Published in 2011, The Energy Report from WWF makes a bold claim - that the world can be run entirely on sustainable energy by 2050. The Report also claims that the transition will not only be possible, but cost-effective as we already have most of the technology necessary to do it. The scenario will also contribute to equitable access to resources. The 256-page report can be downloaded in full from the web site. In addition, The Energy Report Summary Booklet, which outlines the points in 20 pages, can also be downloaded. For those who just want the main points, they are available on the WWF website. Although the ideas in the report are nearly five years old, they are still provocative and constitute a worthy read for anyone interested in energy policy.