Spark Energy Inc. has appointed Kevin Lyon as its chairman. Currently, Lyon serves at Next Energy Solar Fund plc as a chairman. He has also worked with Drilling Systems, DCK Concessions, Cutis Development, Mono Consultants, Ambrian Plc, Smart Metering Systems, Valiant Petroleum Plc, Buy As You View, Adelie Food Holdings, David Lloyd Leisure, Bezier, Rigblast Energy Services Ltd, Wyndeham Press Group, Phase Eight Ltd, Booker Plc, Julian Graves, Whittards of Chelsea, MK One, Craneware Plc, Incline GTS, 3i Group Plc, British Linen Bank and Grant Thornton LLP.