A new study in Energy Policy states that it's possible for the world to move to 100% renewable energy. I think the fact that it could happen is fairly obvious. But if you look at those numbers, I just think there's no way people will be willing to spend the money needed to transition to such an environment. See what you think:
100 Percent Renewable Energy Achievable By 2030: StudyWhat exactly are these measures? According to PhysOrg, over 80 percent of our world's energy supply currently comes from fossil fuels. We would need to build approximately four million wind turbines, nearly 2 billion solar photovoltaic systems, and about 90,000 solar power plants. The 5 MW wind turbines needed are up to three times the capacity of most of our current wind turbines. Doable? Perhaps. Formidable? Most certainly.

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