The approach to reducing the energy consumption of a building starts with conservation before considering more efficient energy production and/or
procurement. The best energy saved is the energy that is not required in the first place. To create a net zero retail building we will address energy efficiency measures in the following order:
Since virtually any building, with enough capital and site area for renewable technologies, can obtain a net zero designation, a single design is of little use. Five separate designs ranging from standard practice to ‘top of the line’, each showcasing a specific design upgrade, are presented for comparison and analysis. The following figure presents the total energy required to be offset for each scenario.
Figure 3: Total Energy Use 4 All Scenarios
The effect of the five scenarios on energy density, PV array size and PV array cost, along with a general description of each is presented in the table below. More detailed discussion of each scenario is presented in dedicated sections.
Table 2: Option Summary