Thomas Friedman New York Times Op/Ed columnist had three policy prerequisites for growing a renewable energy industry.
The implementation of all three of these elements have lead to growth of a renewable industry.

What are those three prerequisites?
1)Any Business or homowner can generate Solar Energy.
2) If a Business or homeowner decide to generate Solar Energy the power utility has to connect them to the grid.
3) The Utility has to purchase the power generated for a predictable period at a price that is a no-brainer good deal for the family or Business putting solar panels on their rooftop.

Good Policy for safe, clean renewable energy production where the price of the fuel is fixed at free...and reliably so for the next 10,000 years.