There are countries whose existing industry interests create problems for adoption of renewable energy. Australia and Canada have very large investments in fossil fuels. Australia has enormous coal reserves, and Canada has its tar sands. The US has large investments in coal, gas and oil.
The US also has perhaps the world’s largest investment in new technology. Technology heavyweights such as Apple and Google have committed to expand use of renewable energy. So the current political struggle pits the fossil fuel industry (coal mining states) against the technology sector (California, New England states).
Many countries leading the transition to renewable energy do not have to overcome opposition from local fossil fuel interests. Germany, a manufacturing powerhouse, is shutting down its remaining coal mines by 2018. So . . . without a large fossil fuel industry, Germany has had an easier task in developing both the infrastructure for renewable energy and investment in renewable installations.