To design and construct a Path to Net Zero building, project teams must
establish a clear, measurable energy-efficiency target and then define a plan
of approach. Energy Trust has made this goal-setting process as simple as
possible by focusing on two key areas: the Energy Use Intensity, EUI, of the
building and initial design strategies for fundamental building systems.
Energy Use Intensity
EUI is a simple measure of a building’s energy use, expressed as the energy
use per square foot per year in British thermal units, kBtu. For Path to Net
Zero, Energy Trust asks projects to set a minimum EUI target that meets the
2030 Challenge milestone for 2015.
* The numbers shown represent net EUIs, which take renewable power generation into account.
They have been taken from the Commercial Buildings Energy Consumption Survey, CBECS, using
averages for the Western region. They may vary from tables published by Architecture 2030 or
other organizations that use national averages.
System Design Strategies
Once you have selected your EUI target, you’ll then need a plan for achieving
it. To ensure you remain on the Path to Net Zero and meet your energy
reduction goals, Energy Trust asks that you identify potential design strategies
for each major building system as early as possible, including: HVAC, hot
water, lighting, process loads and renewables.
We have created the EUI Goal-Setting and Planning Worksheet to facilitate
this process. Use this worksheet to document your target EUI and initial
design approach for each building system. As you move through design
and construction, your team can refer back to this worksheet to ensure your
project stays on target.
Download Worksheet »