EcoClosure is a nature-based clean technology venture led by Kyoung Hee Kim, PhD, AIA, NCARB, NOMA.

Building enclosures play an important role in building energy efficiency and good indoor environment quality. Our biochromic technology leverages the superior photosynthetic performance of microalgae in response to climate and air quality conditions. 


This technology functions like high-performance window blinds, regulating solar gains while providing privacy and controlling visual glare as needed. As an air purifier and oxygen machine, this technology removes air pollutants and generates oxygen-rich, clean air for users. Finally, the biomass produced from microalgae windows can be converted into biofuel, contributing to renewable energy solutions.


  • In 2011, the initial prototype of the microalgae integrated building enclosures was developed at UNC Charlotte and was showcased to the public at Washington DC’s National Mall. The next prototyping iteration was supported by AIA Upjohn and UNCC institutional grants.
  • In 2019, EcoClosure LLC was launched with the goal of commercializing microalgae windows supported by the National Science Foundation (NSF). The microalgae window, invented by Dr. Kyoung Hee Kim, is patent pending, and EcoClosure has licensed the IP from UNC Charlotte. 
  • In 2024, we have started the mass production phase of microalgae windows.