This report investigates the viability and sustainability of renewable energy sources, focusing on wind, bioenergy, and solar energy, with a primary emphasis on wind and solar due to their scalability and potential for zero carbon emissions. The study evaluates the ability of renewable energy to replace conventional sources such as natural gas, nuclear energy, and coal, considering factors like intermittency and the need for backup systems. The analysis explores the impact of renewable energy on carbon emissions, the role of energy storage, and the lifecycle assessment of various energy sources, including biofuels and hydropower. It also assesses the viability of renewable fuels in transport, such as hydrogen and biodiesel, comparing their energy density, scalability, and cost to conventional fuels. The report concludes by examining the cost savings, job creation, and potential for lower greenhouse emissions associated with renewable energy sources.