Finally have I run across a European Energy Flow Sankey diagram in a post on Google Groups…
European (EU-27) Energy Usage:
European (EU-27) Energy Usage (renewable energy sources only):
These two images were posted by Herman B. (apparently linked somehow to the European Comission) in reply to an inquiry by Andrew D. I don’t know the original source or publication. Flows are in petajoule (PJ) for the year 2006.
In my optinion they could do without the background image and the photos, but nevertheless, these are fine Sankey diagram examples.