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Verified Reviews for Generator Install pros in Keystone, SD

*The Angi rating for Generator Install companies in Keystone, SD 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 Keystone, SD 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 26, 2025

Find Generator install pros in Keystone

Avatar for Mr. Electric of the Black Hills

Mr. Electric of the Black Hills

PO Box 1312
4.89(
42
)
•Approved Pro

Mr. Electric of the Black Hills

PO Box 1312
4.89(
42
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 local quotes requested

Need an electrician in Rapid City or Pennington County to help you cut down costs on your next electricity bill? Let Mr. Electric of The Black Hills, help you reach your goals. With around the clock availability, our team offers several services that could benefit not only your home or business, but also the environment. Whether it's for safety and security or specialty lighting for the holiday season, Mr. Electric of the Black Hills, can assist you with your every need.

"I was pleased with the quality of Cody’s work installing an EV charger. He was very honest. I thought I needed to upgrade my 150 amp service panel to a 200 amp panel to handle the EV charger, but when he evaluated the extra load and the panel’s current load, he told me the upgrade was not needed for the EV charger. That made the job very inexpensive."

Robert G on January 2025

Need an electrician in Rapid City or Pennington County to help you cut down costs on your next electricity bill? Let Mr. Electric of The Black Hills, help you reach your goals. With around the clock availability, our team offers several services that could benefit not only your home or business, but also the environment. Whether it's for safety and security or specialty lighting for the holiday season, Mr. Electric of the Black Hills, can assist you with your every need.

"I was pleased with the quality of Cody’s work installing an EV charger. He was very honest. I thought I needed to upgrade my 150 amp service panel to a 200 amp panel to handle the EV charger, but when he evaluated the extra load and the panel’s current load, he told me the upgrade was not needed for the EV charger. That made the job very inexpensive."

Robert G on January 2025

Swiftec, Inc

1304 Oregon St.
No reviews yet

Swiftec, Inc

1304 Oregon St.
No reviews yet
20 years of experience

Locally owned and operator, Swiftec Inc., has been in business since 2005. Swiftec offers both residential and commercial services. Swiftec strives to be a leader in the electrical Industry with quality standards. The Swiftec goal is to provide a wide range of electrical service that is competitive and proficient. Always reliable and affordable, no job is too large or too small. Experience the Swiftec difference.

Locally owned and operator, Swiftec Inc., has been in business since 2005. Swiftec offers both residential and commercial services. Swiftec strives to be a leader in the electrical Industry with quality standards. The Swiftec goal is to provide a wide range of electrical service that is competitive and proficient. Always reliable and affordable, no job is too large or too small. Experience the Swiftec difference.

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)
53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Avatar for Mr. Electric of the Black Hills

Mr. Electric of the Black Hills

1648 Minuteman Dr
5.00(
8
)

Mr. Electric of the Black Hills

1648 Minuteman Dr
5.00(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

24/7 Electrical Service. Since 1994, the professional electricians at Mr. Electric have been serving residential and commercial customers throughout the US and Canada. We get it right the first time, delivering the most comprehensive electrical services including installation, upgrade, and repair solutions available. You can feel confident calling Mr. Electric, knowing that our highly trained electricians will treat you, your family, and your property with the respect and attention to safety you deserve. Whether it's hanging a ceiling fan, installing a custom-designed landscape lighting system, or rewiring a commercial structure, or other electrical services, you can call on Mr. Electric. We have the power to make things better!

"Great job techs were professional"

Cody M on February 2018

24/7 Electrical Service. Since 1994, the professional electricians at Mr. Electric have been serving residential and commercial customers throughout the US and Canada. We get it right the first time, delivering the most comprehensive electrical services including installation, upgrade, and repair solutions available. You can feel confident calling Mr. Electric, knowing that our highly trained electricians will treat you, your family, and your property with the respect and attention to safety you deserve. Whether it's hanging a ceiling fan, installing a custom-designed landscape lighting system, or rewiring a commercial structure, or other electrical services, you can call on Mr. Electric. We have the power to make things better!

"Great job techs were professional"

Cody M on February 2018

Generator Install questions, answered by experts

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The cost to install a whole-house generator averages at $5,200, but costs can range from $1,500 to $8,900, depending on the type and size of the generator, and the labor required to install it. To find the best deal while still ensuring the unit meets all the needs of your household, hire an electrician to calculate the electrical load of your must-have appliances and electronics beforehand so you don’t pay for more power than you need. As always, be sure to get at least three quotes to find the ideal fit for your needs and budget.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

The Keystone, SD homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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