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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon15
    Verified energy efficiency auditing services reviews

Verified Reviews for Energy Efficiency Auditing pros in Portland, ME

*The Angi rating for Energy Efficiency Auditing companies in Portland, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

*The HomeAdvisor rating for Energy Efficiency Auditing companies in Portland, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

Last update on December 07, 2025

Find Energy efficiency auditors in Portland

Sunniva Energy LLC

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Sunniva Energy LLC

No reviews yet
2 years of experience

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."

Avatar for RSS Solar

RSS Solar

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RSS Solar

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Free onsite estimate

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.

Avatar for Power Choice Now

Power Choice Now

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Power Choice Now

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Deregulated energy gives you full control over your electricity bill. See how powerful you can be when you choose your energy supplier at Power Choice Now. With PowerChoiceNow.com you have the power to spend less on electricity and more on fun stuff. Find the best offer for your needs. Go On, Be Powerful!

Deregulated energy gives you full control over your electricity bill. See how powerful you can be when you choose your energy supplier at Power Choice Now. With PowerChoiceNow.com you have the power to spend less on electricity and more on fun stuff. Find the best offer for your needs. Go On, Be Powerful!

Avatar for USA Alarm Service, Inc

USA Alarm Service, Inc

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USA Alarm Service, Inc

No reviews yet
29 years of experience

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

Solar Wolf Energy

2.00(
2
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Solar Wolf Energy

2.00(
2
)
10 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Superior Energy Solutions

3.67(
3
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Superior Energy Solutions

3.67(
3
)
Customers say: True professional
25 years of experience

Superior Energy Solutions is a one stop energy solutions company. Through an education approach we help people find areas to lower their energy usage and save money, all while living more comfortable lives.

"Job knowledge good- Price very expensive! Price gouging for sure!"

Gary H on March 2023

Superior Energy Solutions is a one stop energy solutions company. Through an education approach we help people find areas to lower their energy usage and save money, all while living more comfortable lives.

"Job knowledge good- Price very expensive! Price gouging for sure!"

Gary H on March 2023

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Energy Efficiency Auditing questions, answered by experts

A small sump pump running infrequently uses an average of 10 kilowatt-hours (kWh) of electricity per month. The average cost for electricity is $0.171 per kWh. The size and use frequency affect how much electricity it uses. Sump pumps average one-third to one horsepower (hp) motors. One hp is equal to 745.7 watts. Watts multiplied by the time your pump is running divided by 1,000 equals your average kWh. Multiply kWh by your average cost of electricity. In areas with high rain or a marsh basin, the average cost can be as high as $15-$25 a month.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

Yes, energy-efficient windows really can make a difference. As long as energy-efficient windows are properly installed and maintained, they can reduce your energy bill and offer significant savings.

While many states require all new construction to undergo blower door tests, it’s not a requirement for existing homes. But in both cases, a blower test helps confirm that the contractor has sealed the exterior, that the type of ductwork installed is functioning properly, and that your home is as efficient as possible.

The Portland, ME homeowners’ guide to energy efficiency auditing services

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

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