The implementation of project based learning and subsequent collaborations between the University, local utilities and area businesses, originally aimed at giving senior level engineering students experience in real world problem solving within the area of sustainability have resulted in a successful model for community engagement. Sustainable Energy Systems, taught in the Mechanical Engineering (ME) Department, focuses on renewable energy technologies, such as photovoltaics, wind energy and solar thermal systems. Sustainable Design and Construction, taught in the Civil Engineering (CE) Department, considers the environmental, economic and societal impacts of sustainable materials, methods and technologies used in building construction. Semester-long projects involved pairing student groups from each class with a local business interested in incorporating sustainable technologies into their organization. Teams from the ME department focused primarily on feasibility studies for solar thermal, solar PV and other heat reclamation technologies. Teams from the CE department analyzed existing buildings for the potential of earning green construction and design certifications and made recommendations for the implementation of other energy and material saving technologies. Each project involved meetings with the owners, a site visit, energy assessment by the local electric utility and required the students to hone their professional communication skills. These projects represent a unique opportunity to provide a practical educational experience for students while advancing sustainability within the community. At the close of the semester, one company moved forward with their project, and actually installed a solar thermal system. Introduction This paper describes the implementation of project based learning into two sustainability-themed classes in the Mechanical Engineering and Civil Engineering departments with the goal of giving senior level engineering students experience in real world problem solving within the area of sustainability. Sustainable Energy Systems is an upper division advanced technical elective offered to mechanical and chemical engineering students. The course historically included an overview of the following sustainable energy technologies: solar thermal and solar photovoltaics, wind energy, geothermal, fuel cells, solar stirling engines and nuclear energy. Sustainable Design and Construction is a senior level technical elective in the Civil Engineering department. The course was originally designed as an introductory course to sustainable building design and construction practices and followed the LEED (Leadership in Energy and Environmental Design) guidelines with the goal of preparing students to take the LEED Green Associate exam following the end of the course.