This was an original idea I came up with around 2005. I’ve since learned that several companies are actually doing something along these lines.
Solar energy machine – imagine a lot of tubes in a rectangular structure. Then position thousands of small magnifying lenses over top of the tubes with the sun focused on the tubes through them. The tubes would be filled with a liquid and the concentrated rays would create steam. The steam would power a generator and then the liquid would be cooled and returned to the tubes. This would effectively create clean energy with zero emissions. A setup like this in the deserts of Arizona could be very effective.
I think that the possibilities around “green” energy are very fascinating and I find a lot of my ideas center around the ways we can limit our use of finite resources.
Follow-up: Can a beam of light be focused twice? What I mean is can a beam of light that’s been passed through a magnifying glass be passed through another to enhance/amplify it somehow?