In 2012, Sara set up Tempus Energy and began developing the tech platform for the future utility. The Tempus platform uses algorithms, machine learning and DSR technology to reduce energy cost for customers, boosting the efficiency of renewables and reducing reliance on stand-by fossil fuel peaking plant. Tempus recognises building flexibility such as customer consumption flexibility and battery storage is crucial to cost effective decarbonisation and is committed to outcompeting fossil fuel. In 2014, Tempus challenged the UK Capacity Market design in the European Court because it favours fossil fuel generation over innovation. Tempus launched the first flexible electricity retailer in the world, opening up the new business model for the future utility. Sara sits on numerous industry committees, is a Director of the Association of Decentralised Energy and a member of the Strategic Advisory Council for Energy for the Engineering & Physical Sciences Research Council.