Baseline started off at 49.76 EUI with operating schedule 12/5 and roof construction R38
For the WWR I put 40% for east and west but 15% for north because the north side usually doesn't get that much light / seems to not have rooms that need the light. South side I put 80% WWR to maximize sunlight.
Wall construction I used R38 wood to match the roof. For all glass panes I used triple pane with low E to minimize radiation. As for window shading, I used 1/2 window height for east, west , south and 1/3 for north.
After all these 'upgrades', the EUI dropped from 49.8 to 41.9. Not bad for just building envelope changes.
With power and lighting, we can change a lot. The biggest factors that I noticed were plug load efficiency and lighting efficiency. It makes sense for lighting because based on one of the previous modules that we saw, lighting makes up a big part of the building's energy use. With the highest efficiency for both plug load and lighting, we can expect a decrease in EUI from about 42 to 26. That's a bigger jump than just with building envelope changes.
Daylighting and Occupancy Controls made a difference but not by much
As for photovoltaic improvements:
I feel like it would've made the building really ugly if the entire roof was covered in solar panels. I just chose 75% because that seemed like the best balance between functionality and aesthetics. This decreased the EUI by quite a bit. I also set the efficiency to the highest as I just assumed we could get access to the best panels out there.
As for the payback limit, setting it to 20 vs 30 years doesn't make much of a difference. However, there is a big decrease from 10 years to 20 years so I set it at 20 years.
Added together, the PV improvements can take the building from 26 EUI to -7 EUI. This means that it's a high performance building and meets the ARCH2030 standards too. Exciting!
