The world is relying heavily on non-renewable, dirty, and poisonous oil, gas, and coal as energy sources. Why not use the giant, glowing ball of energy in the sky instead?
Every day, the Earth is bombarded with the Sun’s powerful rays. Some of the energy is used by plants and trees in photosynthesis, but most of it just heats up the planet. A better use would be to use the energy from the Sun to create electricity. The most common way to do this is by utilizing solar panels. Through the photovoltaic effect, electricity is produced when photons hit the solar panels. The commercially available panels are slowly getting more an more efficient. Currently, the sunlight conversion rate is roughly 21.5%, but this is expected to increase to 40% or even higher in the not-so-distant future.
So why aren’t the world throwing all their research money into solar panel technology? Wouldn’t it be better for everyone if we used a virtually endless, free source of energy instead of having to invest billions to be able to strip-mine non-renewable sources?