Tri-O-Gen Group, a Netherlands-based provider of technology to turn waste heat to power, has hired Hans Mart Groen as its chief executive.
Groen was previously managing director of sales and marketing in the Netherlands at utility company Nuon.
Nuon had founded Yellow&Blue Investment Management as an independent venture capital firm with a €40m fund in 2008, which had subsequently been part of a €4.5m ($6m) investment consortium for Tri-O-Gen in July last year.