<human>:  Explain the concept of green energy.
<bot>: Green energy is energy generated from renewable sources that have a minimal or no negative effects on the environment. Examples of green energy sources include solar, wind, geothermal, hydropower, and hydrogen energy. These clean energy sources are considered green because they do not generate environmental pollutants such as carbon dioxide or other pollutants associated with burning fossil fuels. Green energy sources are a more sustainable option than traditional energy sources, and can help reduce our environmental impact. Additionally, green energy sources have the potential to provide cost-savings and economic benefits.