The Passive House in the Woods in Hudson Wisconsin officially clocked a net-energy positive meter reading in 2011.
What does that mean?
In short, itÂ made more energy than it consumed. While we predicted this with our energy models, we found and learned through monitoring that some equipment and appliances use more energy than assumed. On the flip side, user behavior plays a major role as well and can effectively lower energy consumption over the predicted model. (Source)