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Top-Rated Generator install pros in San Anselmo - Updated Nov 2026

Avatar for Gridwise Electric
Gridwise Electric
5.0(
36
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving San Anselmo, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Had Gridwise install a transfer switch and inlet box for our portable generator. We lose power a few times a year during wind events and got tired of running extension cords everywhere. Michael handled the install and walked us through exactly how to connect and start the generator when the power goes out. He was patient with all my questions. Permit was pulled and inspection passed first try."
New Home Build Electrical
New Home Build Electrical
New Home Build Electrical
Construction Electrical
Construction Electrical

+66

2 neighbors recently requested a quote
Avatar for Gridwise Electric
Gridwise Electric
5.0(
16
)
Portable Generator - RepairFixed Generator - InstallFixed Generator - Repair+3 more

Serving San Anselmo, 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 Sonoma Coast Electric, Inc
Sonoma Coast Electric, Inc
5.0(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving San Anselmo, 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%
6 neighbors recently requested a quote
Avatar for Christopher Robert Ceinar
Christopher Robert Ceinar
5.0(
15
)
Fixed Generator - InstallPortable Generator - Install

Serving San Anselmo, CA and surrounding areas

Approved

In business since 2023

Offers commercial services

"Chris did a wonderful job in my project. He installed light fixtures and replaced electrical switches for me. He went over and above, cleaning up a messy wiring situation that he discovered. Chris was professional, had great attention detail and extremely conscious of the work surroundings. He was very kind and considerate. I highly recommend Chris for anyone who needs electrical work."
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Generator Install FAQs, answered by experts

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. 

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The San Anselmo, CA homeowners’ guide to generator installs

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