*The Angi rating for Generator Install companies in Johnston, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Johnston, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on October 24, 2026
Serving Johnston, SC and surrounding areas
Approved
In business since 1994
Free estimates
Small jobs welcome
"B and Z electrical responded to my house to install a receptacle. The electrician was professional, showed up on time, completed the job promptly, and left a clean work area. I highly recommend B and Z electrical and will use them again for any of my electrical needs."
Serving Johnston, SC and surrounding areas
In business since 2005
Free estimates
"Mr. Andino did a tremendous job. His crew was very professional and cleaned the areas he worked in. 10/10"
+135
Serving Johnston, SC and surrounding areas
In business since 2025
Free estimates
Credit card accepted
"Spencer Cagen is very professional and honest. He finished my project which could cost more than $1600 from another company for a little over $200. I strongly recommend his service and will hire him again for home project next time."
Serving Johnston, SC and surrounding areas
In business since 2002
Free estimates
"ref. item, the price is high but the product and process is not a usual one. Purchasing and installing whole house electric generator for emergencies."
Serving Johnston, SC and surrounding areas
In business since 2024
Free estimates
Credit card accepted
We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.
+7
Serving Johnston, SC and surrounding areas
In business since 2003
Free estimates
Small jobs welcome
Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.
+5
Serving Johnston, SC and surrounding areas
In business since 1948
Free estimates
Warranties offered
"It's a family owned business that is fanatically focused on outrageous customer service at every step of the purchase and installation process."
Serving Johnston, SC and surrounding areas
In business since 1996
Free estimates
Credit card accepted
We offer over 24 years of experience the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.
Serving Johnston, SC and surrounding areas
In business since 2015
Free estimates
Credit card accepted
With over 17 years of experience in electrical, Ee LLC is your one stop electric shop. From new electrical for home additions to panel upgrades Ee LLC has got you covered. Licensed through the international code council for residential, commercial and industrial; we take pride in our high quality craftsmanship, attention to detail and excellent customer care. For quality that you can rely on; call Ee LLC today and get your project done the right way!! \n \n.
Serving Johnston, SC and surrounding areas
In business since 2007
Free estimates
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
From average costs to expert advice, get all the answers you need to get your job done.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
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