David Clark of Positive Zero is a chartered structural and building services engineer with over 30 years of design experience in Australia and the UK. Since 2001 he has specialised in providing sustainable design solutions and strategy in all building sectors and transport infrastructure. David developed the first Green Star rating tool with the Green Building Council of Australia in 2003 and has chaired their Technical Advisory Group for the past nine years. He is the author of What Colour Is Your Building (www.whatcolourisyourbuilding.com) and has recently written industry guidance on the electrification of buildings and precincts in Australia. David joins the Think.Future podcast to share his thoughts on how to electrify buildings and make them more flexible and responsive as the grid shifts rapidly to renewables.