Study claims 100 percent renewable energy possible by 2030
Achieving 100 percent renewable energy would mean the building of about four million 5 MW wind turbines, 1.7 billion 3 kW roof-mounted solar photovoltaic systems, and around 90,000 300 MW solar power plants.
Mark Delucchi, one of the authors of the report, which was published in the journal Energy Policy, said the researchers had aimed to show enough renewable energy is available and could be harnessed to meet demand indefinitely by 2030.
Delucchi and colleague Mark Jacobson left all fossil fuel sources of energy out of their calculations and concentrated only on wind, solar, waves and geothermal sources. Fossil fuels currently provide over 80 percent of the world’s energy supply. They also left out biomass, currently the most widely used renewable energy source, because of concerns about pollution and land-use issues. Their calculations also left out nuclear power generation, which currently supplies around six percent of the world’s electricity.
To make their vision possible, a great deal of building would need to occur. The wind turbines needed, for example, are two to three times the capacity of most of today’s wind turbines, but 5 MW offshore turbines were built in Germany in 2006, and China built its first in 2010. The solar power plants needed would be a mix of photovoltaic panel plants and concentrated solar plants that concentrate solar energy to boil water to drive generators. At present only a few dozen such utility-scale solar plants exist. Energy would also be obtained from photovoltaic panels mounted on most homes and buildings.
Study claims 100 percent renewable energy possible by 2030
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