Generac Batteries vs. Generac Generators: Which Is Better for an Arizona Home?
When most homeowners hear the name Generac, they immediately think of a standby generator. However, Generac now offers Arizona homeowners more than one way to protect their homes from a power outage.
You can install a traditional Generac standby generator, a Generac PWRcell battery system, or potentially design a broader home-energy system using multiple technologies.
Which option is right for your home? The answer depends on what you want to power, how long you want backup power to last, whether you have solar panels, and whether natural gas or propane is available at your property.
What Is a Generac Standby Generator?
A Generac home standby generator is permanently installed outside your home and connected to your electrical system through a transfer switch.
When the utility power goes out, the generator automatically starts and supplies electricity to selected circuits or, when properly sized, much of the entire home. It typically runs on natural gas or propane.
Unlike a portable generator, a standby generator does not need to be rolled outside, connected with extension cords, or started manually during an outage.
Generac offers residential standby generators in several sizes. Smaller systems may protect essential circuits, while larger units can support air conditioning and other major household loads when the entire system is designed and installed correctly.
Advantages of a Generac standby generator
It can provide power through an extended outage as long as fuel remains available.
It starts automatically when utility power fails.
Larger systems can support air conditioning and other substantial loads.
It is a familiar and proven backup-power solution.
Remote monitoring may be available through Generac’s Mobile Link platform.
Things to consider
A standby generator requires fuel, produces engine noise and exhaust, and needs periodic maintenance. Installation may also involve gas plumbing, electrical work, permits, placement requirements, and a concrete or prepared mounting surface.
The equipment price advertised online normally does not represent the complete installed cost.
What Is a Generac PWRcell Battery?
The Generac PWRcell 2 is a rechargeable home battery system. It stores electricity that can be used during an outage or when electricity from the utility is most expensive.
Unlike a generator, the battery does not burn natural gas or propane. It operates quietly and can respond almost immediately when the grid goes down.
The PWRcell 2 is modular. Generac lists configurations from 9 to 18 kilowatt-hours of storage in one battery cabinet. Two cabinets can be connected to one inverter to provide up to 36 kilowatt-hours of storage. Larger designs may be possible depending on the home and system configuration.
A Generac battery can also be paired with solar, allowing solar panels to recharge the battery when sunlight and system conditions permit. That can make a major difference during an extended Arizona outage.
Advantages of a Generac battery
It operates quietly and produces no fuel-burning exhaust at the home.
It can provide nearly instantaneous backup power.
It can work with solar to store energy for later use.
It may help homeowners manage time-of-use electricity rates.
Its modular design allows storage capacity to be matched to the home.
It requires less routine engine maintenance than a generator.
Things to consider
Every battery has a limited amount of stored energy. Once that energy has been used, the battery must be recharged from solar or the electrical grid.
How long a battery lasts during an outage depends on its capacity and what the homeowner chooses to power. Running air conditioning, electric water heating, pool equipment, ovens, clothes dryers, or electric-vehicle charging can drain a battery much faster than powering lights, a refrigerator, internet equipment, fans, and a few outlets.
Generac Battery vs. Generator: The Main Differences
Length of backup
A generator can continue operating during a long outage as long as its fuel supply remains available.
A battery’s runtime is determined by its usable stored energy, the electrical demands placed on it, and whether solar is available to recharge it.
Noise
A battery is very quiet during normal operation.
A generator uses an engine, so homeowners should expect noise while it is running.
Fuel
A Generac standby generator normally requires natural gas or propane.
A Generac battery stores electricity and does not require fuel delivery or an operating natural-gas connection.
Solar compatibility
A home battery is especially attractive for homeowners who already have solar or plan to install it. Solar can generate electricity during the day and potentially recharge the battery for use at night.
A traditional generator does not store solar energy.
Air-conditioning support
Both technologies may be capable of supporting air conditioning, but only when the system is properly designed for the unit’s starting and running requirements.
Generac states that appropriately configured PWRcell 2 systems can support substantial loads, including air conditioning. However, Arizona homeowners should never assume that every battery or generator configuration will start and continuously operate every air conditioner.
The contractor must evaluate the home’s electrical service, air-conditioning equipment, starting requirements, desired backup loads, and expected runtime.
Maintenance
A generator contains an engine and requires scheduled maintenance and periodic testing.
A battery has no fuel-burning engine, although the complete energy-storage system should still be monitored and maintained according to the manufacturer’s instructions.
Which Option Is Better for an Arizona Home?
A Generac PWRcell battery may be the better fit if you:
Want quiet backup power
Already have solar or plan to add it
Want to use stored energy during high-cost utility periods
Primarily need essential loads backed up
Do not have easy access to natural gas or propane
Prefer a system without a fuel-burning engine
A Generac standby generator may be the better fit if you:
Want backup power during a prolonged outage
Have reliable access to natural gas or a sufficiently sized propane supply
Need to support several large electrical loads
Want automatic backup without depending on stored battery capacity
Are comfortable with engine noise, fuel use, and periodic maintenance
Can You Combine a Battery, Solar, and a Generator?
Some homeowners want more than one layer of protection.
A properly designed home-energy system may use solar during the day, battery storage for quiet short-term backup and energy management, and a generator for extended outages. Compatibility, controls, transfer equipment, operating sequence, and available functionality must all be confirmed before installation.
Do not assume that every Generac battery, inverter, generator, or transfer switch can be connected in every possible configuration. A qualified contractor should design the entire system as one coordinated project.
The Best Answer Starts With Your Home
There is no single backup-power solution that is best for every Arizona homeowner.
The correct system depends on:
Your monthly electricity use
The size and number of your air conditioners
Which appliances and circuits you want to protect
Whether you have or want solar panels
Your utility’s rate plan
Natural-gas or propane availability
Your expected backup duration
Your property and installation requirements
Your budget and financing preferences
The goal is not simply to purchase the biggest battery or generator. It is to build a backup system around the loads that matter most to your household.
Compare Your Home Backup Options
Backup Ready helps Arizona homeowners understand their battery, generator, and solar-plus-battery options without making the process unnecessarily complicated.
Tell us about your home, utility provider, and backup-power goals. We can help connect you with a qualified Arizona contractor who can evaluate the property and recommend an appropriately sized solution.
Ready to compare your options? Get your personalized home backup recommendations today.
Backup Ready is an educational and referral service. Product availability, specifications, pricing, incentives, compatibility, and installation requirements can change. All systems must be evaluated and installed by appropriately qualified and licensed professionals.
