The IEEE Sustainable ICT Initiative counts with an online portal where advances on Sustainability on ICT are published. In the portal you can find news, podcasts, publications, technology advances, information about conferences and so much more.
The initiative tries to unite knowledge from different areas (such as Cloud Computing and Smart Cities) in order to find standards, models and metrics to unite sustainability and technology all with an holistic point of view.
More information: https://sustainableict.ieee.org/