great passive solar design- I would plant row of deciduous trees in front of glass so that in the winter that could act as a giant trombe wall but be shaded to keep it cool in the summer. Trees that max out at 2 stories would allow south face 3rd level roof to accommodate panels!
". . . the Earthship is the epitome of sustainable design and construction. No part of sustainable living has been ignored in this ingenious building." Earthships can be built in any part of the world, in any climate and still provide electricity, potable water, contained sewage treatment and sustainable food production.
The rubble trench is a cheap and effective foundation that combines drainage with load distribution. The basic principle of it has been around for thousands of years but American architect Frank Lloyd Wright brought it into the 20th century. More at www.naturalhomes.org/permahome/rubble-trench-foundation.htm