Sustainability Journal

May, 2015 Issue (files are in PDF format)

Why Five?

An explanation for why concurrently using five energy sources makes sense. Together, the five sources provide all of the thermal energy that is needed by buildings and they also reduce the power demand during peak demand periods. This demand reduction exceeds the power consumption of the heat pumps used to adjust the storage temperatures to their required values. The power demand is also shifted to the middle of the night. The result is that the buildings are heated, cooled and their DHW is provided from currently underutilized energy sources while at the same time more power will be made available via the power grid and the peak transmission/distribution currents are reduced.