Performance Solution scenario This Performance Solution scenario has been developed to assist building practitioners in formulating Performance Solutions concerning single storey house energy efficiency. This scenario demonstrates the performance design process used when a proposed single storey house design meets the minimum glazing requirements for energy efficiency using the Deemed-to-Satisfy Provisions, however a cheaper, less energy efficiency glazing option is available that doesn't comply with the provisions. It specifically relates to NCC Volume Two, Performance Requirement P2.6.1 Building in Part 2.6 Energy Efficiency. It is recommended that this is read in conjunction with the Performance Solution Process document.