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Welcome to E3 Power

Xcel energy preferred contractor

At E3 Power, an Xcel energy approved contractors and home energy audit company in Denver, our company’s goal is to help all Colorado businesses and families find the best, most energy-efficient solution for any given project. What that means for you is that we will not try to sell you a product or a service that you don’t need, or a “silver bullet” solution that isn’t likely to pay off in the long run. Rather, we will conduct an in-depth analysis of your home or building to find the most affordable, cost-effective long term solution for comfort, safety, and energy efficiency to give you an Xcel energy-smart home. Services include:

  • home energy audits
  • commercial energy audits
  • insulation consulting
  • air sealing consulting
  • lighting consulting
  • RESNET HERS Rating
  • ResCheck
  • Manual JDS
  • drone services

We have years of experience and expertise with energy-efficient products and services, manual JDS HVAC duct design, REScheck, RESNET HERS rating, home energy scoring, and the many incentives available for going green in Colorado. Here at E3 Power, we want to show you why we are a highly recommended energy consultant and energy audit company in Denver.

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home energy audits

During our home energy audits, e3 Power uses a variety of high-tech, state-of-the-art tools and instruments to identify the key areas where your home is wasting energy. Included in our audit reports are our recommendations for the most cost-effective ways to improve energy efficiency, comfort, and indoor air quality.

Energy audits for commercial buildings

E3 Power is a highly recommended, certified commercial building energy audit consultant in Denver. We offer residential audits and commercial energy audits for owners and managers of commercial buildings who are interested in achieving an energy-efficient business space, reducing overhead costs, improving occupant comfort, and reducing environmental impact.

Blower door testing

Blower door testing is the best way to measure air leakage in a home or building. It’s an integral aspect of an energy assessment, and in many cases, blower door testing is required by building code.


The Home Energy Rating System (HERS) Index is the INDUSTRY STANDARD by which a home’s energy efficiency score is measured. It’s also the NATIONALLY RECOGNIZED system for inspecting and testing a home’s energy performance—over 3 million homes in the United States have been HERS rated.

Manual J/S/D/T Calculations

Many HVAC contractors skip Manual J, S, D, and T calculations, preferring to rely on estimates rather than put in the effort to correctly size and design a new HVAC system. But e3 Power has seen enough poorly designed and improperly sized heating and cooling systems installed throughout Colorado to know the importance of taking the time to do the job right.

Commercial Services

Schedule a commercial building energy audit with e3 Power to help reduce energy usage and improve indoor comfort. Using advanced building science expertise and technology, we’ll help you lower overhead costs, improve occupant comfort, and cut back environmental impact.

residential Services

Find out how you could be saving money and making your Colorado house more comfortable with a home energy audit from e3 Power. Our experienced independent auditors can give you valuable insights into your home’s energy use that you can use to schedule energy efficiency upgrades.

What Is the HERS Rating System and Why Is It Important? blog header image

What Is the HERS Rating System and Why Is It Important?

Home efficiency upgrades offer numerous benefits to Denver area homeowners, like more comfort and lower utility bills. In addition to …
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How Do I Keep My Home Warm This Winter? With Insulation & Air Sealing! blog header image

How Do I Keep My Home Warm This Winter? With Insulation & Air Sealing! 

Are you having trouble staying comfortable in your Denver home? With the frigid temperatures we’ve had so far this winter, …
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What Happens During a Commercial Energy Audit? blog header image

What Happens During a Commercial Energy Audit?

Understanding the Value of Commercial Energy Audits Commercial energy audits are instrumental in transforming business spaces into energy-efficient environments. The …
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What Can a Lighting Consultation Do for My Business? blog header image

What Can a Lighting Consultation Do for My Business?

When it comes to finding ways for your business to save energy, lighting might not be the first thing that …
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