Generator install costs depend on your project and location. Check with a local pro for your specific job.
A generator that can power all essential appliances and HVAC costs at least $4,200 in Denver.
Local generator installation costs about $190 per hour in labor fees.
Generator installation can provide a 3% to 5% return on investment for your Denver property.
Hiring a professional to install your generator can ensure it’s reliable when you need it.
The average cost to install a whole-house generator in Denver is $1,865, with prices often ranging from $662 to $3,068, depending on generator size and type. Having a whole-house generator to back up your home's power can make all the difference in Denver. Occasional high winds and fluctuating weather can make life unpredictable and lead to power outages that cause property damage.
Several factors influence the cost of installing a whole-home generator in Denver, Colorado.
Use this chart to help you estimate the total cost of your whole-house generator by size and capacity.
| Size in kW | Average Cost Range | Home Size |
|---|---|---|
| 1–6kW | $500–$1,800 | Refrigerator, freezer, sump pump, lighting, and a few small appliances |
| 7.5–10kW | $2,800–$5,200 | All essential appliances plus a well pump, furnace fan, and additional lighting and outlets |
| 14–18kW | $4,200–$7,200 | All essential appliances plus air conditioning, hot water heater, and additional appliances |
| 20–24kW | $5,800–$9,200 | All essential and non-essential appliances, including multiple air conditioners and electric ranges |
| 26–32kW | $7,500–$18,000 | All home appliances and systems, including larger HVAC systems and multiple hot water heaters |
| 36–38kW | $14,000–$22,000 | All home appliances and systems, including commercial-grade equipment |
| 45–48kW | $16,200–$60,000 | All home appliances and systems, including multiple air conditioners, electric ranges, and commercial-grade equipment |
There are several types of generators worth considering when determining whether a whole-house generator is right for you.
| Generator Type | Generator Capacity | Average Cost |
|---|---|---|
| Portable generators | 1kW–7.5kW | $500–$2,800 |
| Partial generators | 9kW–20kW | $2,800–$9,200 |
| Whole-house generators | 22kW–48kW | $5,800–$60,000 |
On average, you’ll spend about $20 to $200 daily to run a 15-to-20-kW whole-house generator in Denver. But not all fuels are alike, and depending on the brand and fuel you choose, you might spend far more than you expected in fuel costs.
Here is how much each fuel type costs per year or unit:
| Fuel Type | Cost |
|---|---|
| Natural gas | $1,400–$14,200 per year |
| Liquid propane | $2,000–$21,000 per year |
| Diesel | $2,800–$18,600 per year |
| Gasoline | $500–$3,100 per year |
| Solar generators | $2,000–$25,000 (unit price) |
| Battery back-up | $10,000–$25,000 (unit price) |
When you hire a generator installation pro in Denver, Colorado, expect to pay an average of $190 per hour. For smaller installations that only take a half day or so, this can add a few hundred dollars to your total. For more complex, multi-day installations, you could pay up to $10,000 for labor alone.
The investment is worthwhile, however, since pros can assure that your whole-house generator installation is to code in Denver and meets your backup power needs in a safe and efficient way. The professional installation process involves several services:
Site evaluation
Load calculation to determine what size generator you need
Permit applications
Utility hookup coordination
Ordering and scheduling equipment deliveries
Installing and curing a concrete pad
Placing and connecting the generator to utilities
Testing the system
If you live in an area that experiences frequent outages, expect the average return on investment (ROI) for a whole-house generator to be roughly 3% to 5% of your property value.
Some other pros of generators are that they help prevent additional costs, such as damage from frozen pipes, sump pump failures, spoiled food, and lost work-from-home hours. They can also help keep medical equipment operational.
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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