Net ZEB Case Studies - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 409

Fig. 7.48 Total annual measured energy consumption [kWh] (NREL,
2013)
The RSF building (herein referring to Phase 1) is a 20,440 m 2 (220,000
ft 2 ) office building designed to accommodate 822 occupants. Construction
cost was US $64.3 million. With its roof-mounted photovoltaic system, the
RSF is designed to produce as much renewable energy as it consumes on
an annual basis. The total energy consumption target, including data center
energy consumption, is 110.7 kWh/m 2 /yr (35.1 kBTU/ft 2 /yr), which is half
the energy of an equivalent, minimally code-compliant building. These
energy goals and their substantiation through simulation were explicitly
included in the project's firm fixed-price design-build contract. The
monitored energy consumption for the first year of building occupation
is 111.7 kWh/m 2 /yr (Hootman, 2012). Figure 7.48 shows the measured
complete energy consumption for 2011. 1)
Computermodelingplayedanimportantrolethroughoutthedesignprocess
and in ensuring the energy goals would be met within the specified budget.