The homeless population in Tempe, AZ are vulnerable to social isolation and heat-related illness and death, especially during Arizona’s unforgiving summers. Of this population, there are nearly 400 reported unsheltered homeless individuals in Tempe, according to Maricopa County’s 2020 Point-In-Time Count Report, and Tempe lacks sufficient shelter space and community spaces for this population, both of which are important to mitigating the aforementioned issues. Pallet Shelters is a for-profit company that sells prefabricated temporary shelters. These small shelters can be put together to form larger spaces that can be used for other purposes, such as providing a place for the community to gather. These temporary structures are then assembled in communities with communal bathrooms. However, these communities don’t yet exist in Tempe, and would require significant energy costs to run due to Arizona’s sweltering summers. And so, the issue the Shelter Spaces is tackling is: How can energy costs associated with cooling a 400 sq. ft. community shelter manufactured by Pallet Shelters be decreased?