This home was built from  recycled railway sleepers and left overs. It is north facing (southern hemisphere) and has double glazed low E glass. There are many features including ethanol heating, thermostatic controlled air circulation system, double insulated and thermal mass interior. We have entered it in the timber design awards Australia and we called it the Eco Add. 

http://www.timberawards.com.au/peoples-choice-award

if you like the ECO Add please vote. Thanks