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

Avatar for Gridwise Electric
Gridwise Electric
5.0(
41
)
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%
7 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."
Warner Electric
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving San Anselmo, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Steve and his team have done a number of jobs for me from installing light fixtures to adding additional outlets in the bathroom which required going underneath the house. They are professional, timely, courteous, clean, reliable and reasonably priced!"
8 neighbors recently requested a quote
Recommended by100%of homeowners
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Generator Install FAQs, answered by experts

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.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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

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.