The renewable energy sector is focused on generating power from natural resources, which are replenished over time. This industry includes companies dedicated to solar, wind, hydro, and geothermal energy, actively developing innovative projects aimed at reducing carbon footprints. As the global demand for clean energy increases, this sector is witnessing substantial growth, driven by technological advancements and supportive environmental policies. Recently, a noticeable shift towards decentralized energy solutions and storage capabilities has emerged, reflecting a commitment to sustainability while catering to rising energy needs.

This list features 16 notable companies in renewable energy, ranging from large corporations to emerging players. They vary in size, with some employing over 10,000 people while others have smaller teams of less than 500. Headquartered in diverse locations—including Europe, the United States, and Australia—these companies were founded between 1980 and 2016. Many specialize in specific energy solutions like wind, solar, or energy storage, showcasing a wide array of expertise within the industry.

Continue reading to discover the top renewable energy companies.

Top 16 Renewable Energy Companies

1. Vattenfall

• Website: group.vattenfall.com
• Ownership type: Venture Capital
• Headquarters: Solna, Stockholm, Sweden
• Employee distribution: Sweden 33%, Netherlands 28%, Germany 21%, Other 18%
• Latest funding: Other (Debt), $315.7M, May 2023
• Founded year: 1909
• Headcount: 10001+
• LinkedIn: vattenfall

Vattenfall, headquartered in Solna, Stockholm, Sweden, is a prominent energy company that specializes in the production and retail of electricity and heat. Founded in 1909, Vattenfall has evolved into one of Europe's largest energy providers, with a workforce of approximately 19,000 employees. The company operates primarily in Sweden, Germany, the Netherlands, Denmark, and the UK. Vattenfall is committed to sustainability, aiming for fossil freedom by 2040. This goal reflects their dedication to reducing dependency on fossil fuels and promoting renewable energy sources. Vattenfall has made significant strides in wind power, having developed the world's first subsidy-free offshore wind farm. Additionally, they are involved in projects aimed at producing fossil-free steel and expanding electric vehicle infrastructure. In May 2023, Vattenfall secured funding of approximately $315 million, which underscores their ongoing investment in innovative energy technologies and sustainable solutions.

2. E.ON Uk

• Website: eonenergy.com
• Ownership type: Corporate
• Headquarters: Coventry, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 96%, Other 4%
• Latest funding: $15.3B, July 2002
• Founded year: 1989
• Headcount: 10001+
• LinkedIn: e-on-uk

E.ON UK, founded in 1989 and based in Coventry, England, is a corporate entity that provides electricity and gas services to both residential and business customers. As a subsidiary of E.ON Germany, the company has a strong focus on renewable energy solutions and energy management. E.ON UK plays a crucial role in the UK's energy market, particularly through its involvement in the development of large-scale renewable energy projects. The company aims to assist customers in meeting their energy needs sustainably, reflecting a commitment to environmental responsibility and innovation in energy supply.

3. Ecotricity

• Website: ecotricity.co.uk
• Ownership type: Private
• Headquarters: Stroud, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Latest funding: $43.7M, August 2007
• Founded year: 1995
• Headcount: 501-1000
• LinkedIn: ecotricity

Ecotricity, based in Stroud, England, is a private energy supplier that specializes in green energy solutions. Founded in 1995, it was the world's first green energy company, setting the stage for the global green energy movement. The company offers 100% certified green electricity and a mix of carbon-neutralized natural gas and sustainable green gas. Ecotricity is known for its innovative projects, including the construction of wind and solar farms across the UK. They have also pioneered the concept of green gasmills, which convert grass into sustainable gas, contributing to a carbon-neutral energy supply. With a workforce of approximately 566 employees, Ecotricity serves both residential and business customers, helping them transition away from fossil fuels. The company has received significant funding, with the last reported amount being over £43 million in 2007, which has likely supported its growth and development in the renewable energy sector.

4. Pattern Energy

• Website: patternenergy.com
• Ownership type: Corporate
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 92%, Canada 7%
• Latest funding: December 2024
• Founded year: 2012
• Headcount: 501-1000
• LinkedIn: pattern-energy

Pattern Energy Group LP, based in San Francisco, California, is a corporate entity that specializes in renewable energy. Established in 2012, the company develops, constructs, owns, and operates large-scale wind and solar power projects primarily across North America. With a workforce of around 702 employees, Pattern Energy has built a robust portfolio that includes approximately 30 operating facilities with a total installed capacity of about 6 gigawatts. The company is also involved in energy storage and transmission projects, showcasing its comprehensive approach to renewable energy. Pattern Energy emphasizes sustainable practices and community partnerships, aiming to provide reliable energy solutions while respecting local traditions and environments. Their ongoing projects and initiatives reflect a commitment to accelerating the transition to a sustainable energy future.

5. Res

• Website: res-group.com
• Ownership type: Venture Capital
• Headquarters: Kings Langley, England, United Kingdom (UK)
• Employee distribution: United States (USA) 23%, United Kingdom (UK) 22%, Spain 16%, Other 39%
• Latest funding: January 2019
• Founded year: 1981
• Headcount: 1001-5000
• LinkedIn: res-group

RES Group, founded in 1981 and based in Kings Langley, England, is a prominent renewable energy company specializing in the development, construction, and management of clean energy projects. With a workforce of nearly 4,000 employees, RES operates on a global scale, delivering solutions in wind, solar, energy storage, and green hydrogen technologies. The company has developed over 24 GW of clean energy projects worldwide and supports 41 GW of operational assets. Their services extend beyond project development to include construction management, asset management, and consultancy, ensuring that they optimize the performance and longevity of renewable energy assets. RES is committed to sustainability and actively engages with local communities and stakeholders to create projects that provide mutual benefits. Their extensive experience and comprehensive service offerings position them as a key player in the renewable energy sector.

6. Mainstream Renewable Power

• Website: mainstreamrp.com
• Ownership type: Corporate
• Headquarters: Dublin, Dublin, Ireland
• Employee distribution: Chile 26%, Ireland 22%, South Africa 21%, Other 30%
• Latest funding: Other (Debt), $271.0M, April 2025
• Founded year: 2008
• Headcount: 201-500
• LinkedIn: mainstream-renewable-power

Mainstream Renewable Power is a corporate entity based in Dublin, Ireland, specializing in renewable energy solutions, particularly in wind and solar power generation. Since its inception in 2008, the company has expanded its operations globally, with a notable presence in markets such as Chile, South Africa, and Vietnam. Mainstream focuses on developing both offshore and onshore wind projects, solar photovoltaic (PV) systems, and green hydrogen initiatives. They have successfully raised over €3 billion in project finance and have a significant global pipeline of 24.8 GW. Their approach emphasizes sustainability, community engagement, and innovative solutions tailored to meet the energy needs of governments and organizations. The company has also secured substantial funding, including a recent €271 million debt financing, which underscores its ongoing growth and commitment to renewable energy development.

7. Aydem Enerji

• Website: aydemenerji.com.tr
• Ownership type: Private
• Headquarters: Istanbul, İstanbul, Turkey
• Employee distribution: Turkey 100%
• Founded year: 1980
• Headcount: 10001+
• LinkedIn: aydem-enerji

Aydem Enerji, founded in 1980 and based in Istanbul, Turkey, operates primarily in electricity generation, distribution, and retailing. The company has a strong emphasis on renewable energy, generating power from hydro, wind, and geothermal sources. With over 12,000 employees, Aydem Enerji is dedicated to providing reliable electricity services to residential and business customers. They have made significant strides in the energy sector, being the first private hydroelectric power plant operator in Turkey and the first to manufacture solar cells domestically. Aydem Enerji is also involved in various social responsibility initiatives, focusing on sustainability and community engagement. Their projects include educational programs for children about energy efficiency and environmental conservation, showcasing their commitment to a sustainable future.

8. Scatec Solar

• Website: scatecsolar.com
• Ownership type: Private
• Headquarters: Oslo, Oslo, Norway
• Founded year: 2007
• Headcount: 201-500
• LinkedIn: scatec-solar

Scatec Solar, based in Oslo, Norway, is a renewable energy provider that specializes in solar, wind, and hydro power generation, as well as energy storage solutions. Since its inception in 2007, Scatec has developed a robust portfolio of renewable energy projects across various continents, catering to both governmental and corporate clients. The company operates with a comprehensive business model that includes the development, construction, and operation of renewable energy facilities, focusing on long-term power purchase agreements (PPAs). Scatec's commitment to sustainability is evident in their recent projects, such as the significant solar and battery storage project in Egypt, which aims to enhance energy security and reduce greenhouse gas emissions. Their proactive approach to securing financing and managing projects has positioned them as a notable entity in the renewable energy sector, with a strong emphasis on ethical practices and local value creation.

9. Solarcentury

• Website: solarcentury.com
• Ownership type: Corporate
• Headquarters: London, England, United Kingdom (UK)
• Latest funding: $152.1M, November 2020
• Founded year: 1998
• Headcount: 51-200
• LinkedIn: solarcentury

Solarcentury is a UK-based company founded in 1998, specializing in solar energy solutions. The firm focuses on the design, development, and installation of solar photovoltaic systems for both residential and commercial applications. With a commitment to sustainability, Solarcentury has played a pivotal role in advancing solar technology and promoting the use of renewable energy. The company has been involved in numerous projects across the UK and internationally, contributing to the growth of solar energy infrastructure. They have received significant funding, amounting to over 152 million USD, which underscores their potential for expansion and innovation in the solar sector. Solarcentury's efforts are aimed at making solar energy more accessible and efficient, aligning with global goals for reducing carbon emissions and fostering a sustainable future.

10. Akuo

• Website: akuoenergy.com
• Ownership type: Private Equity
• Headquarters: Paris, Île-De-France, France
• Employee distribution: France 62%, Portugal 7%, United States (USA) 5%, Other 25%
• Latest funding: March 2025
• Founded year: 2007
• Headcount: 201-500
• LinkedIn: akuo-energy

Akuo Energy, based in Paris, France, is a private equity firm specializing in renewable energy. Founded in 2007, the company focuses on the production of solar and wind energy, energy storage solutions, and agrivoltaic projects. With a workforce of approximately 537 employees, Akuo operates in over 20 countries, demonstrating a global reach and commitment to sustainable energy solutions. The company serves a variety of clients, including businesses, agricultural entities, and local governments, assisting them in transitioning to renewable energy sources. Akuo has developed a portfolio of over 1.8 GW of energy capacity in operation and construction, with an additional 20 GW in project development. Their innovative agrivoltaic projects aim to create synergies between agricultural production and energy generation, further enhancing their contribution to environmental sustainability. Akuo's integrated model allows them to manage all aspects of energy production, from development to financing and operation, positioning them as a significant player in the renewable energy market.

11. Vena Energy

• Website: venaenergy.com
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Japan 22%, India 19%, Philippines 18%, Other 41%
• Latest funding: Other (Debt), $580.2M, February 2024
• Founded year: 2012
• Headcount: 1001-5000
• LinkedIn: vena-energy

Vena Energy is a renewable energy company based in Singapore, founded in 2012. The firm focuses on accelerating the energy transition across the Asia-Pacific region by providing solutions in solar energy, onshore and offshore wind, and energy storage. With a workforce of over 1,000 employees spread across multiple countries, including Japan, India, and Australia, Vena Energy is well-positioned to meet the growing demand for sustainable energy. The company has contracted a total capacity of 3.9 GW from its development pipeline, showcasing its active role in expanding renewable energy infrastructure. In 2023, Vena Energy generated more than 4.5 TWh of clean electricity, contributing to significant reductions in greenhouse gas emissions. Their recent funding of approximately $580 million further underscores their commitment to advancing renewable energy projects in the region.

12. Enertrag

• Website: enertrag.com
• Ownership type: Private
• Headquarters: Schenkenberg, Brandenburg, Germany
• Employee distribution: Germany 88%, South Africa 3%, France 3%, Other 6%
• Latest funding: Other (Grant), July 2024
• Founded year: 1992
• Headcount: 1001-5000
• LinkedIn: enertrag-ag

Enertrag SE, based in Schenkenberg, Brandenburg, Germany, is a private renewable energy company founded in 1992. With a workforce of around 614 employees, Enertrag specializes in the development, construction, and operation of renewable energy projects, particularly in wind energy, photovoltaic systems, and green hydrogen solutions. The company serves municipalities and businesses, providing comprehensive project management and operational services aimed at facilitating the transition to sustainable energy sources. Enertrag has a notable presence in Germany, with additional operations in South Africa, France, and Vietnam. Their innovative ENERTRAG Verbundkraftwerk® model integrates multiple renewable technologies, allowing for reliable and demand-driven energy supply. Enertrag has invested significantly in renewable energy infrastructure, with a reported output of 1,800 MW from installed systems and 6.9 GW of renewable plant capacity connected to their proprietary software. This extensive experience and commitment to renewable energy make Enertrag a key player in the industry.

13. Pacific Hydro Australia

• Website: pacifichydro.com.au
• Ownership type: Corporate
• Headquarters: Docklands, Victoria, Australia
• Latest funding: December 2015
• Founded year: 1992
• Headcount: 201-500
• LinkedIn: pacific-hydro

Pacific Hydro Australia, known as Pacific Blue, is an energy provider based in Docklands, Victoria, Australia. Founded in 1992, the company specializes in renewable energy solutions, offering a range of energy plans that cater to residential and small business customers. All their plans are centered around 100% clean energy, allowing customers to reduce their carbon footprint effectively. Pacific Blue operates multiple renewable energy projects across Australia, including wind, solar, and hydro generation assets. Their commitment to sustainability is further highlighted by their community funding initiatives, which have provided over $5 million to local projects. The company is actively involved in developing new renewable energy sites, ensuring a continuous investment in clean energy infrastructure. Through their energy plans, they not only supply renewable energy but also support the growth of additional renewable projects, contributing to a cleaner energy future for Australia.

14. Genneia

• Website: genneia.com.ar
• Ownership type: Private
• Headquarters: Belgrano, Buenos Aires, Argentina
• Employee distribution: Argentina 100%
• Latest funding: Other (Debt), $85.0M, February 2023
• Founded year: 2012
• Headcount: 201-500
• LinkedIn: genneia-s-a-

Genneia is a private renewable energy company based in Belgrano, Buenos Aires, Argentina, founded in 2012. The company specializes in the generation of wind and solar energy, operating several parks across the country. With a workforce of approximately 457 employees, Genneia has made significant strides in the renewable energy sector, contributing 19% of Argentina's total installed renewable energy capacity. Their portfolio includes seven wind parks and three solar parks, with a total capacity exceeding 1,000 MW. Recently, Genneia has been active in financing its projects through green bonds, raising $85 million in early 2023 to support its expansion plans. The company is also involved in various partnerships aimed at providing sustainable energy solutions to businesses, helping them reduce their carbon footprints. Genneia's commitment to sustainability is further reflected in its initiatives to promote energy efficiency and environmental responsibility.

15. Tilt Renewables

• Website: tiltrenewables.com
• Ownership type: Corporate
• Headquarters: Melbourne, Victoria, Australia
• Employee distribution: Australia 100%
• Latest funding: $2.1B, March 2021
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: tilt-renewables

Tilt Renewables is an Australian renewable energy company based in Melbourne, specializing in the generation of electricity from wind and solar sources. Established in 2016, the company operates a portfolio of operational wind and solar farms across Australia, with a strong focus on sustainable energy solutions for businesses and local communities. Tilt Renewables is committed to driving the transition to renewable energy, aiming to create value for all stakeholders involved. The company has a significant operational capacity of 1.3 GW, with additional projects under construction and a pipeline that exceeds 5 GW. Their recent funding of $2.1 billion in March 2021 further strengthens their position in the market. Tilt Renewables also emphasizes community engagement, actively supporting local initiatives and fostering positive relationships with the communities in which they operate.

16. Apex Clean Energy

• Website: apexcleanenergy.com
• Ownership type: Private Equity
• Headquarters: Charlottesville, Virginia, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Latest funding: Other (Debt), December 2024
• Founded year: 2009
• Headcount: 201-500
• LinkedIn: apex-clean-energy

Apex Clean Energy, based in Charlottesville, Virginia, is a private equity-backed company that specializes in renewable energy. Founded in 2009, it focuses on the development, construction, and operation of utility-scale wind and solar energy projects, alongside energy storage and green fuels. Apex serves a variety of clients, including utilities and corporations, aiming to provide sustainable energy solutions that help reduce carbon emissions and meet energy demands. The company boasts a significant portfolio, with over 9 GW of clean energy commercialized and 1,890 MW of clean energy currently under management. Apex is also committed to economic development in rural areas, generating revenue for local communities through its projects. Their innovative approach includes leveraging data analytics to optimize project delivery and enhance operational efficiency. Apex Clean Energy is actively involved in shaping the future of renewable energy in the United States, making substantial strides in the transition to a cleaner energy landscape.

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