How Much Does It Cost To Have A Standby Generator Installed?
We may earn affiliate fees for purchases using our links (at no additional cost to you).
A standby generator is a crucial device we use on daily basis. Many people ask, “ how much does it cost to have a standby generator installed?”
Your budget is a big factor to get a new standby generator. So, you must know the cost before buying your generator.
This article will answer your question as well as let you know about other important factors in installing a standby generator.
How Much Does It Cost To Have A Standby Generator Installed?

A modest generator for vital systems in a smaller home can cost as little as $3,000, whereas a whole-house generator for a larger home can cost between $20,000 and $45,000.
The cost to install a standby generator in the majority of homes is approximately $17,000, which includes an automatic transfer switch and labor.
Large luxury residences with features such as heated pools, outside kitchens, and saunas cost at least $50,000
Automatic standby generators are wired directly to the home and have a backup fuel source.
Here is a table showing estimated costs for standby generator installation based on generator size:
Generator Size | Installation Cost Range |
---|---|
8-11 kW | $2,000 – $4,000 |
12-16 kW | $3,500 – $6,000 |
17-20 kW | $5,000 – $7,500 |
22-25 kW | $6,500 – $10,000 |
Factors Affecting the Cost of Standby Generator Installation
When considering the installation of a standby generator, there are several factors that will affect the overall cost.

Power Output:
The amount of power output that the generator produces will also affect the cost of the installation.
The higher the power output, the higher the installation cost.
Fuel Source:
The type of fuel source for the standby generator will also affect the installation cost.
Propane generators are typically more expensive than natural gas generators.

Size and Complexity of the Installation:
The size and complexity of the installation will also impact the cost. The more complex the installation, the higher the cost will be.
Local Building Codes and Permits:
The cost of the installation will also depend on local building codes and permits.
Some areas may require additional permits, inspections, or fees.
Location of the Property:
The location of the property will also affect the installation cost.
Remote locations may require additional transportation or labor costs.
Cost of Labor:
The cost of labor will also vary depending on the location, the complexity of the installation, and the contractor you choose.
It is important to get quotes from multiple contractors to ensure you are getting a fair price.

DIY vs. Professional Installation:
When it comes to standby generator installation, there are two options available: DIY or professional installation.
Each option has its advantages and disadvantages, and the choice ultimately depends on your experience and comfort level with electrical work.
Advantages of DIY installation:
- Cost savings: DIY installation can save you money on labor costs.
- Flexibility: You can work on your own schedule and at your own pace.
- Satisfaction: Completing a project on your own can be satisfying and boost your confidence.
Disadvantages of DIY installation:
- Lack of expertise: Unless you have experience in electrical work, you may not be aware of certain safety precautions and installation techniques.
- Safety concerns: Electrical work can be dangerous and can lead to injury or even death if done improperly.
- Warranty issues: DIY installation may void the manufacturer’s warranty.
Advantages of professional installation:
- Expertise: Professionals have the knowledge and experience to complete the installation safely and efficiently.
- Warranty: Professional installation often comes with a warranty that covers both parts and labor.
- Safety: Professionals are trained to handle the potential hazards associated with electrical work.
Disadvantages of professional installation:
- Cost: Professional installation can be expensive, and you will have to pay for labor costs.
- Limited scheduling flexibility: You will need to schedule the installation at a time that is convenient for the professional.
>> Can A Propane Generator Run On Natural Gas?
How To Install My Own Standby Generator?
Determine The Size Of The Generator.
If you need to power a lot of different things around the house, your contractor should guide you in selecting the appropriate size generator for your needs.
Find The Most Suitable Place.
There are typically only a few good spots for the generator to sit, despite the fact that regulations can vary from jurisdiction to jurisdiction.
Secure permits
Inquire with your contractor about whether or not they will collaborate with your county or state to acquire the necessary permits.
Permits are an absolute necessity for projects of this nature, and a reliable contractor will take care of the application process on your behalf.
Pour the concrete onto the base.
The gravel or concrete surface on which generators are to be installed needs to be leveled and prepared in advance of the installation process.
Set The Generator To The Base Of The Concrete Slab

When turned on, the generator causes vibrations that can move and shift the ground; consequently, the generator needs to be secured to the level concrete pad you have.
Join the fuel line together
A plumber will install the tubing that connects your generator to the fuel source, regardless of whether the fuel source is natural gas or propane.
Put in place the changeover switch
When a power outage is detected, transfer switches immediately switch over to the generator as the primary source of electrical energy.
They come in a variety of sizes and specifications, and they can be installed either before or after a main electrical panel to control a smaller sub-panel.
They can also be installed in between.
Put the electrical plugin
The electrician will first install the transfer switch, and then they will connect the generator to the electrical system in your home.
Inspection
It is likely that a local inspector from your jurisdiction will need to give their stamp of approval before your generator can be considered fully operational.
This is done to ensure that it satisfies all mandatory safety standards.
Financing Options for Standby Generator Installation:
Standby generator installation can be a significant investment, and for many homeowners, financing options can make the installation more affordable.
There are several financing options available to pay for the generator and installation costs, including:
Cash:
Paying for the generator and installation costs upfront with cash is the simplest financing option.
This may not be feasible for everyone, especially for larger installations.
Credit Cards:
Some homeowners may choose to pay for the generator and installation costs with a credit card.
This option allows for flexibility in payment, but can lead to high-interest rates and debt if not paid off promptly.
Home Equity Loans:
Homeowners with significant equity in their homes may qualify for a home equity loan, which allows for borrowing against the value of the home.
This option can provide low-interest rates but also increases debt and the risk of losing your home if payments are not made.
Manufacturer Financing:
Some standby generator manufacturers offer financing options for their products.
These options can provide competitive interest rates, but may require a credit check and have specific terms and conditions.
Rebates or Incentives:
In some areas, homeowners may be eligible for rebates or incentives to help offset the cost of standby generator installation.
These programs may require specific qualifications or application processes.
FAQs about Installing Standby Generator
What Do I Need To Know About Taking Care Of The Generator After It’s Been Installed?
Generators can only be used outside, so it’s not surprising that they’ll need some upkeep from time to time.
Maintenance should cost between $75 and $300 per year to keep your generator in great shape.
A standby generator will keep an eye on itself and fix any problems by running several times a week and sending a message back.
How To Save Money On A Standby Generator?
Get some knowledge on the size of generator you should buy and how much it will cost to install it.
To save money on subcontractor fees, choose a contractor who can do everything you need (pouring concrete, gas plumbing, and electrical work).
Install at a time of year when there are fewer power outages in your area.
Don’t go out and buy a generator right after the first big storm, when the costs of materials, items, and labor are at their highest.
Before you buy, make sure you don’t need to size up or down.
How Big Generator Should I Install?
How big your generator needs to be will depend on how big your home is and how much electricity it uses.
For a house with central air conditioning, electric heat, and electric appliances, you’ll need more.
For a whole-home backup, most mid-sized homes in need one that makes between 22kW and 32kW of power.
You’ll only need about half of that for critical circuits.
If you have a heated pool or sauna or live in a very hot or cold area and heat your home with electricity, you may need 45kW or more.
Final Thoughts
We hope you have got the answer to the question, “ how much does it cost to have a standby generator installed?”
It depends on the size, type, and fuel of the generator.
Follow the proper way of installing the standby generator. It will help you to avoid any inconvenience and increase the lifetime of the generator.