Can I build a solar log home?
Log homes are a very difficult fit with solar. The main problems are that it is difficult to get them really energy-efficient, especially with regards to air infiltration; secondly they typically do not have the large south-facing windows that passive solar needs. Log home manufacturers can produce much tighter homes than those direct from the woodlot, and, as such, offer better solar potential.
Of course, all things are possible and a creative designer (yourself, for instance, if you took the Solar Home Design Course) could overcome these problems.