For this exercise, I tried to make somewhat subtle/easily achievable design changes to see how low the EUI could get even without going too extreme.
- Omitted uninsulated wall construction
- Set maximum WWR for all walls to 30%
- Omitted single glazing option for all windows
- Set minimum window shading amount to 1/2 window height for all windows
Power and Lighting
- Set maximum value for plug load efficiency to 1.6 W/sf
- Set maximum value for lighting efficiency to 1.1 W/sf
- Set daylighting & occupancy controls to “Daylighting & Occupancy Controls”
- Set minimum surface coverage to 75%
- Omitted 16% panel efficiency option
- Omitted 10 year payback limit option
As you can see, the EUI continued to drop as I added more and more design improvements. Considering that I was trying to make fairly subtle/reasonable design changes, I was quite pleased with the results. I even got below the EUI set by the Architecture 2030 Challenge. This just goes to show that designing an energy efficient building does not have to be super difficult.