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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.8(
37
)
Fixed Generator - Install

Serving Sullivan, MO and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Kelly installed a new toilet for us. He did a superb job and he deserves a raise. He has such a great attitude. He is a keeper & again, he deserves a raise!! And I am not his mother or grandmother."
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+3

50 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Shinnova Power
Shinnova Power
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Sullivan, MO and surrounding areas

Approved (Corporate)

In business since 2024

Free estimates

Emergency services offered

Shinnova Power is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
2 neighbors recently requested a quote
Avatar for SCF Services LLC
SCF Services LLC
5.0(
12
)
Portable Generator - Install

Serving Sullivan, MO and surrounding areas

In business since 2025

Credit card accepted

Offers commercial services

"Eric did all the electrical work for my new home construction, including wiring for a whole house generator, an RV pad, and an electric vehicle. His work was outstanding, with great attention to detail, such as labeling the electric panel, and making sure his work area was cleaned up after each job was completed. I would have no hesitation in hiring Eric for any future electrical work and, in fact, have hired him for several smaller projects since my house project was completed. I believe his prices are fair for the quality work that he provides."
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+6

Response time10 hrs
Avatar for Summit Power Systems, LLC
Summit Power Systems, LLC
4.1(
12
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Sullivan, MO and surrounding areas

In business since 1980

Emergency services offered

Credit card accepted

"Summit Power Systems was very responsive on the phone. the owner arrived as planned for a review and quote of the work I wanted to contract to them. The crew they sent to my home was FANTASTIC. They were friendly, courteous, and very efficient. Their quality was excellent. The only reason for the "value for the money" ding, is that I would have preferred to do the job myself, but I did not have the time... so, I would have saved ALL THAT MONEY! :) Honestly, the company is a keeper. I highly recommend them for work. They will work with you and adjust as necessary to ensure a job well done and completed within reasonable time frames. A+ rating from me!"
St Louis Hill Generator
Chicago, IL Generator
Chicago, IL 60 kW
Wentsville, Missouri
Wentsville, Missouri 80 kW Generac

+18

Response time5 hrs
Response rate95%
Recommended by90%of homeowners
Right On Time Construction, LLC
New to Angi
Fixed Generator - Install

Serving Sullivan, MO and surrounding areas

In business since 2016

Free estimates

We offer over 20 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. \n\n

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.0(
1
)
Fixed Generator - Install

Serving Sullivan, MO and surrounding areas

In business since 1993

Free estimates

Emergency services offered

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!

Generator Maintenance
Generator Install
Generator Install
Generator Install
Generator Test

+3

Response time1 day
Response rate96%
Recommended by100%of homeowners
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.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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 Sullivan, MO homeowners’ guide to generator installs

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