erraForrn Gebel, LLC, SunEdeson Holdings Corporation and SunEdison 10.17 Form of Perot bwestrrent Ageerrent by ard between TerraForm Gobs. Inc. and SurEcbson. Inc 10 13' Unit Purchase Agreement dated as of May 6, 2015, by and among TerraForm Gebel LLC and the purchasers named therein 1014• Regalia on R