Renewable energy companies focus on producing energy from natural resources that are replenished over time. These resources include solar, wind, hydroelectric, and geothermal energy. By harnessing these sustainable sources, these companies aim to reduce reliance on fossil fuels and lower greenhouse gas emissions, contributing to a cleaner environment. Many renewable energy companies also invest in technology and infrastructure to improve energy efficiency and storage. They often collaborate with governments and organizations to promote policies that support the growth of renewable energy. Notable examples include SolarCity, Vestas, and NextEra Energy, which are leaders in the solar and wind energy sectors.