This report presents a VTT roadmap on ICT for environmental sustainability, based on the assessments and evaluations made by VTT technology experts. The roadmap is divided into three themes. Empowering people means using ICT to raise people’s awareness of the environmental impact of their actions and to channel their behavior in a more environmentally-friendly direction. Extending natural resources involves reducing the use of diverse environmentally unsustainable re-sources through ICT-based solutions. Optimising systems refers to minimizing the environmental load of diverse systems by optimising their operation. As a synthesis, four focal topics have been identified within the roadmap themes that are most promising for further investigation. These are: 1) environmentally sustainable consumption, 2) smart energy and buildings, 3) lifecycle efficient production, and 4) optimised and adaptive networks.