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Best generator install pros near San Mateo, CA

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

Avatar for Fitch Electric, Inc.
Fitch Electric, Inc.
5.0(
14
)
Fixed Generator - Install

Serving San Mateo, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"It is weeks like this that make me so happy to have had Fitch Electric install a generator at my house. I had them install an EV Generator a few months ago and bit the bullet for the generator knowing this summer would be HOT and PGE would be shutting us down as usual. I cannot say enough great things about Fitch Electric https://fitchelectricinc.com/ They are professional, reasonably priced and are on-time and on budget. Thanks Lucas and your team at Fitch Electric 5 out of 5 star recommend ! I only said 4.5/5 on the value only because it's expensive regardless so this isnt a knock on Fitch just the whole generator world and PGE in general. I wish we didn't have to do this but in these times over the last several years WE KNOW that PGE will be shutting off power and this is just what we have to do. I love Fitch! Will use them again 100% in the future."
Finished product
Sketch showing generator install.
Pouring the concrete pad for generator.
Generator delivered to client.
Hoisting generator over ledge.

+6

Response time2 days
14 neighbors recently requested a quote
Recommended by92%of homeowners
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Portable Generator - Repair

Serving San Mateo, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
Avatar for Vilroy
Vilroy
New to Angi
Portable Generator - Repair

Serving San Mateo, CA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

With over 28 years of experience in residential and commercial electrical services, I am a fully licensed electrician in the State of California, committed to delivering excellence in every project.\n\nMy work is built on precision, safety, and strict compliance with California electrical codes. From panel and subpanel upgrades to three-phase systems, transformers, lighting installations, and advanced troubleshooting, every job is executed with professionalism and attention to detail.\n\nI don’t just complete projects — I deliver safe, efficient, and long-lasting electrical solutions.\n\nProfessional. Reliable. Done right the first time.

Avatar for Switch on
Switch on
New to Angi
Portable Generator - Repair

Serving San Mateo, CA and surrounding areas

Approved

Bendiciones soy una persona profesional en mi trabajo buenos precios y trabajo 100% bueno \n \nTítulo profesional electromedico pero actualmente me dedico a la lectricidad ya que esta es una de las bases de mi carrera

Avatar for GT Handyman Services and Junk Removal
GT Handyman Services and Junk Removal
New to Angi
Portable Generator - Repair

Serving San Mateo, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

I provide a complete property care service, handling everything from minor electrical repairs and general household fixes to full junk removal. Whether you need a light switch swapped out, a ceiling fan installed, or an entire garage cleared, I am your one-call solution. I save you the hassle of hiring multiple contractors by taking care of the repairs and hauling away the mess all at once.

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Generator Install FAQs, answered by experts

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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.

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.

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.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

The San Mateo, CA homeowners’ guide to generator installs

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