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Avatar for Gridwise Electric
Gridwise Electric
5.0(
27
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Petaluma, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"We brought Gridwise in for electrical work connected to a solar wiring project. I was a little on edge going in because our last contractor experience was? not great. Stas was the first person we talked to and he set the tone: clear scope, what?s included, and what might change if the panel had surprises. That alone made it feel more predictable. On install day, Enrique ran the job and the crew was steady and respectful in the house. When something small came up, they didn?t force one path?they gave a couple options and explained the pros/cons in a way I could actually follow. The finished work looks intentional (not rushed), and we passed inspection without any back-and-forth. Overall it was just? smooth. I?d use them again."
New Home Build Electrical
New Home Build Electrical
New Home Build Electrical
Construction Electrical
Construction Electrical

+41

1 neighbors recently requested a quote
Avatar for Gridwise Electric
Gridwise Electric
5.0(
15
)
Portable Generator - RepairFixed Generator - InstallFixed Generator - Repair+3 more

Serving Petaluma, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Just got a hot tub delivered and needed the electrical run to it. Mark and crew came out and installed a 50-amp GFCI breaker and ran conduit along the side of the house to a disconnect near the tub. Looked way cleaner than I expected. Passed inspection and we were soaking that weekend."
Junction box
Main panel
Framing phase
Construction Electrical
Construction Electrical

+3

27 neighbors recently requested a quote
Avatar for AMP-A-NEER
AMP-A-NEER
4.9(
28
)
Portable Generator - Install

Serving Petaluma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Project: Install Electrical Switches, Outlets. They were on time, professional and flexible. Also, discussed future projects - replacing a fixture in bathroom, and on their way out attached a smog detector the right way. I would definitely use this company again."
Response time3 hrs
Response rate92%
14 neighbors recently requested a quote
Avatar for Sonoma Coast Electric, Inc
Sonoma Coast Electric, Inc
5.0(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Petaluma, CA and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"I had 2 ceiling fan/lights installed in the bedrooms. Installation included 2 new circular circuit boxes in each bedroom ceiling. In addition, I replaced the kitchen ceiling light with an LED fixture. The 2 workers were very polite and professional and worked quickly and efficiently, in addition to being respectful of my personal belongings."
Multimeter Test
100 amp Sub Panel
100 amp Sub Panel
Installing Unistrut
Stripping Wire

+3

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Gendron Electric
4.6(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Petaluma, CA and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

"Matt was the only contractor that actually dove in to the project for the bid. He realized that we needed an upgraded panel to support our installation. Every other contractor assumed the panel had openings under the blanks, but there were used by solar and backups. Quoted installation time was right on. Very professional and quick to respond."
Response time5 hrs
Recommended by88%of homeowners
Avatar for Christopher Robert Ceinar
Christopher Robert Ceinar
5.0(
15
)
Fixed Generator - InstallPortable Generator - Install

Serving Petaluma, CA and surrounding areas

Approved

In business since 2023

Offers commercial services

"I recently hired Chris to install an EV charger for our home. The job seemed simple at first but ended up being a bit more complicated. But Chris was patient and really thoughtful in figuring out the project and explaining it to me. He didn't change his bid even with the complications and got the job done on the day he committed to. Chris is REALLY good at explaining electrical stuff to a very non- knowledgeable customer (me!). I learned a ton working with Chris and know how to talk about AMPS now! I have no doubt I will go to Chris for all future electrical needs."
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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. 

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

The Petaluma, CA homeowners’ guide to generator installs

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