When it comes to finding the best backup energy source for your house, there are a lot of factors to consider. Don’t feel frustrated trying to weigh the benefits of each.

Let’s explore the pros and cons of a generator vs battery system for a backup energy source.

Why Do You Need A Backup Power Supply?

Even if you think you may not need a backup power supply, think again. It’s better to hope for the best and plan for the worst, especially the unprecedented. Take for example the deep freeze that left thousands of Texans without power for days. During that time, the price of gas skyrocketed, and frozen pipes burst in people’s homes.

Having a backup battery or generator is a great way to ensure much more than keeping the lights on during a disaster. It helps with food safety by powering your kitchen appliances. It can even keep you warm and connected to the world around you.

What’s The Difference Between Battery and Generator Power Sources?

During an emergency, you will also need to consider what you want access to. If you use a battery system, only critical loads like power outlets, some appliances, and lights will be powered. Generators, however, don’t need to worry about this limit and can continue to run as long as there is adequate fuel.

Traditionally generators used propane, diesel, or natural gas to operate, but a growing number of homeowners are switching to battery backups as a greener solution.

Backup Battery System

Even though backup batteries have a higher cost upfront, they have a longer lifespan and are a more eco-friendly option. You will need to install backup batteries, depending on the amount of wattage you desire. If they are solar-powered, you’ll need to invest in solar panels and (potentially) multiple batteries which could be several thousand before installation fees.

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Even though it may be a higher upfront cost, it will actually pay off in the long run thanks to tax incentives, energy usage, and more!

Backup Battery Pros:

  • Longer Lifespan
  • Less Maintenance Needed
  • State and Federal Tax Credits & Incentives
  • Renewable Energy
  • Electricity Savings
  • Reliable Backup Power That’s Rechargeable
  • Quiet

Backup Battery Cons:

  • Higher Upfront Costs
  • More In-depth System
  • Can’t Be Installed Near Floodplains
  • Need To Worry About Critical Loads

Investing in renewable energy by using solar panels and a battery system could also save you tens of thousands of dollars in energy bills. That’s because your solar panels capture and generate energy which is then transferred to your battery system. Anything left over is kicked into the grid and compensated through tax incentives.


Think of it this way: If you buy a traditional generator, you will also need to buy the fuel to keep it running. That price is dependent on supply, and a gallon of gas can spike during shortages and other crises.

That’s also not taking into consideration the regular maintenance needed to ensure it’s working properly. Those fees can add up throughout the years to a similar price as a battery system.

Generator Pros:

  • Inexpensive
  • Easy To Size
  • No Need To Worry About Critical Loads
  • Either Installed Or Portable Options

Generator Cons:

  • Dependent On Fuel Prices
  • Not Eco-Friendly
  • Higher Maintenance Needs
  • Less Lifespan
  • Loud
  • Exhaust Fumes

Choosing to use generators allows you to take control of when and how you power your home. Check out these generator maintenance tips for more info.

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Generator Vs Battery: Which Is Best For You?

Now that you have a better idea of how each one works, you can decide which backup energy system is best for you: generator vs battery.

Did you find this useful? Upgrade your home’s safety by following our blog for more helpful tips.

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