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Verified Reviews for Generator Install pros in Grain Valley, MO

*The Angi rating for Generator Install companies in Grain Valley, 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 Grain Valley, 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 June 11, 2026

Find Generator install pros in Grain Valley

Avatar for Anthony Plumbing, Heating & Cooling
Anthony Plumbing, Heating & Cooling
4.7(
1,472
)
Fixed Generator - InstallPortable Generator - RepairFixed Generator - Repair+4 more

Serving Grain Valley, MO and surrounding areas

Approved (Corporate)

In business since 1951

Free estimates

Emergency services offered

"The installation crew of Drew and Tanner was outstanding. Very professional and knowledgeable. Drew explained everything he was going to do and always answered my questions promptly. Definitely did a high quality installation. The work area was left spotless. An outstanding crew."
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+38

170 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Lat/Long Electric
Lat/Long Electric
5.0(
57
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Grain Valley, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Raul is awesome! Couldn't have asked for a better electrician to work on my projects. He is an expert and has a great work ethic. He installed a chandelier, light switch, and neon sign above my fireplace. He also rerouted wires in my guest bathroom and installed a vanity light. He also added three outlets in the house. Great work all around. I would definitely recommend him for anyone that needs electric work done."
Response time5 hrs
Response rate98%
6 neighbors recently requested a quote
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Avatar for Fidelis Renewables
Fidelis Renewables
5.0(
9
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Grain Valley, MO and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

Fidelis Renewables is a veteran-owned solar and electrical contractor serving residential and commercial customers across the Kansas City and St. Louis regions. We specialize in new solar installations, solar service and repair, battery storage, electrical upgrades, EV chargers, and professional solar removal and reinstallation for roof replacement and insurance claims. \n\nWe also help homeowners with orphaned or abandoned solar systems when the original installer is no longer available. Our in-house team is led by a licensed Master Electrician, and we service systems from multiple manufacturers. Fidelis Protect Membership offers ongoing monitoring, warranty coordination, annual inspections, and priority service. \n\nIntegrity First – Energy Experts.

Electrical Meters
Solar Shot
Backup Batteries
19 neighbors recently requested a quote
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Avatar for Smart Power Services
Smart Power Services
4.3(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Grain Valley, MO and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

We are a small business based in Lee's Summit, MO. Our goal is to cultivate long lasting relationships with all our clients. Above all, we value honesty and integrity in the way we do business. We do it all: Standby Generators - maintenance and repairs, installations, residential/commercial/industrial Residential - service repairs, panel upgrades, EV chargers, remodels, and new construction. Commercial/Industrial - service repairs, electrical additions, remodels, and new construction. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward working with you!

Cummins Generator
Kohler 12 kW
Response time7 hrs
Response rate100%
3 neighbors recently requested a quote
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Avatar for East Side Electric, LLC
East Side Electric, LLC
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Grain Valley, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Warranties offered

Small jobs welcome

"Brian was thorough, made suggestions and recommendations. Installed 220 outlet."
New CH Breaker Panel
FedPac Panel
New Panel Old Wire
Central Lighting
Wide Shot Ab Sink

+7

Response time1 day
Recommended by30%of homeowners
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Avatar for Hamilton Electric
Hamilton Electric
4.3(
114
)
Fixed Generator - Install

Serving Grain Valley, MO and surrounding areas

Approved (Corporate)

In business since 1950

Emergency services offered

Warranties offered

"I had Hamilton install a whole house generator. Very professional and great work and communication from them. They were also very reasonably price compared to some other quotes I received."
Generator Installation
Response time8 hrs
Recommended by86%of homeowners
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Avatar for C&S Electric, LLC
C&S Electric, LLC
4.6(
61
)
Portable Generator - RepairPortable Generator - Install

Serving Grain Valley, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Warranties offered

"Glad to find electricians that I could depend on and that knew what to do."
Response time1 day
117 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Landis Enterprises, LLC
Landis Enterprises, LLC
5.0(
3
)
Fixed Generator - InstallPortable Generator - Install

Serving Grain Valley, MO and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Landis did an awesome job on a complicated project we had replacing knob and tube wiring in our house. Their team was clearly knowledgeable about the project, provided great advice, did it in a timely fashion with minimal damage done to our walls. They also were very reasonable priced compared to other bids we received. I would highly recommend them to anyone needing electrical work done."
Additional Photos
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+4

Response time1 day
Response rate100%
6 neighbors recently requested a quote
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Avatar for T&L Services Group
T&L Services Group
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Grain Valley, MO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Tyler did a great job installing the garbage disposal. He was prompt, kept me advised on his time of arrival and the pricing was reasonable. I would highly recommend him for your plumbing repairs and installations."
Deck Repairs
Deck Repairs
Deck Repairs
95 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

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 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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The Grain Valley, 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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