Killian runs EnergyTag’s, a non-profit focused on enabling the granular electricity accounting that will transform what it means for companies and products like hydrogen to be 100% clean. Alongside the world’s top experts, Killian led the process of drafting the EnergyTag Standard, which created the Granular Certificate, a robust hourly energy attribute tracking. The Standard is supported by hundreds of organisations including dozens of the world’s leading sustainability players. EnergyTag regularly advises governments on why and how their carbon accounting frameworks should be reformed. Prior to joining EnergyTag, Killian managed global energy strategy at Air Liquide, one of the world’s largest hydrogen producers. Killian holds a Masters degree in Energy Technologies from the University of Cambridge.