The energy transition tipping point is here NOW! (fossil fuels to renewables)

Underlying the abundance hype over tight oil, tar sands and other “unconventional” sources of liquid fuel has been a dirty little secret: They’re expensive… 

The soaring cost of producing oil has far outpaced the rise in oil prices as the world has relied on these marginal sources to keep production growing since conventional oil production peaked in 2005.

http://www.smartplanet.com/blog/the-take/the-energy-transition-tipping-point-is-here/?tag=nl.e662&s_cid=e662&ttag=e662&ftag=TRE383a915"