energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. RE often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services
Clean and sustainable energy
Technologies tend to have very low energy density and capacity factor
All other energy sources should be organized around RE market-based solutions.