Tesla Powerwall Installer in Florida

Whole home battery backup engineered for hurricane season, installed by a Tesla Powerwall installer licensed in Florida since 2019.

Google reviews

Free Instant Estimate Contact

Tesla Energy

Certified Installer

FL Licensed

Solar + Roofing + Electrical

Veteran Owned

Led by those who have served

Four Tesla Powerwall units installed on a Florida home exterior wall by Coastal Energy

Straight answer

How Much Does a Tesla Powerwall 3 Cost in Florida?

A single Powerwall 3 starts at $15,000 installed in Florida through our Tesla Powerwall installation team. The setup we quote most often is a Powerwall 3 plus one Expansion unit, at $25,000 installed. Two full Powerwall 3 units run $29,000. Each unit stores 13.5 kWh usable. Your exact quote is confirmed after a site survey.

Usable capacity: 13.5 kWh; Per Powerwall 3 unit
Continuous output: 11.5 kW; On-grid and backup power
Starting at: $15,000; Single Powerwall 3 installed with a Gateway 3
Protection: 5 years; Workmanship warranty, plus Tesla's 10 year equipment warranty

Pricing shown is typical and a starting point. Your exact quote is confirmed after a site survey and depends on roof condition, electrical service, equipment choices and local permitting.

Get an accurate quote

Powerwall 3 specs

What Is Actually Inside a Powerwall 3

Powerwall 3 has an integrated solar inverter built in, which is new compared to Powerwall 2, so it can pair directly with new solar or bolt onto an existing array.

Energy capacity: 13.5 kWh usable
Solar input: 11.5 kW; 6 inputs with MPPTs
Inverter efficiency: 97.5%; Solar-to-grid
Motor start: 185 LRA; Handles ACs and entire home's electrical demand (200A)
Dimensions: 43.25 x 24 x 7.6 in; 287 lbs
Operating range: -4°F to 122°F; Flood and dust resistant
Mounting: Indoor or outdoor; Wall or floor mount
Warranty: 10 years; Equipment, unlimited cycles

Cost ranges

Powerwall 3 Configuration Pricing in Florida

The Powerwall 3 plus one Expansion unit is the setup we quote most often, since it gives most homes meaningful whole home backup at a lower cost than two full Powerwall 3 units. Prices below are starting points; your exact quote is confirmed after a site survey.

Configuration	Usable capacity	Starting installed price
Powerwall 3 + Expansion (most common)	27 kWh	$25,000
1 Powerwall 3 (single unit)	13.5 kWh	$15,000
2 Powerwall 3 units	27 kWh	$29,000
Expansion unit added to existing system	+13.5 kWh	$9,500 each
Battery added to existing solar	13.5 kWh	Quoted after evaluation

Every Powerwall install includes the Tesla Backup Gateway. Prices are starting points and may change based on electrical service, conduit runs and permitting. Federal residential tax credits have expired; depreciation may be available depending on your tax situation, and we can connect you with Solar ITC to review it.

Sizing

How Many Powerwalls Does Your Home Actually Need

We size battery capacity from your daily kilowatt hour usage, not a generic rule of thumb. A pool pump, well pump or central AC changes the math fast.

One Powerwall 3

Covers essential loads (refrigerator, some lighting, internet, a few outlets) for most Florida homes during an overnight or multi hour outage. Backs up a 200-amp utility meter. Installed at $15,000.

Powerwall 3 Plus Expansion

Our most commonly quoted setup at $25,000 installed. Covers a full home including AC cycling for a solid stretch of a multi day storm outage when paired with solar recharge.

Two Powerwall 3 Units

$29,000 installed. Whole home backup including pool equipment, well pump and EV charging, common on larger homes. Two units can back up a 400-amp utility meter.

Backup Gateway Required

Every Powerwall install needs a Tesla Backup Gateway to manage the transition from grid power to battery power, which we include in every quote.

Existing Solar Customers

A Powerwall 3 can be added to existing solar with or without replacing your existing inverter, because it can be AC-coupled. We evaluate your inverter and array before quoting.

Compare

Powerwall 3 vs Other Home Battery Options

Every battery on the market has tradeoffs. Here is how Powerwall 3 stacks up against the alternatives we also install.

Battery	Usable capacity	Continuous output	Solar inverter built in	Warranty
Tesla Powerwall 3	13.5 kWh	11.5 kW	Yes	10 years
Enphase IQ Battery 10C	10.5 kWh	5.12 kW	No, uses microinverters	15 years
EcoFlow Ocean Pro	12 - 24 kWh	7.2 kW	No	10 years

Continuous output matters more than capacity if you want central AC or a well pump to run through an outage. Powerwall 3 has the highest continuous output of the batteries we install.

Storm season

What Powerwall Actually Does During a Florida Hurricane

When FPL, LCEC, Duke Energy or your utility loses power, the Backup Gateway senses the outage in under a second and islands your home from the grid automatically. There is no generator to start, no fuel to store and no manual transfer switch to throw in the dark.

If the storm passes and skies clear while the grid is still down, which happens often after major named storms in Southwest Florida, your solar array keeps recharging the Powerwall during the day so you are not simply running down a fixed reserve.

We also program the Tesla app for Storm Watch, which automatically charges your Powerwall to 100% ahead of a forecast storm using grid power, so you start the event with a full battery instead of whatever charge happened to be on hand.

A main service upgrade is rarely needed to add Powerwall 3, because we land backed up breakers directly in the Tesla Gateway.

Automatic outage detection and transfer, no manual switch
Storm Watch pre-charges the battery ahead of forecast storms
Solar recharges the battery during multi day outages
Flood and dust resistant enclosure rated for outdoor mounting

Tesla app screen showing home energy usage and battery status

Install timeline

Tesla Powerwall Installation Timeline in Florida

01
Load and Usage Review
We pull your last 12 months of utility usage and identify which circuits need backup coverage.
02
Site Survey
We inspect your main panel, meter location and wall or pad space for the Powerwall and Backup Gateway.
03
Permitting
Electrical permit and utility interconnection paperwork filed with your county and utility, typically 3 to 6 weeks.
04
Installation
Most Powerwall installs, including the Backup Gateway, are completed in 1 to 2 days.
05
Commissioning
We test the automatic transfer, walk you through the Tesla app, and set your backup and Storm Watch preferences.

Warranty

What the Powerwall Warranty Covers

Tesla backs every Powerwall 3 with a 10 year equipment warranty covering the battery, inverter and enclosure with no cycle limit, meaning you can charge and discharge it daily without voiding coverage. Tesla also guarantees the battery retains a minimum usable capacity through the warranty period.

Every Tesla Powerwall installation carries our 5 year Coastal Energy workmanship warranty, measured from the date of system activation and fully transferable to the next owner. That covers our installation work: the mounting, conduit, wiring and penetrations. Tesla's 10 year equipment warranty covers the Powerwall hardware itself, and our service division handles Tesla-authorized warranty claims directly.

Answers

Frequently Asked Questions

How Much Does a Tesla Powerwall Cost?

Tesla Powerwall cost depends on unit count, Gateway configuration and panel work. Installed pricing starts at the range shown on this page and is confirmed after we review your panel and load list.

Battery Backup vs Generator for Hurricanes: Which Is Better?

In a battery backup vs generator for hurricanes comparison, batteries switch over instantly, need no fuel and run silent, while generators run longer on a fuel supply. Most generator vs battery backup Florida decisions come down to whether you have solar to recharge from.

Do You Offer Home Battery Backup Installation Across Florida?

Yes. Home battery backup installation and solar battery backup Florida wide are core work for us, whether the goal is battery backup for power outages day to day or battery storage for hurricane season.

What is the most common Powerwall configuration you install?

A Powerwall 3 plus one Expansion unit at $25,000 installed. It gives most Florida homes 27 kWh of usable capacity, enough for meaningful whole home backup, at a lower cost than two full Powerwall 3 units.

Can I add a Powerwall to solar panels I already have?

In most cases yes. The Powerwall 3 can be AC-coupled, so it can be added with or without replacing your existing inverter. We evaluate your inverter and array during the site survey, then integrate the Powerwall 3 and a Backup Gateway into your current system.

Do I need a main service upgrade to add Powerwall 3?

Rarely. We land backed up breakers directly in the Tesla Gateway, which avoids the cost and delay of a full service upgrade for most Florida homes.

How long does Powerwall installation take?

The physical install is usually 1 to 2 days. Including electrical permitting and utility interconnection approval, most projects take 3 to 6 weeks from signed contract to commissioning.

How Do You Handle Powerwall Sizing for a Hurricane Outage?

Powerwall sizing for hurricane outage planning starts with the loads you want to keep, usually AC, refrigeration, well pump and internet, then we model multi day recharge from the array.

How Many Batteries Do I Need to Power My House?

The amount of battery storage you need depends on your essential load. One Powerwall 3 covers most critical loads overnight, two covers whole home use including central AC for many Florida homes.

How much does a Tesla Powerwall installation cost in Florida?

A single Powerwall 3 starts at $15,000 installed. The setup we quote most often, a Powerwall 3 plus one Expansion unit, runs $25,000. Two full Powerwall 3 units run $29,000, and adding an Expansion unit to an existing Powerwall system is $9,500 each. Your exact quote depends on electrical service, conduit runs and permitting.

How long will a Powerwall 3 power my house during an outage?

One Powerwall 3 covers essential circuits for roughly a day depending on load. With solar recharging it during daylight, most homes can stretch backup through a multi day outage, and the Powerwall 3 plus Expansion configuration extends whole home coverage further.

Do I need solar panels to install a Powerwall?

No. Powerwall 3 can be installed standalone for backup power and charged from the grid, though pairing it with solar lets it recharge for free during an extended outage.

Is Powerwall better than a whole home generator?

Powerwall starts instantly with no fuel to store, runs silently, and recharges from solar during a multi day outage. A generator can produce more continuous power for larger loads but needs fuel and manual maintenance.

Is Coastal Energy a Tesla Powerwall Premium Installer?

Yes. We are a Tesla Powerwall Premium Installer, which means our crews have completed Tesla's Powerwall-specific training and meet Tesla's installation quality standards for whole home battery backup.

Keep reading

Ready to Stop Worrying About the Grid?

Send us your address and a recent power bill. We size a Powerwall system, or a Powerwall plus solar system, and give you a real Florida price.

Free Instant Estimate (239) 299-8567

Free Instant Estimate