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Avatar for Electrical Innovations LLC
Electrical Innovations LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Decatur, MI and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Jarod did an excellent job. Completed an EV outlet install in a few hours. He came out to do an estimate and had all the supplies he needed in his truck and hired him on the spot. Fair pricing and very neat a clean work. EV outlet works like a charm. Will definitely hire him to do future work at my house."
Basement remodel
Landscape lighting
Network system
Local Landscape Lighting Project
Local Landscape Lighting Project

+21

Response time2 days
Response rate100%
28 neighbors recently requested a quote
Avatar for PM Technologies
PM Technologies
5.0(
4
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Decatur, MI and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"We just had the generator installed today and are so pleased with the guys from PM Technologies from the electricians, helpers, and Ken the salesman. We couldn't have asked for nicer people to do our job."
Additional Photos
Additional Photos
20KW Kohler
Response time1 day
Response rate100%
40 neighbors recently requested a quote
Avatar for ELITE ELECTRIC LLC
ELITE ELECTRIC LLC
5.0(
8
)
Fixed Generator - InstallGenerator - Install - For BusinessGenerator - Repair - For Business

Serving Decatur, MI and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I have dealt with a lot of contractors. John from Elite Electrical actually shows up (and on time), is respectful, personable, and best of all he knows everything about his trade and did an AMAZING job inspecting and explaining. He was very clear about what needed to happen and pricing for all options. A simple generator outlet turned into a whole panel upgrade, but the original panel was hazardous and he showed me exactly why. He suggested and did not push extra. I would definitely refer and re-hire for more projects."
6 neighbors recently requested a quote
Avatar for Fuller Electric LLC
Fuller Electric LLC
5.0(
34
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Decatur, MI and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"If you want a company that does it right, this is the one. He corrected everything that was wrong so that when I’m ready to sell I know I will be at code. He has installed fans and lights, put in a wireless fire and carbon dioxide system, added a 120 plug for my kiln, and re-wired and updated grounding plugs and added new lighting to my garage. He is well versed in current codes, explains everything in layman’s terms, and checks his work more than once so you never have to call him back. He also can clean up old wires so you don’t have unnecessary wires in the way. I’ve worked with him for several years and I won’t call any one else!"
Response time2 days
Response rate94%
Recommended by18%of homeowners
Avatar for Martell Electric, LLC
Martell Electric, LLC
4.4(
41
)
Generator - Install - For Business

Serving Decatur, MI and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"They promptly installed two generators, one for each house, and walked through the app install. They called me a year later to schedule yearly maintenance. Great all the way around."
Response time2 days
Recommended by94%of homeowners
Avatar for Electrical Edge
Electrical Edge
4.5(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Decatur, MI and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"We have a smoke alarm that is located 20 feet u from the floor. Several people declined to come out, including one that wanted $89 just to come and give us an estimate. The $89 did not apply toward the estimate if we accepted. Richard Riley, from Electrical Edge, had us text a picture and said he would be happy to do the job. He showed up on time and was very professional. We plan to use him on some other projects as well. Chris and Chuck Gibson Scotts, MI"
Recommended by100%of homeowners
R&P Electric
3.6(
7
)
Fixed Generator - InstallFixed Generator - Repair

Serving Decatur, MI and surrounding areas

In business since 1988

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality work, and the customer service that we provide to meet the needs of our customers. It is our mission to provide excellent workmanship and to achieve complete customer satisfaction from the start to the 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 customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time3 days
Recommended by100%of homeowners
Showing 1-10 of 15
Generator Install questions, answered by experts

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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.

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 are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

The Decatur, MI homeowners’ guide to generator installs

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