We may not need futurist and inventor Raymond Kurzweil to tell us that solar energy is going to rule in 20 years or the fact that nanotechnology could give global warming a big chill (pdf link), but it’s always a good thing to be reassured. He is one of the distinguished futurists that predicted the demise of the Soviet Union and foresaw the explosive growth of the Internet and wireless systems.

Getting back to solar energy, Kurzweil said that we already have 10,000 times more sunlight than we would need to convert into electricity and serve the whole world. However, 1% of total energy we use comes from sunlight and wind. He also stated that we may be 5 years away from the point where solar power becomes efficient and competitive to fight fossil fuels.
“We also see an exponential progression in the use of solar energy,” he said. “It is doubling now every two years. Doubling every two years means multiplying by 1,000 in 20 years. At that rate we’ll meet 100 percent of our energy needs in 20 years.”
A bright future
The technology is going to develop and becoming efficient is similar to using nano-engineered materials for solar panels which not only makes them lighter but also easier to install. This is something Google likes and invested in it ever since the technology was developed.
Other technologies that will bring solar power mainstream are solar concentrators made of parabolic mirrors that would collect solar energy from a very large area and sends it to a small collector or a small but efficient steam turbine.
“You could, for example, create hydrogen or hydrogen-based fuels from the energy produced by solar panels and then use that to create fuel for fuel cells, he said. There are already nano-engineered fuel cells, microscopic in size, that can be scaled up to store huge quantities of energy”, Kurzweil said.
Knowing Raymond Kurzweil’s history as a futurist, we can only be happy that the technology is on the right track to “rule” in 20 years. If you trust him and would like to know more on what is going to happen you can read his predictions : The Age of Intelligent Machines(from 1990), The Age of Spiritual Machines (from 1999) and The Singularity is Near (from 2005).
photo by Jan Egil Kristiansen