Question: Why do you think that developing solar cells is the best abd most efficient source of renewable energy

K Sasitharan answered on 5 Mar 2018:

Solar energy is one of the most powerful renewable technology because it’s relatively cheaper (The sun is there all the time) and a more reliable source than others. For instance, wind energy is a very good alternative but there is a minimal wind velocity requirement for energy to be harnessed out of it. Tidal energy is great, but we have to wait for the tides. Geothermal energy can be obtained only from certain geographic locations.

Solar cells function well even in minimal daylight.