The energy efficiency industry within Indiana comprises various companies dedicated to establishing sustainable, reliable power solutions. These entities provide both residential and commercial customers with innovative tools and services designed to reduce environmental impact and promote efficient energy usage. Products offered range from advanced insulation materials to low-energy lighting systems, developed with a forward-thinking approach towards our planet's future. This industry is poised for growth, attributing to advancing technologies and increasing awareness about climate change among businesses and individuals alike.


Top 20 energy efficiency companies in Indiana

1. AES Indiana

  • Website: aesindiana.com
  • Headquarters: Indianapolis, Indiana, United States
  • Founded: 1927
  • Headcount: 1001-5000
  • LinkedIn

AES Indiana is an energy company that aims to provide reliable and sustainable power to its customers. They offer various services and products to help individuals and businesses save energy and reduce their carbon footprint.


2. Knauf Insulation North America

Knauf Insulation is a manufacturing company that specializes in providing innovative insulation solutions. Their mission is to challenge conventional thinking and create products that shape the way we live and build in the future. They prioritize care for their employees, customers, and the environment. With a focus on sustainability and energy efficiency, Knauf Insulation offers a range of insulation products for residential and commercial use.


3. Energy Systems Group (ESG)

Energy Systems Group is a company that specializes in comprehensive energy conservation and infrastructure improvements. They provide services such as facility assessment, engineering, design, equipment selection, project management, and contract administration. Their projects include air handling unit replacements, retrofitting, low flow fume hood replacements, lighting system installations, and pipe insulation replacements. They have been recognized with awards for their innovative building design achievements.


4. WaterFurnace International

WaterFurnace is a company that specializes in geothermal and water source heat pumps. With over 35 years of experience, they offer efficient and cost-effective solutions for heating, cooling, and hot water needs for both residential and commercial buildings worldwide.


5. Apex Energy Solutions

Apex Energy Group is a company that specializes in providing energy-efficient replacement windows and building products for homes. They promise to offer products, information, and services that give customers peace of mind and allow them to focus on what matters. With a history of innovation, Apex Energy Group is dedicated to creating a better living environment for homeowners.


6. Wabash Valley Power Alliance

  • Website: wvpa.com
  • Headquarters: Indianapolis, Indiana, United States
  • Founded: 1963
  • Headcount: 51-200
  • LinkedIn

Wabash Valley Power Alliance (wvpa.com) is an energy company offering power supply diversity and energy management services. They specialize in serving various industries such as agribusiness, biomedical, data centers, logistics, and manufacturing. Their expertise lies in traditional power plants, alternative fuel sources, and decarbonization strategies. They provide rebate applications and industry-specific solutions to help businesses improve efficiency and reduce costs. With a deliberate focus on customer satisfaction, WVPA aims to be a reliable partner in the energy sector.


7. Indiana Municipal Power Agency

  • Website: impa.com
  • Headquarters: Carmel, Indiana, United States
  • Founded: 1983
  • Headcount: 51-200
  • LinkedIn

IMPA is a non-profit organization owned by municipally-owned electric utilities. It provides low-cost, reliable, and environmentally responsible wholesale power supply to its 61 member communities in Indiana and Ohio. IMPA focuses on sharing power resources, developing renewable energy projects, and offering cost-effective services beyond power supply. The company prioritizes economic development, energy efficiency, and green power programs.


8. Inovateus Solar

  • Website: inovateus.com
  • Headquarters: South Bend, Indiana, United States
  • Founded: 2008
  • Headcount: 11-50
  • Latest funding type: Private Equity
  • LinkedIn

Inovateus is a company specializing in solar waste recycling programs and sustainable solutions for utility solar projects. They offer services such as reducing construction waste, recycling and repurposing waste products, and creating zero-construction waste goals. With a strong passion for the solar industry, Inovateus works with Fortune 500 companies, building better community relationships and enhancing environmental stewardship.


9. Power Moves

  • Website: powermoves.com
  • Headquarters: Indianapolis, Indiana, United States
  • Founded: 2010
  • Headcount: 51-200
  • LinkedIn

Power Moves offers energy efficiency programs for homeowners through their local electric cooperatives. They provide resources for making homes more energy efficient and sustainable.


10. Greenwave Family of Companies

Greenwave is an energy solutions service platform that offers a complete energy package to support energy conservation, smart energy, and energy savings. Its products and services fulfill promises made to its partners and customers, and it ensures energy consumers are efficient, sustainable, and using a green energy solution.


11. Casey Electric and Solar, LLC

Casey Solar is a solar energy company that specializes in designing and building solar arrays for industrial, commercial, and multi-residential clients. They offer highly-trained, industry-certified master electricians, with years of experience to work with their clients, providing high-quality projects on time and within budget.


12. Green2Sustainable

Green2Sustainable is a company focused on providing sustainable solutions to businesses that aim to reduce their carbon footprint, save energy, and increase efficiency.


13. W C O Sales & Supply Unltd

The website contains a list of solar energy products, including solar water heaters, air heating systems, and collector panels, from various manufacturers. The products include different types of tanks, valves, controllers, and other components.


14. Solar UV Solutions

Solar UV Solutions provides cost-effective and energy-efficient solar thermal heating solutions for commercial, industrial, and agricultural businesses. They are the exclusive distributor of Solar America Solutions’ SunQuest 250 solar thermal collector.


15. EMCOR Construction Services Midwest

EMCOR Construction Services Midwest is a division of Shambaugh & Son, which is a subsidiary of EMCOR Group Inc, a Fortune 500 company in mechanical, electrical, process specialty contracting, and building services. They offer energy solutions, commissioning/recommissioning, building operation services, and water/wastewater treatment plants, catering to the needs of schools, governments, and other public organizations, with a focus on cost-effectiveness and energy efficiency.


16. Level Solutions Group

Level Solutions is a provider of HVAC and renewable energy solutions. They offer products such as air turnover systems, dehumidifiers, and chillers to industrial and commercial customers.


17. MegaWattPower

  • Website: megawattpower.com
  • Headquarters: Evansville, Indiana, United States
  • Headcount: 11-50

Megawatt Power is a recently registered company offering power-related services and solutions.


18. Sustainable Earth

Sustainable Earth is focused on providing affordable and reliable sustainable solutions for homes and businesses. They offer a wide range of eco-friendly products and services.


19. Indiana Michigan Power

Indiana Michigan Power is an electric utility company that provides electricity to residential, commercial, and industrial customers in Indiana and Michigan. They offer a wide range of services including billing and payment assistance, energy usage analysis, renewable energy programs, and electric vehicle charging options.


20. Star Distributed Energy

Star Distributed Energy is a leading provider of comprehensive energy solutions to commercial and industrial clients.


Want to find more energy efficiency companies?


If you want to find more companies that offer sustainable solutions ranging from insulation to low-energy lighting systems you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


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  • Ownership: Which of these are private equity backed? Which are family-owned?
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...and a lot more!