Absolute Plumbing, Electrical, Heating & Air
Verified Pro
14 years online4.9(3660)
Generator Installation in Denver, CO
Compare 29 generator installation contractors near you in Denver and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 22, 2026
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Verified Pro Installers
Other Businesses in This Area
Stand-By Power Services Co
Generator Supercenter of Denver
5.0~6 years onlineJD Electrical Home Solutions
5.03½+ years onlinePower Electrical, Heating & Cooling Services
5.03½+ years onlineSalzano Electric Denver
5.016+ years onlineAll Electric
4.98½+ years onlineControlling Systems Heating, AC, and Electrical Repair
4.921 years onlineGenesis Electrical
4.91+ year onlineRocky Mountain Generator Supply Co
4.96½+ years onlineDiesel Generator Services
4.8Stone Electric
4.8~5 years onlineFlaugher Generator & RV Solutions
4.73+ years onlineGenerator Source
4.423+ years onlineWagner Power Systems
4.3~28 years onlinePower Equipment Company
4.1Power Systems West
4.09½+ years onlineDenver Outdoor Power
3.7Spitzer Industrial Products
3.523+ years onlineGenerator Installation in Nearby CO Cities
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About Generator Installation in Denver
Generator installation ranges from portable transfer switch setups to whole-home standby generators that start automatically during power outages. Standby generators connect to your electrical panel and run on natural gas or propane.
Typical costs: A transfer switch for a portable generator costs $500–$1,500 installed. Whole-home standby generators (Generac, Kohler) typically run $5,000–$15,000 fully installed including the concrete pad, gas line, and electrical connections.
Common projects include:
- Whole-home standby generator installation
- Transfer switch installation for portable generator
- Generator maintenance and load testing
- Natural gas line connection for generator
- Commercial backup power systems
Standby generator installations require electrical permits and often gas or plumbing permits for the fuel line. Some areas also require noise or setback compliance.
Frequently Asked Questions
- How much does generator installation cost in Denver?
- A whole-home standby generator (14–22 kW) with automatic transfer switch typically costs $5,000–$15,000 installed. The unit itself is roughly half the cost — installation includes the concrete pad, gas line, electrical hookup, and permits.
- How do I find a reliable generator installation contractor in Denver?
- Choose an installer authorized by the generator manufacturer (Generac, Kohler, Briggs & Stratton). They should perform a load calculation to properly size the unit, not just recommend the biggest one. Ask about warranty terms and annual maintenance plans.
- Do I need a permit for generator installation in Denver?
- Yes — standby generators require electrical permits and typically gas or plumbing permits for the fuel connection. Your installer should handle all permit applications and coordinate inspections.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Denver and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.