In the current utility and building management landscape, sustainability and resilience goals, rising energy costs, lean operation and maintenance (O&M) budgets, and natural or human-induced disasters present fundamental challenges in the way communities and campuses manage their energy and facility resources. This paper focuses on two key concepts -- sustainability and resilience -- and their applications in the current design and construction industry. Examples of the assessment of energy efficiency improvements and peak demand mitigation opportunities in a community scale microgrid as well as energy master planning on campuses served by district energy plants will be presented to support both community-level and campus-level energy efficiency initiatives through the concepts of sustainability and resilience.