Author: David Johnston and Scott Gibson    (Read: July 2010)

An outstanding overview of the steps needed to build near Net Zero homes. Emphasizes the importance of a super-insulated, air tight building envelope. I found the case studies of homes built around North America that achieved outstanding energy efficiency to be really interesting. The renovation of an older home that resulted in a air-tightness rating of 0.55 ACH50 was particularly eye-opening.