Renewable energy sources include solar, wind, hydroelectric, geothermal, and biomass energy.

Certainly. Solar energy is harnessed from sunlight using solar panels. Wind energy is generated from wind turbines. Hydroelectric power comes from moving water, typically rivers or dams. Geothermal energy uses heat stored beneath the Earth's surface. Biomass energy is produced from organic materials like wood, crops, or waste.

Renewable energy sources are sustainable, reduce greenhouse gas emissions, and decrease dependence on fossil fuels.

Yes, challenges include high initial costs, intermittency issues, and the need for suitable locations for installation.