1. Tesla: Tesla is a major player in the field of renewable energy and clean technologies. The company is famous for its electric vehicles, but it is also involved in energy storage, solar power, and other sustainable solutions.

2. First Solar: First Solar is a leading manufacturer of photovoltaic (PV) solar panels and a provider of solar energy solutions for commercial and utility-scale projects.

3. Vestas: Vestas is one of the world’s largest suppliers of wind turbines, and it is a key player in the wind energy industry.

4. SunPower: SunPower is a leading provider of solar energy solutions, including residential, commercial, and utility-scale installations.

5. Siemens Gamesa: Siemens Gamesa is a major player in the wind energy industry, providing wind turbines and related solutions for onshore and offshore projects.

6. General Electric: General Electric (GE) is involved in a wide range of energy-related technologies, including renewable energy and clean technologies. The company is a major player in the wind energy and energy storage industries.

7. Duke Energy: Duke Energy is a large utility company that is actively investing in renewable energy and clean technologies, including solar and wind power.

8. Enphase Energy: Enphase Energy is a leading provider of microinverter systems and energy storage solutions for residential and commercial solar installations.

9. NextEra Energy: NextEra Energy is the largest provider of wind and solar power in the United States, and it is a major player in the energy storage industry.

10. Bloom Energy: Bloom Energy is a provider of fuel cells and other clean energy solutions for commercial and industrial applications.