Top-rated generator install pros.

Best generator install pros near Derby, CO

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Derby, CO?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Derby, CO

*The Angi rating for Generator Install companies in Derby, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Derby, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on May 26, 2025

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

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

Serving Derby, 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
Request Quote
Avatar for Productive Electric, LLC
Productive Electric, LLC
4.9(
14
)
Generator - Install - For Business

Serving Derby, CO and surrounding areas

Approved

In business since 1992

Free estimates

Credit card accepted

"The electrician, Tom, and the Service Manager, Bill, were exceptionally friendly and worked hard to figure out how to accomplish everything we wanted and needed. They also have amazing value for the work."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Absolute Electrical, Heating & Cooling, LLC
Absolute Electrical, Heating & Cooling, LLC
4.3(
328
)
Fixed Generator - Install

Serving Derby, CO and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Installed one 40-amp circuit breaker. No difficulty with the installation, but the price was rather expensive."
Mini Split
Heated driveway
Furnace Inspection
Laying conduit for exterior electrical work
Electrical Panel Replacement

+34

Response time1 day
Recommended by91%of homeowners
Request Quote
Avatar for JL ENGINEERING SERVICES LLC
JL ENGINEERING SERVICES LLC
5.0(
18
)
Portable Generator - Repair

Serving Derby, CO and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Jesus, replaced and repaired multiple Fire Alarms and installed multiple light fixtures. I have also used his lawn service for replacing sprinklers heads and blow outs. I HIGHLY recommend Jesus and have plans to use his team again."
6 neighbors recently requested a quote
Request Quote
Avatar for Just In Time Electrical Services
Just In Time Electrical Services
4.9(
32
)
Fixed Generator - InstallPortable Generator - Install

Serving Derby, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Fast reliable Service. Affordable, professional and explanatory. I give them a 5ð ð ð ð ð rating"
Response time6 hrs
6 neighbors recently requested a quote
Recommended by86%of homeowners
Request Quote
Avatar for DN Electric LTD
DN Electric LTD
5.0(
7
)
Portable Generator - Install

Serving Derby, CO and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

DN ELECTRIC LTD proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today! \n

Electric
Basement receptacles
Basement receptacles
Basement receptacles
Basement receptacles

+1

10 neighbors recently requested a quote
Request Quote
Avatar for Tipping Hat Plumbing Heating & Electric, LLC
Tipping Hat Plumbing Heating & Electric, LLC
3.9(
419
)
Fixed Generator - InstallPortable Generator - Install

Serving Derby, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Excellent work installing my dimmer switches in my new home . Daniel was very professional and great to work with . Thank you !"
Tipping Hat
Tipping Hat
tipping hat
Response time11 hrs
Response rate100%
94 neighbors recently requested a quote
Request Quote
Redrocks Roof and Solar LLC
4.1(
9
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Derby, CO and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Really responsive and prompt, especially in the installation phase. We did have a couple of small hiccups, which in my mind a homeowner should expected on literally any remodeling project, and they were resolved quickly. Communication on final details like inspections could have been smoother, but overall the whole process was very clear, well managed, and well executed. Happy with the choice to go with Red Rocks."
Response time1 day
Response rate89%
Recommended by75%of homeowners
Request Quote
...
Showing 1-10 of 120
Generator Install FAQs, answered by experts

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

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.

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.

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 your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

The Derby, CO homeowners’ guide to generator installs

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

See all articles