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After Operating Schedule to 12/5 and Roof Construction to R38：
- Explore the Impact of Building Envelope-Related Design Decisions
-Thermal Properties of Wall Surface (Wall Construction) for all orientations
-Glazing % (Window-to-Wall Ratio) for each orientation (North, South, East, West)
-Thermal Properties of Glazing Surfaces for each orientation
-Window Shading amount for each orientation
2. Explore the Potential Impact of Power and Lighting Measures
3.Benefits of Adding Photovoltaic Panels
- combine 1+2+3
Summary: I recommend the fourth one. Combining them together is the most efficient way.