Abstract
The aim of this study was to develop phased reduction prototype targeted at reducing Green House Gas(GHG) arising from the emissions of existing public office buildings. A base mode was established by analyzing the current architectural conditions of existing public office buildings and the specific properties of Green House Gas(GHG) emissions were determined through energy simulations. Green House Gas(GHG) reductions of 15, 25 and 40%, compared to the base level, were obtained by combining technologies for energy efficiency and renewable energy applicability, resulting in recommended phased reduction prototypes.