Eos Backup and Battery

Not every outage needs a generator.

If you're pricing a Generac, Kohler, or Cummins and the noise, fuel, or HOA stuff is making you hesitate, this is your lane. Most outages in Houston are a few hours. A battery handles that. Quietly, mounted on your garage wall. No fuel runs. No outdoor box. Nothing to service every year.

Side by side

Generator life. Battery life.

Three honest pairs. Generator on the left of each pair, Eos on the right. Swipe through.

Generator install in progress: gas line trench, concrete pad with rebar formwork, mud, shovels, dug up sod
Real Houston customer install: Eos battery cleanly wall mounted in a residential garage next to a window, no excavation, no outdoor equipment
Outdoor generator on side yard, permanently visible from sidewalk, HOA managed brick home
Real Houston customer install: Eos battery and electrical sub panel mounted indoors on a workshop wall, no outdoor box, curb stays clean, HOA stays quiet
Eight year old generator: exhaust stain on brick, rust, oil drip on pad, weathered
Real Houston customer install: complete Eos backup system with whole home transfer switch installed in a clean utility room
Local Houston teamLicensed, insured, permitted10 year warranty

By the Numbers

Less of the generator stuff. More of just having power.

20+
Houston outages every year
$0
Fuel cost per outage
10,000
Cycles. 20 plus years of normal use.
1 day
On site install

Runtime depends on the size you pick and how your family runs during an outage. Smaller setups cover the short Houston outages you'd actually have. Bigger setups stretch further if you're happy running lean (fridge, fans, Wi-Fi, lights, not blasting central AC). The intake below matches size to your actual house.

Megan King, Eos Advisor

Megan King

Energy Advisor

Online

Ready to see what setup makes sense for your house?

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Straight Comparison

Standby generators worked 20 years ago. Here's what's changed.

Both work. For the way outages actually go down in Houston, a battery fits better. For week long blackouts way out in the country, a generator still wins. Here's the honest scoreboard.

Loud or silent

Standby generator

Loud while it runs (about as loud as a vacuum)

Eos Battery

Silent. No engine, no moving parts.

Fuel or no fuel

Standby generator

Needs gas or propane. Stations close first when a storm rolls in.

Eos Battery

Charges from the wall. Add solar later if you want.

30 seconds or instant

Standby generator

30 second startup gap. Router resets, AC kicks back on.

Eos Battery

Already on. Your lights do not even flicker.

Yearly upkeep or none

Standby generator

Yearly oil change, filter swap, test run, service contract.

Eos Battery

Nothing to maintain. No oil, no filters, no test cycle.

Outside box or garage wall

Standby generator

Big box outside the house. Most HOAs make you ask permission.

Eos Battery

Mounts on the garage or utility room wall. HOA usually never sees it.

Loses or adds value

Standby generator

Drops in value over time, like a car.

Eos Battery

Adds to your home value, like a new AC.

When a generator is still the right call

  • • You live way out (acres of land) where power can be out for weeks at a time
  • • All electric house that needs central AC running non stop for a week or more
  • • You want one machine that keeps going as long as you can get fuel

If that sounds like you, we'll tell you straight up. The intake catches these cases. We're not trying to squeeze every house into the same setup.

The Math

If you want the receipts, tap a row.

Most people who land here aren't picking on cost alone. The Pro setup priced against a real Houston generator quote. Today's Texas propane price. One bad 7 day outage every other year. Cost ends up in the same neighborhood. The difference is everything else.

See what fits my house
Install

Generator

$8,500 to $13,000

Eos Battery

$16,472

Maintenance over 10 years

Generator

$1,500 to $3,000

Eos Battery

nothing

Fuel during a 7 day outage

Generator

$700 or more

Eos Battery

nothing

Starter battery swaps

Generator

about $225 every 2 years

Eos Battery

included, 10 year warranty

Noise or HOA fights

Generator

often

Eos Battery

never

Pricing

Real gear. Real price. Right here.

Pro is the size we usually land on. Tap the others to see what changes. The intake matches you to the right one based on your house and how you actually live in it.

Pro tier — SigenStor 1 controller + 3 battery modulesPremium tier — SigenStor 1 controller + 4 battery modulesUltimate tier — SigenStor 1 controller + 5 battery modules3 batteries

Pro

$16,472

installed, before federal tax credit

3 batteries · about 26.28 kWh usable · about 17 hours runtime

Financing available. No prepayment penalty.

How it looks installed

A few ways people set this up.

Wall mount in the garage. Indoor utility room. Visible load hub or tucked away. Same hardware, your choice on placement.

Whole-system install: controller, smart panel, stack

Whole-system install: controller, smart panel, stack

Wall mount: clean garage, no outdoor box

Wall mount: clean garage, no outdoor box

Indoor utility room: load hub + stack

Indoor utility room: load hub + stack

Night view: silent, no running engine

Night view: silent, no running engine

Up close: real customer install

Up close: real customer install

Permits and Timeline

The permit part is mostly painless. We handle it.

Texas law (SB 1252) makes residential battery permits pretty straightforward. Most Houston-area cities have it down. We file the application, deal with the inspector, and redo any minor flags at no charge.

01

System design and permitting

You send measurements and photos of the install location (garage, indoor, outdoor). We design the right system for your house, file the electrical permit with your city, and open the application with CenterPoint. Some cities turn it around in a week, others take six. We tell you what to expect for yours up front, no guessing.

Contract to power on: 3 to 6 weeks

The variable is the city, not the install. We do not start ordering equipment until the permit path is clear, so the timeline you see on day one is the timeline you get.

Common Questions

The stuff people ask before they fill out the form.

Does this actually replace a generator?

For how outages usually go here (a few hours, 20 plus times a year), yes, easily. And quietly. For something rare like the 2021 freeze, it depends on the size you pick and how your family runs during an outage. At a typical Houston household draw, a Pro setup gets you about 17 hours before you'd think about anything. If you absolutely need central AC running flat out for multiple days during a blackout, that's still a generator job and we'll say so straight up. Honest match for the typical Houston outage, not a one size fits all promise.

What does the warranty actually cover?

Honest answer, we don't see many issues. Most of our customers diagnose stuff themselves before reaching out, and the system is built solid. Here's what's actually on paper: 10 years from the manufacturer (you have to keep it online, Wi-Fi or hardwired internet, no connection means no warranty). A 5 year extended warranty is available as a separate add on. The battery is rated for 10,000 cycles, which is 20 plus years of normal use. UL listed, meets current safety and grid codes, IP66 outdoor weather rating. Installed right and kept out of direct sun, it just runs.

How does it compare to a Generac, Kohler, or Cummins quote?

Standby gens land $8,500 to $13,000 installed. Then $150 to $300 a year for maintenance and $700 or more in propane for a 7 day outage. The Pro setup is $16,472 installed, nothing to maintain, no fuel. Day one the generator looks cheaper. Add up 10 years of maintenance, fuel, and starter batteries and you end up around the same money. The difference is everything else: quiet, no HOA fight, no fuel runs, no outdoor box, instant switchover. Financing available with no prepayment penalty.

I keep hearing generator dealers do hard upsells. How is this different?

Price is on this page. No surprise add ons. No yearly service contract. No fuel deliveries to schedule. Battery is covered for 10 years. Most generator owners end up replacing the starter battery every couple years just to keep it cranking.

Will my HOA have a problem with it?

It mounts inside your garage or utility room. No outdoor box, no weekly test that fires up at 8am Saturday, no exhaust. Most HOAs do not even notice it. Still worth a quick check on your HOA rules, especially in Katy, Sugar Land, and The Woodlands.

What about a deep freeze, like when Texas froze in 2021?

When Texas froze that February, gas lines lost pressure across the state. Generators that run on natural gas had nothing to burn. A battery does not need a pipeline. It runs on what is already in the cells. Your gas furnace usually still fires (Texas furnaces work even at low pressure). The battery just runs the fan that pushes the heat around.

Do I need solar panels for this to work?

No. The battery charges from your normal grid power, same as your phone. Solar is optional. If you want panels later, they plug into the same battery with no rewiring.

What happens when I click Start Planning?

12 quick questions from Megan, our energy advisor. About 2 minutes. We use your answers to figure out the right size for your house and walk you through real numbers. A real Houston advisor follows up, not a call center.

See what setup makes sense for your house.

12 quick questions. About 2 minutes. Megan walks you through what fits.

Start planning

Licensed and insured. Factory trained on the Eos battery system. Serving Houston, Katy, Cypress, Sugar Land, Pearland, The Woodlands, Memorial, West U, Bellaire.