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Top-Rated Generator install pros in Keystone - Updated Nov 2026

Avatar for Mr. Electric of Golden CO
Mr. Electric of Golden CO
5.0(
17
)
Portable Generator - Install

Serving Keystone, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Mr Electric of Golden put together an amazing team to solve a challenging problem at my mountain home. I wouldnâ t hesitate to hire them again. Many thanks to Clay, Liz, Randy, Brandt and Chris"
Electrical Safety
Repairs
Installations
Another Quality Job Completed
Wall where the customer requested the charger

+25

Response time2 hrs
Response rate99%
6 neighbors recently requested a quote
Avatar for RES Electric
RES Electric
4.8(
25
)
Fixed Generator - Install

Serving Keystone, CO and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Ralph is a very conscientious master electrician. We presented him with some relatively easy work, but he saw through the issues and worked out some problems we did not know we had. That is not to say that we paid for work not desired. He also recommended we wait on some other projects to better coordinate the electrical install. Well done! We will use him again."
Response time1 day
14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Electrical Innovations LLC
Electrical Innovations LLC
New to Angi
Portable Generator - Repair

Serving Keystone, CO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Electrical innovations provides electrical safety for families homes, and peoples businesses. We are a fully licensed and insured company who’s been in business since 2010. We are a family owned and operated business who strives for making families happy and satisfied returning customers.

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Generator Install FAQs, answered by experts

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

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.

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. 

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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

The Keystone, CO homeowners’ guide to generator installs

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