This document summarizes the United Kingdom's energy generation outlook from 2014 to 2035 based on different scenarios. It finds that coal plant closures will be aggressive across scenarios, with gas generation increasing to fill the gap. Security of supply risks decrease by the mid-2020s due to capacity mechanisms. Import dependency in 2035 ranges widely from 40-90% depending on the role of domestic shale gas development. Technology options broaden beyond 2020.