"A provocative recent essay in Nature Energy
by two solar analysts, Varun Sivaram and Shayle Kann, argues that solar
still has some hard economic obstacles to overcome before it can become
a major energy source and provide (let's say) one-third of our power.
Overcoming these hurdles could mean the difference between solar
leveling off as a niche technology and solar taking over the world."
How cheap does solar power need to get before it takes over the world?
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