Energy Switch S08 E10 Solar and Wind: Success or Failure?

We hear conflicting information about solar and wind energy. They’re the cheapest form of electricity. But they make electricity more expensive. They’re the fastest growing electricity. But they make only a small portion of total energy. Are they the future? Or uncompetitive without subsidy? Dan Kammen, energy scientist from Johns Hopkins, and Robert Bryce, energy author and journalist, debate.