James Macnaghten

James Macnaghten founded Caldera with Guy Winstanley in 2017. James is an experienced CEO, entrepreneur, and Cambridge University trained engineer with 15 years’ experience in energy research and development and over 25 years’ experience in business. He built, and still owns, Cambridge’s largest tourist business and for 10 years was CEO of Isentropic, which developed a large-scale thermo-mechanical electricity storage system. He has been either co-inventor or sole inventor on a wide number of thermal energy storage patents and has 20+ patent families to his name. James is passionate about finding the right technological solutions for problems. He is also deeply committed to helping decarbonise our society and believes that many of the answers are already available. When time allows, James can be happily found cycling in the South Downs.