The first version of REN21’s Renewables Global Futures Report (GFR) published in January 2013 identified a panorama of likely future debates related to the renewable energy transition. As a reflection of the wide range of contemporary thinking by the many experts interviewed for the report, it did not present just one vision of the future but rather a “mosaic” of insights. Given the positive feedback in response to the first edition, a new edition has been prepared, continuing where the last one left off.