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Verified Reviews for Generator Install pros in Rolla, MO

*The Angi rating for Generator Install companies in Rolla, MO 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 Rolla, MO 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 September 08, 2025

Find Generator install pros in Rolla

Avatar for Collective Enterprise
Collective Enterprise
5.0(
15
)

Serving Rolla, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Samuel and Colleen from Collective Enterprise, LLC are the best. They made my anxiety in hiring them go away, since I was unfamiliar with their company. Colleen made sure my project scheduling would accommodate the vendor materials delivery date before the installation started. Samuel arrived each day on time and cleaned the area before leaving. Samuel professionally assembled and installed 2 walk-in, all-wood closet systems. One system was installed off the floor, and the other, free-standing. He did an awesome job. I would not hesitate to recommend Collective Enterprise, LLC. We are so happy with the work done, we will definitely use Collective Enterprise, LLC again for our upcoming project."
Response time2 days
Response rate92%
2 neighbors recently requested a quote
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Avatar for Donohue's Lightning Rods
Donohue's Lightning Rods
4.3(
70
)

Serving Rolla, MO and surrounding areas

Approved

In business since 1971

Free estimates

Emergency services offered

"Within minutes after submitting an inquiry, Seamus contacted me to find out specifics of my project and although he provided an estimate, he was receptive to coming out for a site visit before I committed. Edward came for the preliminary site visit and afterwards, I accepted their proposal. Cliff, the installer, communicated with me with scheduling and was very professional and easy deal with. Edward performed an inspection after install to make sure everything was done properly. The people representing this company seem very knowledgeable about their work and is backed up by generations of experience."
Jobs from the last 3 year
Jobs from the last 3 year
Lightning protection
Lightning protection
Lightning protection

+10

Response time1 day
70 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Solarize
Solarize
5.0(
10
)

Serving Rolla, MO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Gentleman who owns Solarize was professional and courteous. He communicated well with the manufacturer and convinced them that a replacement inverter was needed based on the data he saw and the manufacturer had seen. It's what we were hoping for."
139 neighbors recently requested a quote
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Avatar for LIETZ HOME SERVICES LLC
LIETZ HOME SERVICES LLC
4.9(
42
)

Serving Rolla, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"Needed an access door built and installed for my crawl space. He built it and installed it. Door is perfect"
Response time1 day
Recommended by51%of homeowners
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Avatar for Mr Electric of Central Missouri
Mr Electric of Central Missouri
4.2(
66
)

Serving Rolla, MO and surrounding areas

Approved

In business since 2009

Emergency services offered

Credit card accepted

"very friendly people to work with, installed ceiling fan and was gone in about an hour, maybe a little longer, very professional."
Light projects
Light projects
Light projects
Light projects
Light projects

+2

Response time2 days
103 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
New to Angi

Serving Rolla, MO and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

Response time1 day
Response rate100%
59 neighbors recently requested a quote
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Lighthouse Outdoor Lighting of Central Missouri
0.5(
1
)

Serving Rolla, MO and surrounding areas

Approved

In business since 2013

Lighthouse Outdoor Lighting of Central Missouri is Missouri's most respected outdoor lighting company. Our expertise gives us the ability to offer our neighbors a wide variety of plans. Our attention to detail and expert design skills allow for us to create that beautiful outdoor experience, while adding site safety and security. \n\nWe have been in this industry for over 10 years and we strongly believe in giving our customers the most for their money. Why let night hide what you have worked so hard to cerate? We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. This approach has set us apart from our competition and keeps our customers coming back!\n\nYou can be sure your project will be handled promptly and professionally. Call us today to schedule an appointment!\n

Response time1 day
2 neighbors recently requested a quote
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Generator Install questions, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

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.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Rolla, MO 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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