The case 2 calculator has pointed us towards using Case 2 - Option 1 for our Existing Retail Mall project located outside of the US. Under this option, the calculator states that an alternate source EUI data should be entered. This, I assume would be the national average source EUI - which is not available in Malaysia.
As such, would it be acceptable is we used Case 2B - project building historical data instead?
Some general guidance on selecting the right case would be much appreciated! =)