This paper reports the design process and measured performance of the University at Buffalo's net-zero energy prototype, the GRoW home, designed for the 2015 Solar Decathlon in Irvine, CA. Sustainable design intentions and pragmatic constraints are discussed in addition to the energy considerations for each design element. The GROW home includes features designed to support a unique lifestyle, including an integrated greenhouse (the "GRoWlarium") and various operable systems under the occupant's control. Whole-building energy simulations, spreadsheet calculations, daylighting simulations, and proprietary sizing software were used in design decision making. Energy performance predictions and measured results from the 2015 competition are discussed. The home was predicted to consume 177.11 kWh, and produce 238 kWh during the competition; it actually consumed 161 kWh, and produced 191 kWh, an error of 3% and 8%, respectively. The GROW home ultimately had the lowest energy consumption of any SD 2015 house which successfully performed all competition-required tasks. (C) 2018 Elsevier Ltd. All rights reserved.