John Graham

Co-Founder and Head of Projects and International Operations at Cactos

John Graham is a Co-Founder of Cactos Oy, a fast-growing Finnish company delivering industrial battery energy storage systems as a full-service solution. Cactos operates through its own €70M infrastructure fund, streamlining BESS deployment for clients. With a background in oil & gas and renewable energy, John brings strong market insight to the clean energy transition, leading the shift toward smarter, more sustainable power.