PV Gap

Dolores Said:

why is solar power renewable?

We Answered:

The sun provides free and renewable energy, and attempts to make use of it go back well into the 19th century. However, its utilization poses two problems. Solar energy is very diffuse and has to be concentrated if it is to be used as an alternative to fossil fuels. It is also difficult to store, and it must therefore be supplemented by another energy source, such as electricity, to provide energy for heating water, when the sun is not shining. While one does not have to pay for the energy one absorbs sitting in the sun, solar energy in a form suitable for heating requires equipment that has to be paid for. The cost for every known application of solar energy is consequently above that needed to produce the same energy traditionally from fossil fuels.