Deep Energy Retrofits for Historic Buildings

Historic buildings are a special case in the world of Deep Energy Retrofits, as they bring additional constraints and special structural issues to the forefront. Still, bringing a beloved (but usually energy inefficient) community building into the resource climate of the 21st century is incredibly rewarding.

In this course, designed for architects, engineers, builders, and owners/operators […]

Does Source Energy = Site Energy?

On the Zero Net Energy Homes discussion board, Marc Rosenbaum clarifies… when it comes to electricity, IS source energy the same as site energy?


Student 1: The (course) book says that for electricity, source energy equals site energy… but, there is a small difference. [According to the U.S. Energy Information Administration] About 6% of the electricity is lost […]