Generac logo, home standby generator and Ameren Illinois logo.

Exclusive offer for Ameren Illinois customers 

when you request a free quote and complete your purchase with an authorized Generac dealer. Act now!

Exclusive offer for Ameren Illinois customers

Generac power systems, the #1 brand of automatic home standby generators, offers affordable backup power solutions so you’re never without power.
Act now to get this exclusive offer for Ameren Illinois customers*

  • FREE 7-Year Extended Warranty
  • FREE 1st Year Maintenance
  • FREE 1st Year Dealer Monitoring

To take advantage of this exclusive offer, request a FREE quote, and complete your purchase with an authorized Generac dealer. (Offer not available without a FREE quote.)

To request your free quote, complete the form below, or call 855-447-3735.
For answers to frequently asked questions about home backup power visit our Home Standby Generator FAQ.

Special Financing Available with Low Monthly Payments! 
(Subject to credit approval. See dealer for details.)

Hurry, this is a limited time offer!
*Terms and Conditions Apply. See below.

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Home backup generators: What do I need to know?

We know a home backup generator is a big investment. Here's what you need to know to make an informed decision about your Generac home backup generator purchase.

  • How do I choose the right generator for me?

    Generac has an online sizing calculator that can help you determine the right home backup generator for your unique needs. The best way, though, is to work with one of our 5000 dealers. They'll help you select the right generator, and provide you with a free quote.

  • Generac installer at work behind a turquoise house.

    How much will it cost to install my home standby generator?

    No two installation jobs are the same, and your local dealer will help you determine the installation plan best suited to your unique needs.On average, installation costs of a home standby generator range from $5,000-10,000 plus purchase of the generator itself. Pricing can vary based on several factors, including the complexity of the installation process and your location. Contact an Authorized Generac Dealer to get a custom quote.

  • What's involved in installing a home backup generator?

    Installing a home backup generator is an exciting time. Your installer will prepare the installation site outside your home, place the generator, run the natural gas or LP fuel line, install the transfer switch, and make all of the necessary electrical connections. And they will make sure that your backup generator runs properly, and is ready for its first power outage.

Interrupted power graphic near home standby generator at a house while it is raining.

How do I get started?

You can begin exploring the full selection of Generac home backup generators. Use our interactive sizing guide to narrow down the selection. Then contact a Generac dealer for a free quote. And if you have any questions, you can chat with a Generac representative.

Let a Generac pro help you choose with a free quote

Let an authorized Generac dealer help you choose your home standby power system from the comfort of your home – for FREE!

With your free quote, an authorized Generac dealer will discuss your backup power requirements, so they can recommend a home standby generator that fits your needs and is within your budget. They will explain the installation process and help you choose where your generator should be installed. Along with a written estimate, they can also provide you with financing options. Remember, the in-home assessment is 100% FREE, and there’s no obligation to buy. 

To get started, complete the form below, or call 855-447-3735 to speak with a Generac representative.

Request Your Free Quote

* indicates a required field

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Terms & Conditions, Privacy Notice.

What type of home do you have?

By completing this form and clicking “Submit” below, I am providing consent to permit Generac to share my contact information with one or more Authorized Generac Dealers in my area as well as Generac’s contracted financing provider, Synchrony, about this request. I also agree and am providing my consent to permit Generac to contact me about Generac products and services for marketing purposes including via telephone, AI generative voices, prerecorded and/or artificial voice messages, and using automated technology, including ATDS. Normal message and data rates apply.  I can opt out of covered communications from Generac at any time. 

I also agree to Generac’s Privacy Notice and Terms & Conditions. 

By completing this form and clicking “Submit” below, I am providing consent to permit Generac to share my contact information with one or more Authorized Generac Dealers in my area as well as Generac’s contracted financing provider, Synchrony, about this request. I also agree and am providing my consent to permit Generac to contact me about Generac products and services for marketing purposes including via telephone, email, AI generative voices, prerecorded and/or artificial voice messages, and using automated technology, including ATDS. Normal message and data rates apply.  I can opt out of covered communications from Generac at any time. 

I also agree to Generac’s Privacy Notice and Terms & Conditions. 

* Ameren Illinois Special Offer Terms & Conditions

Offer redeemable only when customer schedules a free quote with Generac Power Systems’ Consumer Sales Team (not directly with the Generac dealer). Customer must also purchase a new and qualifying Generac automatic standby generator with a participating authorized Generac dealer*. Offer not available at retail, wholesale, or Ecom businesses where Generac Home Standby Generators are sold. Refurbished products are excluded from this offer. Generator must be installed and activated in order for the warranty to be applied. Proof of purchase along with other documentation may be required to be submitted to receive this offer. Individual prices may vary. Generac reserves the right to modify and/or rescind this offer at any time without notice. Offer valid only on qualifying purchases made in the United States (excluding American Samoa, Guam, Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands) and Canada.

Only the following Generac automatic standby generator models qualify for this special promotion: 7171, 7172, 7035, 7036, 7037, 7038, 7039, 7042, 7043, 7171, 7172, 7173, 7174, 7175, 7176, 7177, 7178, 7209, 7210, RG02224ANAX, RG02515ANAX, RG02724ANAX, RG03015ANAX, RG03224ANAX, RG03624ANAX, RG03824ANAX, RG04524ANAX, RG04524ANAC, RG04854ANAX, RG04854ANAC, RG06024ANAX, RG06024AVAX

For more details, contact Generac Power Systems’ Consumer Sales Team at 1-888-Generac (436-3722).

*A participating authorized Generac dealer is a member of Generac Power System’s PowerPlay Team. All quotes must be scheduled through Generac’s Consumer Sales Team, and all purchases must be made through a PowerPlay Team member to qualify for the promotion.