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*The HomeAdvisor rating for Energy Efficiency Auditing companies in Summit, MI 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 April 14, 2026

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Avatar for Stellux Management, LLC
Stellux Management, LLC
New to Angi
Energy Audit - For Business

Serving Summit, MI and surrounding areas

In business since 2013

Free estimates

Stellux Management is a Michigan-based ESCO (Energy Savings Company) specializing in LED lighting and controls. We are also a DTE Energy Designated Trade Ally and a Registered Trade Ally for Consumers Energy. We have completed over 115 major LED lighting projects saving our clients a total of 3,000,000 kWh of energy, while earning hundreds of thousands of dollars in incentives and rebates. Our team of LED experts is capable and ready to help guide your company through the LED conversion process. We strive to help you raise the level of awareness for all employees by improving the lighting environment around them. By switching to LED, you will see immediate results in your electric energy bill through the reduction of lighting kWh usage by 50% -80%... saving you money!

165w LED Linear High Bays
100w LED Area Parking Lot Pole Lights
50w LED 2x4 Flat Panels
50w LED Cleaning Flood Lights
5.5w LED Movie Theatre Wall Sconce

+12

Response time20 mins
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Avatar for Greenshield Insulation
Greenshield Insulation
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Summit, MI and surrounding areas

In business since 2016

Free estimates

Greenshield Insulation is a family-owned and operated company proudly serving Mattawan and surrounding areas within a 40-mile radius since 2016. We specialize in high-quality residential and light commercial insulation services, including spray foam (open and closed cell), blown-in cellulose, insulation removals, attic and sidewall retrofits, and ventilation solutions. With over 50 years of combined experience, we’re SPF-certified, licensed, and insured—bringing knowledge, professionalism, and attention to detail to every project. Our team helps homeowners lower energy bills, improve comfort, and qualify for available rebates and tax credits. We offer free estimates and honest guidance to help you choose the best insulation for your home or building. Serving Kalamazoo, Portage, Paw Paw, Battle Creek, and more.

Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts

+11

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Energy Efficiency Auditing questions, answered by experts

Not all homes are suited for solar panel systems. Older roofs or those in poor condition may need repairs or replacement before solar panels can be installed. Some other factors to consider are the amount of sunlight your roof receives, the roof’s orientation and pitch, and any shading from nearby trees or buildings.

String lights require electricity, but not an excessive amount, especially when compared to other lighting fixtures. LED rope lights, for instance, consume around one watt per foot. Running six or seven light strings simultaneously should only cost you around $10 to $15 each month. You can save even more money by remembering to turn off your lights during daylight hours. 

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

Provide utility bills and clear access to all areas of the home, including the attic and basement.

The Summit, MI 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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