fixed size.
Fox ESS PowerQ home battery
Fox Battery Installation in Florida
Explore the Fox ESS PowerQ home battery system, professionally designed and installed by Coastal Energy. Store energy for when you need it most and prepare your home for power outages.
- About 20 kWh
- Example storage (19.85 kWh nominal)
- Up to 11.4 kW
- Largest PowerQ model
- Up to 80 kWh
- Total in eligible multi-unit systems
- Type 4X
- Outdoor rated enclosure
Straight answer
What Is the Fox ESS PowerQ Battery System?
Fox ESS PowerQ is an all-in-one home battery system: a PowerQ inverter sits on top of stackable EQ4000 lithium iron phosphate battery modules. Coastal Energy designs and installs PowerQ systems to store solar energy and, with the right backup equipment, power your home during Florida outages.
- Example size
- About 20 kWh
- 19.85 kWh nominal with 5 battery modules
- Continuous power
- Up to 11.4 kW
- Largest PowerQ model with four or more battery modules
- System expansion
- Up to 80 kWh
- Total capacity in eligible multi-unit designs
- Manufacturer warranty
- 12.5 years
- Limited warranty, terms apply
Backup power
Power for the Moments That Matter
Florida's storm season makes backup power a real priority. No battery can promise power through every situation, but a well designed PowerQ system keeps stored energy ready for when the grid goes down.
Backup When the Grid Goes Down
Designed with the right backup equipment, PowerQ can keep your selected circuits running during a utility outage.
Solar Energy Saved for Later
Store daytime solar production and use it in the evening or overnight instead of sending it all back to the grid.
You Choose What Stays On
We help you pick the circuits and appliances that matter most, like refrigeration, lighting, internet, a well pump or an air handler.
Why PowerQ
Why Homeowners Choose Fox ESS PowerQ
Integrated Battery and Inverter
The hybrid inverter and battery modules are designed to work as one system, installed and commissioned by licensed professionals.
Lithium Iron Phosphate Chemistry
PowerQ battery modules use lithium iron phosphate (LFP) cells, a widely used chemistry for home energy storage.
App and Web Monitoring
Track solar production, battery charge and home energy use through Fox's FoxCloud app and web portal.
Outdoor Rated Enclosure
The PowerQ carries a Type 4X enclosure rating, so it can be installed outdoors where the site allows.
Automatic Backup
Paired with the appropriate backup equipment, such as the Fox Hub G2, the system can switch to battery power automatically during an outage.
How it works
How the PowerQ System Works
PowerQ is the system itself. EQ4000 modules are the batteries inside it, and Fox Hub G2 is a separate control unit some designs add for backup switching. Here is how a properly configured system connects your solar, your home and the grid.
Solar Panels
Your panels make electricity during the day. New arrays can connect to a hybrid PowerQ model, and Fox also makes AC coupled PowerQ models for homes that already have solar.
Fox ESS PowerQ
One integrated tower that stores energy and converts it into power your home can use.
PowerQ Inverter
Sits on top of the stack and converts solar and battery power for your home.
EQ4000 Battery Modules
Stackable LFP modules of 3.97 kWh nominal each. One PowerQ holds 2 to 7, which sets its storage capacity.
- Included in Some Designs
Fox Hub G2
Manages the connection between the system, your home, the grid and a compatible generator, including automatic switching to backup.
Utility Grid
Hub G2 isolates your home from the grid during an outage and reconnects it when utility power returns.
Generator Optional
A compatible generator can be connected for longer outages.
Your Home
Uses solar and stored energy before drawing from the grid, depending on the settings. During an outage, the circuits in your backup design stay powered.
Not every installation uses the same equipment. Some designs use Hub G2 for backup switching and load control, and others back up selected circuits without it. Compatibility and final equipment are confirmed during the site assessment.
Sizing
Battery Storage Sized for Your Home
Two numbers matter when you size a battery: how much energy it stores and how much power it can deliver at once. One PowerQ holds 2 to 7 EQ4000 modules, about 7.94 to 27.79 kWh nominal, and Fox notes that configurations above 20 kWh depend on local fire safety rules. Fox's documents list up to 80 kWh of total system capacity across multiple PowerQ units in eligible configurations. That is a system total, not the capacity of one module or one tower.
Capacity Is Measured in kWh
Kilowatt hours describe how much energy the battery stores. More kWh means your chosen circuits can run longer before the battery needs a recharge.
Power Is Measured in kW
Kilowatts describe how much the system can supply at one moment. That decides whether it can start and run large loads, like an AC compressor and a well pump, at the same time. PowerQ models range from 3.8 to 11.4 kW, and output also depends on the number of battery modules.
One Example: About 20 kWh and 11.4 kW
Fox's flyer features a PowerQ of about 20 kWh and 11.4 kW: 5 EQ4000 modules, which Fox's battery datasheet lists at 19.85 kWh nominal, with the largest PowerQ model. It is one example, not the size of every system or a performance guarantee.
Backup control
Smart Backup With Fox Hub G2
Fox Hub G2 is a separate control and backup switching unit that can be added to a PowerQ system. When it is part of a compatible design and installed correctly, it can isolate your home from the grid automatically during an outage, manage selected circuits so the battery is not overloaded, and connect a compatible generator.
Fox's Hub G2 datasheet lists a grid switchover time under 20 milliseconds, three smart load circuits and an optional generator input, and one Hub G2 can coordinate up to 4 PowerQ inverters.
Not every installation includes a Hub G2, and backup and integration features depend on the equipment selected and your home's electrical setup. We confirm generator and existing solar inverter compatibility during the site assessment rather than assuming it.
Not Sure Which Battery Fits Your Home?
Tell us what you want to keep running and whether you already have solar. We will recommend the system that fits, Fox ESS or otherwise.
Our process
How Coastal Energy Installs Your System
Step 01
Talk Through Your Goals
We discuss your backup goals, any existing solar system and the equipment you want to keep running.
Step 02
Assess Your Property
We look at your home, electrical panel and service to see what the system needs.
Step 03
Design and Quote
You get a system design and a written quote, including the permitting your project requires.
Step 04
Install and Explain
Our licensed crew installs and commissions the system, then walks you through how it works.
Warranty
Warranty and Peace of Mind
Fox's current PowerQ datasheet lists a 12.5 year manufacturer limited warranty. Terms, registration, connectivity requirements and exclusions apply, and we confirm the manufacturer warranty that applies to your installed equipment before you sign.
Manufacturer coverage is separate from Coastal Energy's own workmanship warranty, which covers our installation work. Neither one covers storm or flood damage. Read our published terms on the workmanship warranty page.
Why Coastal Energy
Why Coastal Energy
These are Coastal Energy's own credentials, not Fox ESS certifications.
Florida Based
Offices in Fort Myers, Naples and Miami, with crews who work in Florida heat, salt air and storm season every day.
Licensed Electrical Team
Florida electrical contractor license EC13013993. Battery systems are permitted and inspected like any other electrical work.
Veteran Owned
Coastal Energy is a veteran owned Florida company, led by those who have served.
Service area
Fox ESS Battery Installation Across Florida
We install home battery backup for homeowners across Florida, including Southwest and Southeast Florida. Our teams work out of Fort Myers, Naples and Miami.
See every community we cover on our service areas page, or pair your battery with new solar panel installation.
Answers
Frequently Asked Questions
How Does a Fox ESS PowerQ Battery Work?
PowerQ is an integrated system: a PowerQ inverter on top of stackable EQ4000 lithium iron phosphate battery modules. It stores energy from solar panels or the grid, then supplies it to your home later, including during an outage when the system is designed with backup equipment such as Fox Hub G2.
Can It Power My Whole Home?
It depends on system size, your home's power requirements, the equipment selected and the loads you want to run. Some homes are covered with one PowerQ, others need more storage, more power or a focus on essential circuits. We size it during the site assessment.
How Much Does a Fox ESS Battery Cost?
Coastal Energy provides a project-specific quote after reviewing your home, your backup goals and the equipment needed. We do not publish a standard Fox ESS price because configurations vary.
What Warranty Comes With It?
Fox's current PowerQ datasheet lists a 12.5 year manufacturer limited warranty, with terms, registration and exclusions. Coastal Energy's separate workmanship warranty covers our installation. We confirm the exact manufacturer terms for your installed equipment.
Can It Provide Backup During a Power Outage?
Yes, when the system includes the right backup equipment, such as the Fox Hub G2, and is installed for backup. It can then isolate your home from the grid and run the circuits it was designed to support. How long it lasts depends on battery size and what you run.
Can It Work With My Existing Solar Panels?
Often. Fox makes AC coupled PowerQ models for homes that already have solar, but compatibility has to be confirmed. We review your existing inverter, panel layout and electrical service during an assessment before recommending a design.
Can I Add More Storage Later?
PowerQ is modular. One PowerQ holds 2 to 7 EQ4000 modules, and eligible designs can add PowerQ units up to 80 kWh total. What is possible depends on your original design, the equipment installed, local fire safety rules and permitting and utility requirements. Tell us if you expect to expand so we can plan for it from the start.
Keep reading
Related Pages
Home Battery Comparison
Fox ESS, Tesla, FranklinWH, Enphase and EcoFlow side by side.
Solar Panel Installation
Pair a PowerQ battery with a new solar array.
Tesla Powerwall 3
Details and published pricing for Tesla's home battery.
FranklinWH Battery
Another whole home battery option we install.
Workmanship Warranty
Our published terms for installation coverage.
Service Areas
Florida communities served by Coastal Energy.
Ready for a Fox ESS Battery Quote?
Tell us about your home, your backup goals and any solar you already have. We will design a PowerQ system around it and send a project-specific quote.