Academic and author Vaclav Smil in the OECD Observer summarized the 5 reasons why transition to non fossil energy more difficult than commonly realized. His points are no surprise to anyone in the energy field, but he summarizes them well. The 5 reasons are:
1. The scale of the shift
2. Energy density
3. Power density of energy production
4. Intermittency and thus inability to supply base load energy
5. Geographic distribution
