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Verified Reviews for Generator Install pros in Ennis, MT

*The Angi rating for Generator Install companies in Ennis, MT 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 Ennis, MT 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 February 18, 2026

Find Generator install pros in Ennis

Avatar for Independent Power
Independent Power
5.0(
5
)
Fixed Generator - Install

Serving Ennis, MT and surrounding areas

Approved

In business since 1996

Free estimates

Small jobs welcome

Harness the power of nature and achieve energy independence with Independent Power, founded in Bozeman, Montana and providing the highest quality HVAC, solar and battery systems since 1996. Our team of experts designs and installs high-impact, durable heating & cooling, and solar energy systems, using cutting-edge technology. We can also integrate your system with battery storage, so you'll keep the lights on when the grid is down. Whether you're a homeowner, business owner, or organization, Independent Power can help you gain freedom from the traditional energy grid. We specialize in residential, commercial, and off-grid installations.

20 neighbors recently requested a quote
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Avatar for Triple G Electric
Triple G Electric
4.9(
7
)
Fixed Generator - InstallPortable Generator - Install

Serving Ennis, MT and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Great experience. Sebastian was very responsive, flexible, and thorough. Would recommend to others."
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for BK Electric
BK Electric
4.6(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Ennis, MT and surrounding areas

In business since 2024

Free estimates

Warranties offered

"Brandon is very responsive, conscientious, and charges fair prices. I highly recommend him for any of your electrical needs."
Kitchen Remodel
Kitchen Remodel
Kitchen Remodel
Kitchen Remodel
Response time2 hrs
Response rate96%
Recommended by66%of homeowners
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Zero Dark Electric
5.0(
2
)
Fixed Generator - InstallPortable Generator - Repair

Serving Ennis, MT and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"We are so impressed with the outstanding service we received from Zero Dark Electric! From the almost instantaneous return call to the rewiring we needed done, (completed ASAP), Brandon did it right. We would definitely use Zero Dark again and will recommend them to anyone looking for an electrician."
Response time8 hrs
Recommended by100%of homeowners
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C N T Customs
4.0(
2
)
Fixed Generator - RepairPortable Generator - InstallPortable Generator - Repair

Serving Ennis, MT and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Here at C N T Customs, We Go Hard In The Paint.. We are family owned and operated with over 19 years of experience..Take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every client in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job we will treat your home or your business as we would treat our own. Give C N T Customs a call today. We look forward to working with you!

Recommended by100%of homeowners
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Showing 1-10 of 13
Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Ennis, MT homeowners’ guide to generator installs

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