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Avatar for NextGen Electric
NextGen Electric
4.7(
27
)

Serving Greenfield, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Hans was prompt returning my request for service, and showed up exactly on time. He installed my charging unit for my new hybrid in my garage where I wanted it, along with 2 surge suppressors for my 2 breaker boxes. After finishing the install, he cleaned up behind himself along with the leaves, etc. that had accumulated over the years. His price was fair and I'd definitely hire him for more work in the future. Nice young man to boot!"
Electrical Project
Electrical Project
Electrical Project
Electrical Project
Electrical Project

+43

Response time3 days
17 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for CARVER ELECTRICAL CONTRACTING LLC
CARVER ELECTRICAL CONTRACTING LLC
5.0(
9
)

Serving Greenfield, MO and surrounding areas

Approved

In business since 2025

Emergency services offered

Warranties offered

"Eric was very patient as we worked through what we wanted. We had an RV plug and EV charger installed outside. There were some missteps along the way, but he always ensured to follow up and got it all working. I would call him again if I need something electrical in the future."
480 volt panelboard
Underground
Underground
Panel board
Pipe runs

+2

Response time6 hrs
20 neighbors recently requested a quote
Avatar for Donohue's Lightning Rods
Donohue's Lightning Rods
4.3(
70
)

Serving Greenfield, 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
74 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Solarize
Solarize
5.0(
10
)

Serving Greenfield, MO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Needed a sub panel and my entire garage wired(7 120 outlets, 2 240 outlets, and a floodlight put in). They showed up gave a quick run threw and they knocked it out Whole process was quick and easy. Great work at a great price! Would definitely recommend!"
137 neighbors recently requested a quote
Avatar for Voltec Electric LLC
Voltec Electric LLC
5.0(
6
)

Serving Greenfield, MO and surrounding areas

Approved

In business since 2023

Free estimates

Offers commercial services

"“I recently had my electrical panel box upgraded and couldn’t be happier with the service. The electrician was punctual, professional, and clearly experienced. The installation was clean and organized, and they made sure everything met code requirements. They also answered all my questions and made the whole process easy and stress-free. I would absolutely hire them again and recommend them to anyone needing reliable electrical work.”"
4 neighbors recently requested a quote
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
New to Angi

Serving Greenfield, 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%
60 neighbors recently requested a quote
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FAQs for generator install projects in Greenfield, MO

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.

Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

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.

The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The Greenfield, MO homeowners’ guide to generator installs

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