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According to the U.S. DOE Building Energy Data Book (2010), the building sector is responsible for 40\% of the nation's primary energy consumption \cite{Gelman_2011}.  %\footnote{Esterly, S., \& Gelmen, R. \textit{2010 Renewable Energy Data Book.} EERE, 2010.}   Historically, the building envelope has been tasked with the challenge of neutralizing highly variable solar, air, pollutant, and moisture conditions, all while maintaining a constant desired interior condition\cite{selkowitz2003perspectives}. condition \cite{selkowitz2003perspectives}.  %\footnote{S.E. Selkowitz, E.S. Lee, O. Aschehoug. Perspectives on Advanced Facades with Dynamic Glazings and Integrated Lighting Controls.}   In an attempt to maintain indoor conditions, modern building systems rely heavily on fossil-fueled mechanisms and highly insulated or glazed static building envelopes to reject exterior energy flows\cite{krarti2010energy}. flows \cite{krarti2010energy}.  %\footnote{Krarti, Moncef. Energy Audit of Building Systems: An Engineering Approach. 2nd ed. Boca Raton, FL: CRC, 2011. Print.}   To achieve significant progress towards global targets for clean on-site energy self-sufficiency within the building sector, integrating building envelopes with multifunctional energy transformation systems could provided a series of benefits such as: electrical generation, hydrothermal collection, daylighting, reduced cooling loads, humid air dehumidification, water recuperation, distributed heating and cooling, and improved human comfort and well being.  
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