The Eta Chi Chapter of Sigma Sigma Sigma invites you to view our brand new, energy-efficient sorority house at the University of Missouri-Columbia. Completed in June 2012, the Tri Sigma sorority house is not only the first Tri Sigma chapter in the world to implement a 30 kW PV system but also the first sorority to implement said system at the MU. Utilizing the consulting services of Construction Art, a company specializing in green building technologies, Tri Sigma was able to discover ways to reduce operating expenses and become more energy efficient. The facility also features GreenVue, a monitoring system that provides a live display of the solar energy production, as well as, educational content to our guests. University of Missouri-Columbia The Eta Chi Chapter of Sigma Sigma Sigma encourages you to come to visit our new home and see how we are trying to make a difference in the environment around us.