Joachim is working much in the energy efficiency arena on  sust.se.
When thinking efficiency you instantly need measuring to know where you are and in what direction you are heading therefore much of the work is about sensing and do good quality measurements to verify the efficiency.Various projects and connections
Ipv6 and  a blog about the movement to having everything connected on IP ”So-IP”  internet of things.Intelligent energy services, a big project partly funded by vinnova iea.sust.se