Cy Kilbourn is co-founder and Vice President of Engineering at Ekotrope, a software company that makes HERS Rating software solutions and advanced residential energy analysis tools used by 1 in 4 new homes.  He spent time at Brown University and M.I.T. developing the patented algorithms behind Ekotrope software and led the development effort to establish Ekotrope as a RESNET accredited HERS Rating software.  Cy is also a member of the Board of Directors at RESNET, the leading standard setting organization in residential energy efficiency.  Throughout his career, he has worked with some of the largest HERS Rating companies and HERS Providers, utility efficiency programs, and national home builders to streamline processes, improve energy decisions, and make Ekotrope the most widely used HERS Rating software in the U.S.