Biofuels Compared in National Geographic

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Really dope article and interactive on biofuels in the October 2007 issue: biofuels_ft_hdr.jpg

Corn ethanol (U.S.):

  • $0.68 greater than retail price for energy equivalent of gasoline.
  • 1.3x greater energy output than fossil fuel energy input required for production.
  • 22% reduction in greenhouse gas emissions compared to gasoline.

Sugarcane Ethanol (Brazil):

  • $1.03 less than retail price for energy equivalent of gasoline.
  • 8x greater energy output than fossil fuel energy input required for production.
  • 56% reduction in greenhouse gas emissions compared to gasoline.

Biodiesel (Germany):

  • $0.58 greater than retail price for energy equivalent of petroleum diesel.
  • 2.5x greater energy output than fossil fuel energy input required for production.
  • 68% reduction in greenhouse gas emissions compared to petroleum diesel.

Cellulosic Ethanol (U.S.):

  • Still in R&D stages (no cost comparison).
  • 2 – 36x greater energy output than fossil fuel energy input required for production.
  • 91% reduction in greenhouse gas emissions compared to gasoline.

Algae (U.S.):

  • “High hopes hang in bags of algae outside the Redhawk power plant near Phoenix, Arizona. Researchers say the fast-growing green scum, fed by power plant exhaust, could soak up carbon dioxide while cranking out 5,000 gallons of biodiesel an acre each year – at least in theory.”

We at green.MNP encourage you to go read, play, learn & enjoy!

[ngm.com]

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