Strawbale House are very energy efficient.

http://www.grannysstore.com/Do-It-Yourself/strawbale_housebuilding.htm

Strawbale buildings are all the rage in alternative construction today, and with good reason--they are cheap, easy to build, and very energy efficient.

Strawbale buildings are all the rage in alternative construction today, and with good reason--they are cheap, easy to build, and very energy efficient.