#1 Global Residential Battery Manufacturer
Fox ESS ranked #1 Global Residential Battery Manufacturer. 500,000 installations in 2025. Unrivaled quality.
Ranking: S&P Global Energy tracker, reported by Fox ESS.
Your Proven Home Energy Saver Professionals
Fall Special | Backup solar battery | Ends November 30, 2026
Standard price $13,900 | Fall Special $12,900 installed
Login or create your Energy Saver Portal to secure or purchase your system
Login or create your Energy Saver Portal to view additional savings options and to confirm your orderTerms and conditions apply.
Fall Special | Ends November 30, 2026
Store power for outages and use it during high-rate hours.
The battery keeps essentials running: refrigerator, lights, Wi-Fi, well pump, medical devices, and selected circuits.
View or download the Fox ESS brochure and specifications (PDF)
A 12 kWh home backup battery system, up to 80 kWh.
Login or create your Energy Saver Portal to secure or purchase your system
Login or create your Energy Saver Portal to view additional savings options and to confirm your orderTo get the Fall Special price and confirm your order, set up or log in to your Energy Saver Portal, or schedule a call or virtual meeting.
Includes the inverter, batteries and standard installation.
Scan to apply with Slice by FNBO, or tap to apply on your phone.
Apply for financingWith approved credit. Terms and conditions apply.
South Carolina's credit covers battery storage connected to a solar energy system. A battery installed without solar does not qualify (SC Department of Revenue).
South Carolina homeowners may qualify for the state solar tax credit. Terms and conditions apply.
Why we chose Fox ESS
Fox ESS ranked #1 Global Residential Battery Manufacturer. 500,000 installations in 2025. Unrivaled quality.
Ranking: S&P Global Energy tracker, reported by Fox ESS.
Fox ESS batteries are sold in more than 90 countries (Fox ESS).
Longer than the common 10-year battery warranty, with a 70% capacity retention guarantee (Fox ESS warranty).
LFP chemistry, 90% depth of discharge, over 95% round-trip efficiency, IP65 rated, and UL 9540 / UL 9540A certified (EQ4000 datasheet).
A 100% 12.5-year manufacturer replacement warranty at a lower cost per kWh than many big-name batteries. We pass that value on with one flat campaign price.
Modular battery packs stack on top of each other. Start at 12 kWh and add more later at low cost, without replacing the system.
When the grid goes down
Refrigerator, freezer, and well pump stay on.
Stay connected for work, school, and storm updates.
CPAP, oxygen concentrators, and other essentials.
Use stored energy when utility rates are highest.
Why U.S. Energy Solutions
We are a licensed home energy contractor based locally in Greenville, SC, serving South Carolina, North Carolina, and Georgia.
We install and service solar, batteries, Generac generators, HVAC, and electrical. We are also a Duke Energy Ally.
How it works
Request information
Tell us a little about your home. We'll reach out to set up your virtual meeting and send your quick estimate to your secure portal.
Fill out the short form and tell us what you would like. We'll confirm the next step.
Questions
No. The federal residential clean energy credit ended for systems installed after December 31, 2025.
South Carolina's 25% Solar Energy Credit is still available to homeowners who qualify. Terms and conditions apply.
It does when it's connected to a solar energy system. A standalone battery without solar does not qualify under SC Department of Revenue guidance. We'll show both options in your estimate.
No in-home visit needed to get your assessment completed and your estimate. We design your system and review it with you in an online virtual meeting. Once you decide to move forward, a technician visits your home before installation.
We use satellite imagery, your utility bills, and photos of your electrical panel. You save time, and you get a clear estimate quickly.
Yes. The Fox ESS system is modular, so you can add battery modules at low cost whenever you want more backup, up to 80 kWh. Modules stack onto your existing system.
We install add-ons for you because the battery runs at high voltage and Fox ESS requires an accredited installer to keep your warranty in force.
The $12,900 Fall Special (standard price $13,900) includes the inverter, the batteries and standard installation, with the 100% 12.5-year manufacturer replacement warranty. Panel upgrades or unusual site conditions are quoted separately before you commit.
We work with Duke Energy, Laurens Electric, Blue Ridge, and regional electric co-ops in our service area. We are also a Duke Energy Ally.
Yes. Select "current customer" on the form. We'll review your existing system and show how a Fox ESS battery fits.
A 12 kWh home backup battery system, up to 80 kWh.
Standard price $13,900Fall Special $12,900 installed
To get the Fall Special price and confirm your order, set up or log in to your Energy Saver Portal, or schedule a call or virtual meeting.
100% 12.5-year manufacturer replacement warranty.
