Mike Hatten and Gary Christensen gave a Tuesday lunch presentation for the September edition of BSUG, a deviation from BSUG's typical meeting time on the second Wednesday of every month. Their message was one that we here at the lab have been trying to pound into the heads of everyone who walks through our doors, that energy modeling is the foundation for defining, developing, and refining high performance building design. The pursuit of the Architecture 2030 challenge or the goal of net zero energy is not about "design as usual" with the addition of massive PV (Photovoltaic) arrays to the roof and calling it good. Their prescription for integrated design is simple: Identify your main load sources; external, internal, infiltration, and taking advantage of the climate as a energy resource to develop architecture that creates small loads and then meeting those loads as efficiently as possible. The attached PDF is a net zero energy case study of the Discover Center of Idaho building, illustrating the process of refinement in load demand to reach their net zero energy goal for the project.