Get matched with top generator installers in Denver, CO
There are 7 highly-rated local generator installers.
Verified Reviews for Generator Installation pros in Denver, CO
*The Angi rating for Generator Installation companies in Denver, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in Denver, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on July 03, 2025
Generator installers in Denver
We are a dealer and installer of Camera Systems, Alarm Systems, Alarm Monitoring, Access Control, Audio/Visual, and so much more.
"Made the project at 1am and by 10am the next morning it was totally taken care of. Fast, professional, knowledgeable, and fairly priced."
Michelle L on November 2024
We are a dealer and installer of Camera Systems, Alarm Systems, Alarm Monitoring, Access Control, Audio/Visual, and so much more.
"Made the project at 1am and by 10am the next morning it was totally taken care of. Fast, professional, knowledgeable, and fairly priced."
Michelle L on November 2024
Professional Power is a locally-owned and operated electrical contractor with offices in Westminster, Colorado. We service all of the greater Denver metro area! Our mission is to provide superior electrical services with a commitment to quality, value, and client satisfaction. Call us today and visit our website at www.propowercolorado.com
"Perfectly. Could not be happier."
Tania D on December 2024
Professional Power is a locally-owned and operated electrical contractor with offices in Westminster, Colorado. We service all of the greater Denver metro area! Our mission is to provide superior electrical services with a commitment to quality, value, and client satisfaction. Call us today and visit our website at www.propowercolorado.com
"Perfectly. Could not be happier."
Tania D on December 2024
Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.
"This company is great, they are very knowledgeable and got the job done!"
Rebekah Z on June 2025
Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.
"This company is great, they are very knowledgeable and got the job done!"
Rebekah Z on June 2025
Northern Lights Electric LLC is a local family owned and operated electrical contractor with over 15 years of experience. Located in Lakewood, serving Denver and All surrounding areas. No job too small or too big. From adding an outlet or light, service upgrades, hot tub installations, ceiling fans, landscape lighting, to wiring a new home. Northern Lights Electric LLC aims to provide the highest quality installation and customer service.
"Anthony with Northern lights was a great hire for the job I needed done. He is a very detailed individual who obviously takes a lot of pride in his work. I would definitely hire him again for any other electrical needs in the future"
Chris S on April 2023
Northern Lights Electric LLC is a local family owned and operated electrical contractor with over 15 years of experience. Located in Lakewood, serving Denver and All surrounding areas. No job too small or too big. From adding an outlet or light, service upgrades, hot tub installations, ceiling fans, landscape lighting, to wiring a new home. Northern Lights Electric LLC aims to provide the highest quality installation and customer service.
"Anthony with Northern lights was a great hire for the job I needed done. He is a very detailed individual who obviously takes a lot of pride in his work. I would definitely hire him again for any other electrical needs in the future"
Chris S on April 2023
We specialize in electrical services, repairs, installs, troubleshooting, lighting, panel upgrades, Whole home generators, ceiling fans, EV/Electric charging stations, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"Every thing went well, in fact VERY WELL!! Jacob and Carlos did a great job. An excellent job cleaning up after all work was done. They were courteous and friendly, and the work was done in a timely manner. Explained everything to my wife and I, especially on installing the light,fan and heat Assy. they installed. Want a great company to do your electrical work? Hire Aim High and I guarantee that you'll be satisfied!"
Gervis G A on March 2025
We specialize in electrical services, repairs, installs, troubleshooting, lighting, panel upgrades, Whole home generators, ceiling fans, EV/Electric charging stations, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"Every thing went well, in fact VERY WELL!! Jacob and Carlos did a great job. An excellent job cleaning up after all work was done. They were courteous and friendly, and the work was done in a timely manner. Explained everything to my wife and I, especially on installing the light,fan and heat Assy. they installed. Want a great company to do your electrical work? Hire Aim High and I guarantee that you'll be satisfied!"
Gervis G A on March 2025
MightyBee Electric is a family owned, GREEN local company with 34 years in the field. We do not charge a trip fee for Angie's List members within the direct Denver metro area ( except Boulder, Longmont, Castle Pines, Castlerock and Parker which will be charged a $39 trip fee) and give free estimates up front of the work always. We never assume authorization and customers can pay by cash, check or credit card at the time of repair. Formerly owned MD ELECTRIC. See website for additional services. 5% military, First Responders and elderly discount
"Excellent job done by Evan and team. He is very honest to provide me a decent quote. I also requested quotes from couple of other businesses, but they gave me about 25% and 135% more whatever Evan gave the quote. Keep it up good work. I am going to hire these people again and again."
Nagaraju A on February 2025
MightyBee Electric is a family owned, GREEN local company with 34 years in the field. We do not charge a trip fee for Angie's List members within the direct Denver metro area ( except Boulder, Longmont, Castle Pines, Castlerock and Parker which will be charged a $39 trip fee) and give free estimates up front of the work always. We never assume authorization and customers can pay by cash, check or credit card at the time of repair. Formerly owned MD ELECTRIC. See website for additional services. 5% military, First Responders and elderly discount
"Excellent job done by Evan and team. He is very honest to provide me a decent quote. I also requested quotes from couple of other businesses, but they gave me about 25% and 135% more whatever Evan gave the quote. Keep it up good work. I am going to hire these people again and again."
Nagaraju A on February 2025
We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels as well as wiring/panel upgrades, and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.
"Great to work with. Showed up on time. "
Joe B on June 2025
We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels as well as wiring/panel upgrades, and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.
"Great to work with. Showed up on time. "
Joe B on June 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"They put in a new plug and fixed problems in my box. They did an overall great job. They did have to come back because the GFI was tripping . They had to tweak something and it if fine. I appreciate the good job."
Tammy L on January 2023
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"They put in a new plug and fixed problems in my box. They did an overall great job. They did have to come back because the GFI was tripping . They had to tweak something and it if fine. I appreciate the good job."
Tammy L on January 2023
Founded in 2019 by Colorado native Jason Duckworth, we are a company that believes in honesty, craftsmanship, and integrity at competitive pricing. We feel that communication is a major key to customer satisfaction so when your project is complete you won't be left in the dark. We look forward to working with you! Check out our website! https://www.jdelectric5280.com/
"I first interacted with JD Electric as a sub on a large remodel of my kitchen. That job took a lot of trouble shooting and they did a great job. They are now my go to for anything electrical. The last job was tracking down some bad wiring in a wall and again very impressed with the job."
Bret W on December 2023
Founded in 2019 by Colorado native Jason Duckworth, we are a company that believes in honesty, craftsmanship, and integrity at competitive pricing. We feel that communication is a major key to customer satisfaction so when your project is complete you won't be left in the dark. We look forward to working with you! Check out our website! https://www.jdelectric5280.com/
"I first interacted with JD Electric as a sub on a large remodel of my kitchen. That job took a lot of trouble shooting and they did a great job. They are now my go to for anything electrical. The last job was tracking down some bad wiring in a wall and again very impressed with the job."
Bret W on December 2023
RiLo Communications Limited Liability Company is committed to excellence in every aspect of our business. We are one of the leading hosted PBX and SIP trunk service providers offering complete cloud communication solutions to help you grow your business in the cloud. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Rich is awesome. He fixed our home telephone land line that other contractors failed to do. I would strongly suggest hiring Rich!!"
Mladen C on August 2023
RiLo Communications Limited Liability Company is committed to excellence in every aspect of our business. We are one of the leading hosted PBX and SIP trunk service providers offering complete cloud communication solutions to help you grow your business in the cloud. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Rich is awesome. He fixed our home telephone land line that other contractors failed to do. I would strongly suggest hiring Rich!!"
Mladen C on August 2023
FAQs for generator installation projects in Denver, CO
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
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.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
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