Top-rated generator install pros.

Get matched with top generator install pros in Rainier, OR

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Rainier, OR?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Rainier, OR

*The Angi rating for Generator Install companies in Rainier, OR 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 Rainier, OR 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 17, 2025

Find Generator install pros in Rainier

Avatar for Peak Electric Group
Peak Electric Group
5.0(
17
)
Fixed Generator - RepairFixed Generator - InstallGenerator - Repair - For Business+2 more

Serving Rainier, OR and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"The friendly workers showed up when expected. They did a fantastic job replacing my broken bathroom fan. This included, making a larger opening in the ceiling for the new fan. The job was done in less than an hour. They also did a great job cleaning up the dust and debris from the installation. I will use Peak Electric Group for future electrical projects. A+++"
Lighting
Lighting
Service Install
Service Install
13 neighbors recently requested a quote
Recommended by70%of homeowners
Request Quote
Avatar for Rawhide Electric Services, LLC
Rawhide Electric Services, LLC
4.8(
111
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Rainier, OR and surrounding areas

In business since 1978

Free estimates

Emergency services offered

"The guys that came out to install the mini split were efficient, tidy and personable."
Mitsubishi in a new house
Job Site Photos
Job Site Photos
Job Site Photos
New House Wiring

+42

Response time1 day
Recommended by94%of homeowners
Request Quote
Avatar for JBC Group Solutions Inc
JBC Group Solutions Inc
4.0(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Rainier, OR and surrounding areas

In business since 2007

Emergency services offered

1-888-JBC-ON-TIME (888-522-6684). 26 employees in Portland area. No subs used. Payment may be made via PayPal.

Custom Staircases
Custom Exterior Restoration
Custom Bathrooms
Recommended by75%of homeowners
Request Quote
My Fusion Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Rainier, OR and surrounding areas

In business since 2022

Free estimates

Emergency services offered

Fusion Electric 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.

Request Quote
Avatar for Beck's Electric & Maintenance
Beck's Electric & Maintenance
New to Angi
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Rainier, OR and surrounding areas

In business since 2000

Free estimates

Emergency services offered

Specializing in quality replacement installation of built-in appliances and electric fixtures. Servicing Cowlitz County, Clark County and Lewis County, WA as well as Columbia County, OR since 2000

Request Quote
Generator Install questions, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

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 Rainier, OR homeowners’ guide to generator installs

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

See all articles