Colorado hosts some of the most innovative geothermal energy companies in the US. The industry is rapidly evolving, focusing on harnessing the earth's natural heat to produce low-carbon, renewable energy. These companies vary in their products and services, some specializing in offering end-to-end solutions from production to distribution, while others focus on cutting-edge technology development and use. These companies offer expertise in construction, installation, maintenance of geothermal systems, and next-generation fuel commercialization. As the world strives to lower greenhouse gas emissions, the future looks promising for the Colorado geothermal sector.


Top 20 geothermal energy companies in Colorado

1. Gevo, Inc.

  • Website: gevo.com
  • Headquarters: Englewood, Colorado, United States
  • Founded: 2005
  • Headcount: 51-200
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Gevo commercializes the next generation of gasoline, jet fuel, and diesel fuel with the potential to achieve zero carbon emissions. They use low-carbon renewable-resource-based carbohydrates as raw materials and are developing renewable electricity and renewable natural gas. Gevo's fuels have substantially reduced greenhouse gas emissions compared to standard petroleum fossil-based fuels. They also enable certain plastics to be made with more sustainable ingredients.


2. GeoSynFuels

Geosynfuels is a company specializing in the production and distribution of alternative energy sources, including biofuels and geothermal energy.


3. Stellar Energy Contractors

Energy-contractors.com is a company that offers a wide range of services to clients in the energy sector. Their services include energy audits, construction, installation, and maintenance of various energy systems such as solar, wind, and geothermal.


4. GeoSolar Technologies

  • Website: geosolarplus.com
  • Headquarters: Denver, Colorado, United States
  • Founded: 2020
  • Headcount: 11-50
  • Latest funding type: Seed
  • LinkedIn

GeoSolarPlus is a company that offers SmartGreen™ Homes powered by Nature's Energy. Their homes are all-electric and feature air purification and heating/cooling systems.


5. IKAV Energy Inc

  • Website: ikav.com
  • Headquarters: Durango, Colorado, United States
  • Founded: 2020
  • Headcount: 201-500
  • LinkedIn

IKAV is an international asset management group offering a comprehensive suite of services including asset management, technical & engineering expertise, development & EPCM, operational maintenance, and financial expertise.


6. Energy Environmental Corporation

Energy Environmental Corporation provides high-performance integrated HVAC and renewable energy systems for sustainable living and environmentally friendly systems with a focus on energy savings and health, comfort and safety of occupants.


7. J Tillman Group

The J Tillman Group is not about building as many houses as possible - we focus on quality and detail not quantity. Our rigorous standards ensure the highest possible results. We are always professional and fair, working endlessly to provide the best value for our clients. All agreements between our company and our clients must be amiable or we won't make them. We stand behind what we build. We will always be forthright, respectful and patient when working with you. We are flexible and can work within your timeline, paying close attention to every detail and communicating as effectively as possible to make sure your requests are met. We will always put your best interests first in every decision we make.


8. Bestway Mechanical

Bestway Mechanical is a renewable energy and mechanical solutions company based in Colorado Springs. They offer expert design and installation for new and existing homes and commercial businesses, specializing in solar electric PV, solar thermal, geothermal, radiant heating, and plumbing services.


9. Onward Energy

Onward Energy is a reliable energy company that is dedicated to building strong partnerships and propelling the future of energy forward. They offer gas, thermal, solar, and wind energy solutions to address the U.S. energy market's transition to lower carbon.


10. Rmi

  • Website: rmi.org
  • Headquarters: Boulder, Colorado, United States
  • Founded: 1982
  • Headcount: 201-500
  • Latest funding type: Grant
  • LinkedIn

RMI.org is an organization dedicated to transforming the global energy system to reduce greenhouse gas emissions. They work on various programs and initiatives such as carbon-free buildings, electricity, and transportation. RMI aims to bring about sustainable solutions and promote climate-aligned industries.


11. Renewable & Alternative Energy Management, LLC

RAEM is a Golden, Colorado based consultancy specializing in the evaluation and management of advanced energy technologies. While our expertise covers a spectrum of energy resources ranging from conventional fossil fueled resources to renewables, our focus is on clean energy technologies. We serve as independent, knowledge-based advisors and consultants to energy and resource users, producers, regulators, and policy makers.


12. Platte River Power Authority

  • Website: prpa.org
  • Headquarters: Fort Collins, Colorado, United States
  • Founded: 1973
  • Headcount: 201-500
  • LinkedIn

Platte River Power Authority is a not-for-profit, community-owned public power utility that generates and delivers safe, reliable, environmentally responsible and financially sustainable energy and services to Estes Park, Fort Collins, Longmont and Loveland, Colorado, for delivery to their utility customers.


13. Pro Bid Energy

Pro Bid Energy offers solar energy services for residential and commercial clients. Services include installation, maintenance, temporary removal, and replacement of solar panels, inverters, batteries, EV car chargers, generators, and air purification systems.


14. Alliance for Sustainable Energy, LLC

Alliance for Sustainable Energy is the National Renewable Energy Laboratory's management and operating contractor, focused on achieving national goals for renewable energy. They offer expertise in strategy, leadership, stewardship, and engagement, while also engaging positively in the communities in which the lab works.


15. DMEA - Delta-Montrose Electric Association

  • Website: dmea.com
  • Headquarters: Montrose, Colorado, United States
  • Founded: 1938
  • Headcount: 51-200
  • LinkedIn

Delta-Montrose Electric Association (DMEA) is a local electric cooperative that caters to the energy needs of families and businesses in Montrose and Delta counties. Committed to a brighter future, DMEA supports programs such as emerging energy technologies, local renewable energy development, and the deployment of a fiber internet subsidiary called Elevate Internet.


16. Radia, Inc.

  • Website: radia.com
  • Headquarters: Boulder, Colorado, United States
  • Headcount: 51-200
  • LinkedIn

Radia is a company focused on accelerating the energy transition. Through their innovative GigaWind™ technology, enabled by the WindRunner™ platform, Radia aims to drive the adoption of renewable energy sources.


17. Crimson Renewable Energy Holdings, LLC

Crimson Renewable Energy is a leading producer of ultra-low carbon biodiesel in California. They specialize in converting waste materials, such as cooking oil, into sustainable and cleaner-burning diesel substitutes. With a commitment to local sustainable energy development, they offer tailored contract pricing, robust logistics, and meet client needs with their innovative biodiesel solutions.


18. Catalyze

  • Website: catalyze.com
  • Headquarters: Boulder, Colorado, United States
  • Founded: 2017
  • Headcount: 51-200
  • LinkedIn

Catalyze delivers renewable energy solutions for C&I property owners. They aim to increase property value, generate additional revenue, and meet ESG and regulatory targets.


19. Encorp

  • Website: encorp.com
  • Headquarters: Fort Collins, Colorado, United States
  • Founded: 1992
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

Encorp is a sustainable energy company specializing in combined heat and power solutions. They offer innovative microgrid controls and back-up power systems for various industries including prisons, breweries, hospitals, data centers, and military installations.


20. Simple Energy

Simple Energy is a company that offers energy management solutions to residential and commercial customers. They provide software and services to help customers track and reduce their energy usage, save money on their utility bills, and contribute to a more sustainable future.


Want to find more geothermal energy companies?


If you want to find more companies that offer solutions ranging from geothermal systems construction to fuel commercialization you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
  • Contact data: Who are the owners and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!