Dr. Len Humphreys

Chief Executive Officer Linkedin

Dr Len Humphreys is an entrepreneur, innovator and veteran of the science, technology, and clean energy industries. Len has pioneered low-carbon technology solutions and renewable energy in Australia and internationally for over 35 years. He is the Co-Founder of Licella and was instrumental in the conception and development of Licella’s Cat-HTR™ technology, including as the inventor of several patents around the Cat-HTR™ process.

Len served as Licella’s CEO between 2007 and 2023, when he moved into the role of Executive Chairman of the Licella Board. As of May 2025, Len has resumed the role of CEO and Managing Director.

In 2015, Len Co-Founded Gelion Technologies, battery technology innovators now listed on AIM in the UK.

Len holds a PhD in Chemistry from Durham University (UK), is a Chartered Chemist and is a Fellow of the Royal Society of Chemistry in the UK. Previously Len was a Director and Managing Director of several renewable energy companies including Novera Energy, a renewable energy company that was listed on the AIM and also the ASX listed IBA Health (now I-Soft), a healthcare IT software provider.

In addition, Len held Managing Director and Regional President roles inside the European-based Invensys Group, which was one of the world’s largest industrial process automation conglomerates. In Europe, Len was also a senior executive in Mannesmann Group, the German multinational specialising in engineering, manufacturing and telecommunications, including as CEO of Hartmann and Braun in the UK.