Dear all,
Thank-you for earlier responses on my query related to the tool
based on trade-off method for ASHRAE 90.1, 2010 version.
As of now I have coded the script in python and while testing I have
observed that, on increasing the U-value of external wall, EPF of the
building is decreasing however as I understand with increase in U-value,
EPF should increase for climate 1A.
I would appreciate if someone could help me out with that. I am
attaching excel sheet, where I have listed the output values of my tool.

Regards,
L. Sree Manasa,
4th year under graduate,
IIIT-Hyderabad.