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Energy Storage & Battery Backup in Dallas-Fort Worth

Never Lose Power Again.

Dallas-Fort Worth’s trusted installer of Tesla Powerwall, FranklinWH, and EcoFlow battery storage systems. Whole-home backup power, built for the Texas grid.

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  • Tesla Certified Installer
  • FranklinWH Authorized Dealer
  • EcoFlow Partner
  • Licensed & Insured in Texas

The Texas Grid Isn't Getting Any More Reliable.

If you live in Dallas, Fort Worth, or anywhere across DFW, you already know what happens when the grid fails. Winter Storm Uri left millions of Texans without power for days. Summer heat waves push ERCOT to the brink every year. Oncor outages from thunderstorms, tornadoes, and equipment failures aren’t a question of if — they’re a question of when.

A backup generator might keep a few lights on. But it runs out of fuel, requires maintenance, and isn’t there when you need it most.

Battery storage is different. It’s silent. It’s automatic. It’s already in your home, ready the moment the grid goes down — keeping your AC running, your fridge cold, your medical devices powered, and your family safe.

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How Home Battery Backup Works

A home battery storage system stores electricity for use when you need it most. Whether you’re pairing it with solar panels or installing it as a standalone backup solution, the system works in three simple ways:

Charge

Your battery charges from your solar panels during the day, or from the grid during off-peak hours when rates are lowest.

Store

Energy is held in lithium-ion cells until you need it, with capacity ranging from 10 kWh to 40+ kWh depending on your home and goals.

Power

When the grid goes down, your battery automatically takes over in milliseconds. You won't even notice the outage — but your neighbors will.

Featured Battery Systems

Premium Battery Storage Systems We Install

We’re certified installers of the three most trusted battery storage brands in the industry. Every system is hand-selected based on your home, energy needs, and budget.

Tesla Powerwall 3

The Industry Standard for Home Battery Backup

The Tesla Powerwall 3 is the most recognized name in home energy storage — and for good reason. With 13.5 kWh of usable capacity, an integrated solar inverter, and seamless backup transition, the Powerwall is built to power your entire home through any outage.

Key Features:

  • 13.5 kWh usable capacity per unit
  • Stack up to 4 units for 54 kWh of total storage
  • Integrated solar inverter (no separate hardware needed)
  • 11.5 kW continuous power output
  • Tesla app monitoring and control
  • 10-year warranty

Best For: Homeowners who want a sleek, all-in-one solution with the strongest brand recognition and a proven track record.

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Key Features:

  • 15 kWh usable capacity per unit
  • Stack up to 15 units for 225 kWh of storage
  • aGate smart energy management hub included
  • 10 kW continuous / 18 kW peak power
  • Works with new or existing solar systems
  • 15-year warranty (longest in the industry)
  •  
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FranklinWH aPower 2

Smart Energy Management, Built for the Whole Home

FranklinWH is the fastest-growing battery storage brand in America — and it’s quickly becoming the top choice for DFW homeowners who want maximum flexibility. With 15 kWh of usable capacity per unit and intelligent load management through the FranklinWH aGate, this system gives you whole-home backup with smart control over every circuit.

Best For: Homeowners who want the longest warranty, the most flexible installation options, and intelligent control over what gets powered during an outage.

Battery Systems

EcoFlow Power Systems

Scalable, Modular Energy Storage

EcoFlow brings flexible, modular battery storage to homes that need a customized approach. Whether you’re starting small or planning to expand over time, EcoFlow systems scale with your needs — making them ideal for partial-home backup, ADUs, workshops, or homeowners who want to phase in their investment.

Best For: Homeowners who want flexibility, faster install timelines, or a phased approach to building out their backup power.

Key Features:

  • Modular design — start small and expand
  • High round-trip efficiency
  • Smart app control and monitoring
  • Compatible with new or existing solar
  • Fast installation timelines
  • 10-year warranty
Get an EcoFlow Quote

Compare Battery Systems Side-by-Side

Feature Tesla Powerwall 3 FranklinWH
aPower 2		 EcoFlow
Usable Capacity 13.5 kWh 15 kWh Modular —
Max Stackable 4 units (54 kWh) 15 units (225 kWh) Scalable —
Continuous Power 11.5 kW 10 kW Varies —
Warranty 10 years 15 years 10 years —
Solar Compatible ✓ Integrated ✓ Works with any ✓ Works with any —
Whole-Home Backup ✓ ✓ ✓ —
Smart App Control ✓ ✓ ✓ —
Why Choose us

Why DFW Homeowners Choose Battery Storage

Why Add Battery Storage to Your Dallas Home?

Backup Power During Outages

When Oncor goes down, your battery takes over instantly. No noise, no fuel, no fumes — just power that keeps your home running while the rest of the neighborhood goes dark.

Lock In Your Energy Costs

Pair your battery with solar and you can dramatically reduce — or even eliminate — your dependence on the grid. Stop renting power from utility companies and start producing and storing your own.

Maximize Your Solar Investment

If you already have solar panels, battery storage lets you use the energy you produce after the sun goes down. Without a battery, excess solar production goes back to the grid. With one, it stays in your home.

Time-of-Use Rate Savings

With variable Texas electricity rates, batteries let you charge during cheap off-peak hours and discharge during expensive peak hours — lowering your monthly bill automatically.

Increase Your Home Value

Battery storage is one of the most desirable home upgrades on the market today. Studies consistently show solar + battery systems increase resale value across Texas markets.

Peace of Mind

Whether it's a winter storm, a summer heat wave, or a random transformer failure — your family stays safe, comfortable, and powered.

HOW IT works

How Our Plumbing Services Work

We make plumbing simple, reliable, and stress-free. From your first call to project completion, our certified experts handle every step with precision and care.

Free Consultation

We start with a no-pressure conversation about your home, your energy goals, and your concerns. We'll review your Oncor bill, your existing electrical setup, and whether you already have solar.

Custom System Design

Our certified engineers design a battery system tailored to your home — including which circuits to back up, what size system makes sense, and which battery brand best fits your needs.

Permitting & Approvals

We handle every permit, every Oncor interconnection application, and every inspection. You don't lift a finger.

Professional Installation

Our licensed Texas electricians install your battery system in 1–2 days. Clean, code-compliant, and built to last.

Activation & Training

Once your system is live, we walk you through the app, show you how to monitor performance, and make sure you understand exactly how your new system works.

Service Area

Serving All of Dallas-Fort Worth

Prometheus Power Solutions is a locally owned and operated battery storage installer based in the DFW Metroplex. We proudly serve homeowners across:

  • Dallas
  • Fort Worth
  • Plano
  • Frisco
  • McKinney
  • Arlington
  • Irving
  • Garland
  • Mesquite
  • Richardson
  • Carrollton
  • Lewisville
  • Allen
  • Grapevine
  • Southlake
  • Colleyville
  • Keller
  • Coppell
  • Flower Mound
  • Highland Park
  • University Park
  • Rockwall
  • Denton
  • Mansfield
  • Grand Prairie
  • Euless
  • Bedford
  • Hurst

Don’t see your city? Give us a call — we likely service your area.

FAQ

Frequently Asked Questions

How much does a home battery system cost in Dallas?

Battery storage system costs vary based on capacity, brand, and installation complexity. Most DFW homeowners invest between $15,000 and $40,000 for a quality battery system. We offer financing options to make backup power affordable, and the Section 25D residential clean energy credit may apply for solar-paired systems. Get a free quote for your exact pricing.

Yes. FranklinWH and EcoFlow systems are designed to work with existing solar setups from any installer. Tesla Powerwall 3 can also be retrofitted, though it's optimized for new installations. We'll evaluate your current system and recommend the best path forward.

It depends on your battery capacity and what you're powering. A single 13.5–15 kWh battery can power essential loads (fridge, lights, internet, fans) for 1–3 days. Stacking multiple batteries — or pairing with solar — can extend that to indefinitely.

No. Battery storage can be installed as a standalone backup solution that charges from the grid. Many DFW homeowners install batteries first and add solar later.

Most battery installations are completed in 1–2 days. The full process from consultation to activation typically takes 4–8 weeks, including permitting and Oncor approvals.

For most DFW homeowners — yes. Between grid reliability concerns, rising Oncor rates, time-of-use billing, and Texas's vulnerability to extreme weather, battery storage delivers real value beyond just backup power.

Warranties range from 10 years (Tesla, EcoFlow) to 15 years (FranklinWH). All systems we install come with full manufacturer warranties plus our local installation warranty.

Ready to Power Your Home With Battery Backup?

Get a free, no-pressure consultation with one of DFW’s most trusted battery storage installers. We’ll review your home, your goals, and your options — and design a system built specifically for you.

No high-pressure sales. No misleading numbers. Just honest answers from local experts who live and work in Dallas-Fort Worth.

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call : 817-523-9029