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Generac Generators & Battery Backup Systems in Florida

Protect your Florida home with reliable backup power. Explore Generac whole-home standby generators, PWRcell 2 battery storage, and integrated energy solutions.

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Generac home standby generator installed on a gravel pad beside a two-story home with a lit back porch

Straight answer

What Is a Generac Home Standby Generator?

A Generac home standby generator is a permanently installed backup generator that runs on natural gas or liquid propane. When utility power fails, it starts automatically and an automatic transfer switch moves your selected circuits to generator power within seconds.

Automatic backup power
Starts on its own
Senses the outage and starts within seconds
Natural gas or propane
Your choice of fuel
Connects to an existing or new gas supply
Whole-home or essential circuits
Sized to your loads
Coverage depends on capacity and configuration
Generator pricing
Quoted per project
After an on-site electrical and fuel assessment

Why it matters

Never Be Without Power When It Matters Most

Florida homeowners know the pattern. A hurricane or tropical storm moves through, lines come down, and restoration can take days in hard-hit neighborhoods. Even outside storm season, afternoon thunderstorms, lightning strikes and equipment failures on the utility side can knock power out with no warning.

An outage quickly becomes more than an inconvenience. Refrigerators and freezers start warming within hours, air conditioning stops in the middle of summer heat and humidity, and internet and phone charging go dark right when you need updates. Homes with well pumps lose water, sump and lift pumps stop, and anyone who depends on powered medical equipment needs a plan that does not rely on the grid.

A Generac home standby generator is built for exactly this situation. It is not a portable unit you drag out and refuel by hand. It is a permanent backup power system that watches for an outage and responds on its own, so your home keeps running whether you are there or not.

How it works

How Generac Standby Generators Work

The generator sits on a pad outside your home and connects to a natural gas line or a propane tank. An automatic transfer switch installed at your electrical service ties it all together.

  1. Step 01

    Utility Power Goes Out

    The transfer switch senses the loss of utility voltage.

  2. Step 02

    Generator Starts

    The generator starts automatically within seconds.

  3. Step 03

    Switch Transfers

    Designated circuits move to generator power.

  4. Step 04

    Grid Returns

    Loads transfer back and the generator cools down and shuts off.

Benefits

Benefits of a Generac Whole-Home Generator

Actual backup coverage always depends on generator capacity, the electrical loads you choose to back up, and how the system is installed.

Automatic Backup Power

No cords, no manual start. The system responds to an outage even when nobody is home.

Extended Operation With Adequate Fuel

On a natural gas line or a properly sized propane tank, the generator keeps running as long as fuel is available and the unit is maintained.

Protection for Essential Systems

Keep refrigeration, lighting, internet, well pumps and, with the right size, central air conditioning running.

Natural Gas or Propane

Generac Guardian Series units are rated for natural gas or LP operation, so you can use the fuel available at your property.

Automatic Transfer Switching

Generac offers 100 amp circuit switches and 200 amp service rated smart switches, depending on the model and your service.

Remote Monitoring

Guardian Series units include Wi-Fi connectivity for the Mobile Link app, which shows generator status, alerts and exercise schedules.

Professional Installation and Sizing

A licensed load review and correct placement matter as much as the generator itself.

Sizing

Choosing the Right Generac Generator Size

Generator size is measured in kilowatts (kW). Generac's current air-cooled Guardian Series covers 10, 14, 18, 20, 22, 24 and 26 kW standby ratings, with the 26 kW unit marketed for whole-house coverage. Choosing between them is about how much your home needs at the same moment, not just its square footage.

Central air conditioning is usually the biggest factor in Florida. Compressors and motors, including AC units, pool pumps and well pumps, draw a surge of current when they start, so the generator must handle those starting loads on top of everything already running. Refrigerators, freezers, electric water heaters, ranges and dryers add up quickly, and medical equipment needs dependable priority.

We also look at your electrical service capacity, typically 200 amps on most homes, and whether you want every circuit backed up or a selected group of essential circuits. Two homes with the same square footage can need very different generators, so no single size is right for every house.

Find the Right Generac Generator for Your Home

Tell us what you want to keep running. We review your panel, loads and fuel supply before recommending a size.

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Generac battery backup

Generac PWRcell 2: Smart Home Battery Backup

PWRcell 2 is Generac's rechargeable home battery system. It stores electricity from compatible solar panels or the grid so your home can use that energy during an outage or at other times when it helps. Capacity, power output and backup time depend on the installed configuration and how much electricity your home uses. Coastal Energy is an authorized Generac battery installer, so your PWRcell 2 design and installation are handled by our own licensed Florida team.

  • 9 to 18 kWh Storage per cabinet

    Modular battery cabinet

  • Up to 36 kWh Two cabinets

    Stacked on one inverter

  • Up to 11.5 kW Max continuous power

    Only with two cabinets and at least 7 modules

  • AC-coupled System design

    Automatic backup through the Smart Disconnect Switch

  • PWRmanager Load management

    Smart monitoring and circuit-level control

  • 10 years Manufacturer warranty

    Subject to Generac's warranty terms

Explore Generac Battery Backup

Tell us what you want to keep running and whether you have solar. We will size a PWRcell 2 system around your home.

Explore Generac Battery Backup

Battery storage

How Does Generac PWRcell 2 Work?

Recharging from solar during an outage depends on your system configuration, available sunlight and the equipment installed.

  1. Step 01

    Charge

    Store electricity from compatible solar panels or the utility grid.

  2. Step 02

    Store

    Keep energy available in the battery for later use.

  3. Step 03

    Protect

    Automatically supply backup power during a grid outage.

  4. Step 04

    Manage

    Monitor usage and prioritize household loads with PWRmanager.

Extended backup

Combine a Generac Generator and PWRcell Battery for Extended Backup Power

In Generac's system design, the Smart Disconnect Switch is the hub that connects solar, battery storage, the grid, your home and a compatible standby generator: Solar Panels → PWRcell 2 Battery → Home, with the generator tied in through the Smart Disconnect Switch. Integration depends on a compatible Generac generator model, the right transfer equipment, system configuration and professional installation. Not every existing Generac generator can be paired with PWRcell 2.

  • Battery First

    Stored energy supports the home quietly during an outage.

  • Generator When Needed

    When battery levels get low, a compatible generator starts automatically.

  • Power and Recharge

    In supported setups the generator powers the home and recharges the battery, subject to fuel.

  • Smart Load Priorities

    PWRmanager can shed non-essential loads to stretch backup time.

  • One Integrated Plan

    Solar, battery storage and fuel-powered generation working together.

Home with rooftop solar, Generac PWRcell 2 battery cabinets on the wall and a Generac standby generator beside it

Generator or battery

Generac Generator vs. Generac PWRcell 2: Which Is Right for You?

FeatureGenerac Standby GeneratorGenerac PWRcell 2
Energy sourceNatural gas or propaneStored electricity
Automatic backupYesYes
Solar integrationDepends on system designYes, with compatible equipment
Operating soundEngine noiseQuiet, no combustion engine
Energy replenishmentFuel supplySolar or grid charging
MaintenancePeriodic engine maintenanceNo engine maintenance
Backup durationDepends on fuel availabilityDepends on stored energy and household usage
Energy managementModel dependentSmart monitoring and load management

For homeowners worried about long, hurricane-related outages, a combined system can pair quiet battery power for everyday outages with a generator that keeps going when stored energy runs low.

Battery comparison

Generac PWRcell 2 vs. Tesla Powerwall

We install both, so here is a side-by-side of the current products: Generac PWRcell 2 and Tesla Powerwall 3. Figures come from each manufacturer's published specifications.

FeatureGenerac PWRcell 2Tesla Powerwall 3
Usable storage9 to 18 kWh per cabinet13.5 kWh per unit
Continuous powerUp to 11.5 kW (two cabinets, 7+ modules)11.5 kW per unit
ExpandabilityUp to 36 kWh, two cabinets on one inverterAdd Expansion units or more Powerwall 3 units
Solar integrationAC-coupled with compatible solarBuilt-in solar inverter
BackupAutomatic, through the Smart Disconnect SwitchAutomatic, through the Tesla Gateway
Monitoring and controlsGenerac app, PWRmanager load controlTesla app
Generator compatibilityDesigned to integrate a compatible Generac standby generatorConfiguration dependent; confirmed during design
Manufacturer warranty10 years, subject to terms10 years, subject to terms

Neither battery is right for every home. We compare both against your loads, solar plans and backup goals before recommending one.

Which Backup Option Fits Your Home?

If you already have solar or plan to add it, a battery such as Generac PWRcell 2 or Tesla Powerwall recharges from your panels during a multi-day outage and lowers your power bill the rest of the year. If you want to run a large home for many days on a reliable gas supply, a standby generator is often the stronger fit. We will walk you through both honestly.

Explore Tesla PowerwallCompare home batteriesGenerac PWRcell 2 batterySolar panel installation

Cost

How Much Does a Generac Generator Cost in Florida?

Generac generator cost varies widely from one home to the next, so we quote every installation per project after an assessment. These are the factors that shape your installed price.

Generator Capacity and Equipment

Larger kW ratings cost more and the model selected sets the base equipment price.

Automatic Transfer Switch

Essential-circuit switch or whole-home service rated switch.

Electrical Installation

Wiring distance, panel work and any service upgrades.

Natural Gas or Propane Infrastructure

Gas line runs, meter upgrades, or a new propane tank installed by a gas professional.

Pad, Site Prep and Setbacks

Concrete or approved base, grading, and code-required clearances from openings.

Permits and Inspections

Electrical, gas and local building permits vary by county and city.

Get a Generac Generator Estimate

We assess your home and give you a written price before any work begins.

Free Estimate

Installation

Professional Generac Generator Installation in Florida

Backup generator installation is part electrical project, part fuel project, and part site planning. Our process keeps those pieces coordinated.

  1. 01

    Home Energy and Electrical Assessment

    We review your panel, service size and the loads you want to protect.

  2. 02

    Generator Selection and Sizing

    We match a kW rating and transfer switch to your real demand, including starting loads.

  3. 03

    Fuel Supply and Site Planning

    We plan the gas or propane supply and a location that meets clearance, exhaust and flood considerations.

  4. 04

    Permitting and Electrical Installation

    We pull permits, set the unit, install the transfer switch and wire it to code.

  5. 05

    System Testing and Homeowner Orientation

    We test a simulated outage, then show you how the controller and Mobile Link app work.

Placement Matters in Florida

Generac lists its Guardian Series for installation as close as 18 inches to a structure, but only away from doors, windows and fresh air intakes and in line with local codes. In coastal Florida we also consider flood elevation, drainage, wind exposure and service access. A generator is not designed to run while flooded, and no system can promise power through every hurricane condition, which is why careful site planning comes first.

Generac standby generator beside the stairs of a home at night, running while the porch lights stay on

Why Coastal Energy

Why Choose Coastal Energy?

Authorized Generac Installer

We are authorized by Generac to install its home standby generators and PWRcell batteries.

Licensed Florida Electrical Contractor

Electrical license EC13013993 and certified contractor license CCC1335978.

Home Energy Systems Experience

We have installed solar in Florida since 2019, with more than 1,000 solar systems completed.

Tesla Powerwall Expertise

More than 3,000 Powerwall installs, so we can compare generator and battery backup honestly.

One Team for Your Home

Solar, battery storage, metal and tile roofing and electrical work from a single Florida company.

Florida Service Coverage

Offices in Fort Myers, Naples and Miami.

Answers

Frequently Asked Questions

How Much Does a Generac Whole-House Generator Cost in Florida?
Installed cost depends on generator size, the transfer switch, electrical work, gas or propane infrastructure, the pad, and local permits. A home that already has natural gas near the service usually costs less than one needing a new propane tank and long wire runs. We quote each project after an on-site assessment rather than publishing a one-size price.

Can a Generac Generator Power My Entire House?
Many homes can be fully backed up with a correctly sized generator and a 200 amp service rated transfer switch. Larger homes with multiple AC systems or heavy electric loads may need load management or a focus on essential circuits. Whole-home coverage is possible, but it is confirmed by calculation, not assumed.

Can Generac Generators Run on Natural Gas or Propane?
Yes. Generac Guardian Series home standby generators are rated for natural gas or liquid propane (LP) operation. Natural gas comes from your utility line, while propane is stored in a tank on your property. Power output can differ slightly between the two fuels, which we account for when sizing your system.

How Often Does a Generac Generator Need Maintenance?
Standby generators run a short, low-speed self-test on a regular schedule, and the controller tracks maintenance intervals. Like any engine they need periodic oil, filter, spark plug and battery service, with more frequent attention after long run times. Following Generac's maintenance schedule also helps protect your manufacturer warranty.

What Is the Warranty on a Generac Home Standby Generator?
Generac's current Guardian Series spec sheets list a 5 year limited warranty on the generator, provided and administered by Generac under its own terms. That manufacturer warranty is separate from any workmanship warranty covering our installation work, which we spell out in writing in your proposal.

What Is the Generac PWRcell 2 Battery?
PWRcell 2 is Generac's AC-coupled home battery system. It includes a Smart Disconnect Switch, an inverter, one or more battery cabinets, PWRmanager load management and an ecobee smart thermostat, and it stores electricity from compatible solar panels or the grid.

Can Generac PWRcell 2 Power an Entire House?
It depends on the configuration and your loads. Generac rates up to 11.5 kW continuous only with two cabinets and at least 7 modules; smaller systems deliver less. PWRmanager can shed non-essential loads, and we confirm whole-home or essential-circuit coverage by calculation.

Can a Generac Generator Recharge a PWRcell Battery?
With a compatible Generac standby generator connected through the Smart Disconnect Switch, the generator can start when battery levels get low and power the home while recharging the battery, subject to fuel. Not every existing generator is compatible, so we verify the model first.

What Is the Difference Between Generac PWRcell 2 and Tesla Powerwall?
PWRcell 2 is modular at 9 to 18 kWh per cabinet and is designed to integrate a compatible Generac generator. Powerwall 3 stores 13.5 kWh per unit with a built-in solar inverter and 11.5 kW continuous output. Both carry 10 year manufacturer warranties.

Can I Add Generac Battery Storage to an Existing Solar System?
Often, because PWRcell 2 is AC-coupled, but it depends on your existing equipment and electrical service. We review your system before recommending it.

What Size Generac Generator Do I Need for My Home?
It depends on what must run at the same time. Central AC, well pumps, pool pumps and electric appliances drive the size, along with motor starting surges. Generac's air-cooled Guardian Series ranges from 10 kW to 26 kW. We do a load review of your panel and appliances to recommend a size, instead of guessing from square footage.

Do Generac Generators Turn On Automatically?
Yes. A home standby generator works with an automatic transfer switch that senses a utility outage. The generator starts within seconds, the switch moves your designated circuits to generator power, and when utility power returns it transfers back and the generator shuts down after a cool-down period. You do not need to be home.

How Long Can a Generac Generator Run During a Power Outage?
On a natural gas line, a standby generator can keep running for an extended outage as long as gas service continues and the unit is maintained. On propane, runtime depends on tank size, how full it is, and how much load the generator carries. We help you plan fuel capacity around the outage length you want to cover.

Are Generac Generators Suitable for Florida Hurricanes?
They are widely used for hurricane backup. Guardian Series enclosures are aluminum with a corrosion-resistant powder coat finish. Performance still depends on correct placement above likely flood levels, a reliable fuel supply, and maintenance. No generator can guarantee power through every storm, especially if the unit or gas service is flooded or damaged.

Is a Generac Generator Better Than a Tesla Powerwall?
Neither is better for everyone. A Generac generator suits homeowners who want long runtimes on a gas supply. A Powerwall is quiet, needs no fuel or engine service, and pairs with solar to recharge and cut daily power costs. As an authorized Generac generator and battery installer and a Tesla Powerwall installer, we can help you compare both options for your home and budget.

How Much Energy Can a Generac PWRcell 2 Store?
Each battery cabinet holds 9 to 18 kWh depending on the number of modules. Two cabinets stacked on one inverter reach up to 36 kWh.

Can Generac PWRcell 2 Work With Solar Panels?
Yes. It is an AC-coupled system that can store energy from compatible solar panels, and recharge from them when sunlight and the configuration allow.

How Long Will a Generac Home Battery Last During an Outage?
It depends on battery capacity, how much your home uses, the inverter power and any solar recharging. We estimate runtime only after reviewing your loads and the system design.

What Is the Generac PWRcell 2 Warranty?
Generac lists a 10 year warranty on PWRcell 2, subject to the terms in its warranty statement. It is separate from our workmanship warranty on installation.

How Much Does a Generac PWRcell 2 Installation Cost in Florida?
Cost depends on the number of cabinets and modules, electrical work, solar or generator integration and permits. We quote each PWRcell 2 project after an assessment rather than publishing a one-size price.

Keep reading

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SPAN Smart Panel

Smart circuit control for backup power planning.

Protect Your Florida Home with Generac Backup Power

Prepare for unexpected outages with a professionally designed Generac generator, PWRcell 2 battery, or combined system. Coastal Energy can help you explore backup power solutions for your home.

Free Estimate(239) 299-8567