The renewable thermal power industry, embedded in the broader renewable energy sector, encompasses a diverse array of companies that develop, generate, and distribute green energy. Key players in the market range from those operating vast portfolio of renewables, including wind, solar, hydro, biomass, and even newer technologies like hydrogen, through to firms focusing on niche specialties within the field. As the global energy sector pivots away from fossil fuels, these companies are growing in size and scope, offering sustainable alternatives and contributing to green economies. The industry's future appears positively charged, set for major expansion as the world continues its transition towards cleaner, sustainable energy solutions.


Top 24 Renewable Thermal Power Companies

1. Rwe

  • Website: rwe.com
  • Headquarters: Essen, Niedersachsen, United Kingdom
  • Founded: 1898
  • Headcount: 10001+
  • LinkedIn

RWE is a leading investor in renewable energy in Poland, focusing on large PV power plants on the ground. They develop, construct, and operate projects throughout their lifecycle, engaging with local communities and establishing long-term partnerships. RWE's portfolio includes offshore and onshore wind, solar, hydropower, hydrogen, batteries, biomass, and gas.


2. Iberdrola

  • Website: iberdrola.com
  • Headquarters: Bilbao, Biscay, Spain
  • Founded: 1840
  • Headcount: 10001+
  • Latest funding type: Post Ipo Debt
  • LinkedIn

Iberdrola is a leading company in the renewable energy sector, specializing in offshore and onshore wind, photovoltaic, hydroelectric power, and smart grid solutions. Committed to sustainability and the SDGs, Iberdrola is driving the energy transition and reducing environmental impact through innovative technologies.


3. NextEra Energy, Inc.

  • Website: nexteraenergy.com
  • Headquarters: Juno Beach, Florida, United States
  • Founded: 1985
  • Headcount: 10001+
  • Latest funding type: Post Ipo Equity
  • LinkedIn

NextEra Energy is America's leading sustainable energy company, specializing in the production and distribution of renewable energy sources. They offer customized solutions to help businesses achieve decarbonization goals and reduce carbon emissions. With a focus on innovation and investment in American infrastructure, NextEra Energy is a key player in reshaping the energy industry.


4. AboitizPower

AboitizPower is the Philippines' leading provider of renewable energy, offering secure and affordable access to sustainable power. With a focus on renewable energy capacities, they aim to achieve a balance between Cleanergy and thermal portfolios.


5. Exergy ORC

EXERGY is an innovative organic rankine cycle company specializing in heat recovery from power stations and industrial processes. They offer sustainable and efficient power generation solutions using their Radial Outflow Turbine technology.


6. NextEra Energy Seabrook, LLC

NextEra Energy Resources is a leading sustainable solutions provider that offers customized solutions to businesses for decarbonization and reducing carbon emissions. They specialize in increasing renewable fuel production, grid-scale renewables, onsite solar, community solar, energy storage, and energy efficiency services. With a focus on clean energy, they help businesses reshape their energy consumption and offer wholesale and retail supply of renewable fuels. NextEra Energy Resources is committed to sustainability and offers innovative solutions to meet clean energy goals.


7. Rackam

Rackam is a solar thermal solutions company that specializes in providing green and recyclable equipment for industrial process heat. With a focus on real-time data and remote monitoring, Rackam helps businesses fight climate change while achieving high financial performance. They offer customized solar heating solutions for industries, municipalities, and farms, with a proven record of durability in harsh conditions.


8. ElectraTherm

  • Website: electratherm.com
  • Headquarters: Flowery Branch, Georgia, United States
  • Founded: 2005
  • Headcount: 11-50
  • Latest funding type: Series Unknown
  • LinkedIn

ElectraTherm is a company that specializes in waste heat recovery solutions. They offer Organic Rankine Cycle (ORC) systems that convert unused heat from engines into clean electricity. By utilizing their systems, customers can increase efficiency by up to 10% without additional fuel consumption or emissions.


9. Triosan Holding

Triosan Holding is a company focused on the construction of geothermal power plants for the production of heat and electricity, servicing greenhouse complexes, and providing thermal energy to the population.


10. Access Energy

  • Website: access-energy.com
  • Headquarters: Cerritos, California, United States
  • Headcount: 11-50

Access Energy produces reliable clean electricity by using the latest technology of Organic Rankine Cycle (ORC) and Integrated Power Module. The fully automated systems require no fuel or oil lubrication and utilize environmentally friendly, non-combustible and non-flammable working fluid.


11. Solar Energy

Solarenergy.com is a company that specializes in providing solar energy solutions for residential and commercial buildings. They offer a range of services including solar panel installation, solar power systems design, and solar energy consultation. With a focus on renewable energy, their goal is to help customers reduce their carbon footprint and lower their energy costs.


12. STEAG Energy Services GmbH

STEAG Energy Services is a company that offers comprehensive IT solutions for facility monitoring, optimization, and operation management. They support the planning, operation, and maintenance of power plants, waste incineration plants, cement plants, and wind turbines. Their range of services encompasses fossil fuel and renewable energy supply, as well as electrical and heating networks and energy storage. They are experts in developing sustainable and cost-effective supply concepts.


13. Capital Sun Group

Capital Sun Group is a solar energy solutions provider, offering services to both commercial and residential customers. With years of experience and reliable products, they aim to provide customers with affordable and sustainable energy solutions.


14. C.E.M.I. S.p.A

  • Website: cemispa.com
  • Headquarters: Ravenna, Ravenna, Italy
  • Founded: 1984
  • Headcount: 51-200
  • LinkedIn

CEMI Spa is a company that designs and manufactures electrical systems for the Industrial and Tertiary sectors. They specialize in installation of industrial electrical systems, special fire-fighting and extinguishing systems, cogeneration, biogas, geothermal and solar thermal plants, and special systems for medical equipment.


15. Green EnTech

  • Website: engreengroup.com
  • Headquarters: Lam Luk Ka, Pathum Thani, Thailand
  • Headcount: 11-50

ENGREEN is an Engineering Technology and Trading company specializing in HVAC air-conditioning and power plant energy solutions in South East Asia with a focus on Green Energy.


16. Ega

  • Website: ega-srl.com
  • Headquarters: Mestrino, Veneto, Italy
  • Headcount: 1-10

EGA is a leader in the design and construction of plants for the processing of polyurethane, renewables, refrigeration, clean rooms, air conditioning, mechanical and electrical. There are numerous projects at national and international level, followed by technicians whose professionalism and competence is guaranteed by training programs and update.


17. Clean Energy Ideas

At Clean Energy Ideas, we are committed to ensuring our website is accessible to all our visitors. We strive to deliver a standards compliant website that's accessible to a wide audience and have therefore followed the Web Content Accessibility Guidelines (WCAG) wherever possible to ensure our website is coded in a way to achieve this.


18. SolReport

Solar energy news & data dashboard, providing a mixture of industry headlines, financial trends & local resources.


19. World of Renewables.com

World of Renewables is an online platform that provides news, information, and resources related to renewable energy sources and technologies.


20. Climart Srl

  • Website: climartsrl.com
  • Headquarters: Civitanova Marche, Macerata, Italy
  • Headcount: 11-50

Climart srl offers energy efficiency solutions for residential and commercial customers. Their services include renewable energy technologies such as wind and solar power, as well as energy-efficient heating, cooling, and irrigation systems.


21. Rota&Messena

Rota & Messena is a technical partner offering sustainable solutions in the fields of heating, air conditioning, water purification and renewable energy.


22. Gundersen Envision

Gundersen Envision is a program offered by Gundersen Health System, which promotes environmental sustainability within the healthcare industry. By providing leadership and innovative solutions for reducing consumption and creating cleaner energy, Envision aims to show that 'green' is healthy and economically beneficial.


23. Green Space

Green Space Energías Renovables offers energy-saving and production solutions for homes, businesses, and infrastructure. They specialize in renewable energy, efficiency, and profitability.


24. Akin Law Group

  • Website: akinlawgroup.com
  • Headquarters: Westerville, Ohio, United States
  • Headcount: 11-50

A company specializing in green energy solutions such as solar thermal, solar power, water purification, air-source and geothermal heat pumps, and underfloor heating systems.


Want to find more renewable thermal power companies?


If you want to find more companies that offer diverse renewable energy solutions, constructing and operating eco-friendly power generators 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!