"Renewable/Alternative. any energy resource that is naturally regenerated over a short time scale and either derived directly from solar energy (solar thermal, photochemical, and photoelectric), indirectly from the sun (wind, hydropower, and photosynthetic energy stored in biomass), or from other natural energy flows (geothermal, tidal, wave, and current energy). Contrasted with NONRENEWABLE ENERGY forms Such as oil, coal, and uranium".
renewable energy. (2014). In C. Cleveland, & C. Morris (Eds.), Dictionary of energy (2nd ed.). Oxford, UK: Elsevier Science & Technology. Retrieved from https://saintleo.idm.oclc.org/login?url=https://search.credoreference.com/content/entry/este/renewable_energy/0?institutionId=796