How is solar energy a flow resource?

Solar energy is considered a flow resource because it is continuously available and replenished by the sun's radiation. Unlike finite resources, such as fossil fuels, solar energy can be harnessed as long as the sun shines, making it sustainable. This constant influx of solar energy allows for the generation of electricity and heating without depleting the resource, supporting long-term energy needs. Moreover, it contributes to reducing reliance on non-renewable energy sources, promoting environmental sustainability.