The presentation illustrates the financial prudence of net zero buildings today. From the outset of design through construction and operation, Maclay Architects and Energy Balance utilize comparative energy modeling and cost estimating to determine financial benefits of net zero buildings compared to code compliant or intermediate building solutions. This detailed analysis demonstrates how fossil fuel powered buildings no longer make economic sense. Case studies illustrate the detailed and interwoven financial/energy analysis process used to convince building owners to pursue aggressive energy conservation. These include a net zero feasibility study for a mixed use office/manufacturing/residential project at NRG, a 65,000 sf office renovation and a 15,000 sf new dining hall. This presentation provides a clear financial analysis process, metrics, and templates to guide net zero projects from initiation to completion/operation. Builders, developers, owners, investors and designers will gain the understanding necessary to successfully make the financial case for net zero buildings.