How Does a Home Backup Generator Work?

A Generac home backup generator senses a power outage, turns on automatically, and delivers backup power to your home. It will run until utility power returns - whether that's two hours or two weeks.

1 Utility Power Is Lost

Perhaps it's a storm. Maybe it's an equipment failure. In any case, the electricity you depend on is suddenly gone.

2 Your Generac Generator Senses A Problem

Within seconds, your generator prepares to restore your home's power.

3 The Generator Turns On Automatically - Whether You’re Home Or Away

Within a few seconds, it is up to speed and generating electricity.

4 Your Electricity Is Restored

The automatic transfer switch sends generator power to your home. And it will continue until utility power returns.

Our Generac Home Backup Generators

Not sure about the right fit? CONTACT US TODAY!
Rick Todd, I want to tell you that dealing with your company, GREENFIELD POWER has been an absolute delight from my first encounter with your representative and product at the Carp Fair. From your initial home visit and site investigation to the day of installation of my new generator, you and all those who work with you provided the highest level of professionalism and demonstrated excellent customer Service - with a capital S. This was one of the easiest and most pain free transactions I have ever experienced. Your ongoing dedication to your customers is superb!!! You did not hesitate to provide additional consideration to walk me through the basic features of the generator providing me with an overall understanding of how my home will now be sheltered from future power outages. So many companies now have poor customer service, it is great to find a company that cares and does the right thing. My decision to purchase the product from your company had as much to do with your quick, accurate, and competent response to my question as it did with the product itself. I am highly recommending your company to all neighbours and my friends. H. McKenzie, Dunrobin, Ontario

Home Backup Generators: What Do You Need To Know?


It starts and stops automatically, and never needs refueling. This video explains how and why.


Hear what several Generac customers have to say about their home backup generators.


Find out why so many homeowners choose a Generac home backup generator over competitive brands.