IES-VE User Forum

The NCM changes to methodology and fuel emissions factors apply equally to the reference building and the actual building so this shouldn't have a substantial impact on the ratings. If anything, the updated methodologies provide greater opportunity to account for daylight dimming, constant ...

One thing to bear in mind is that there were no EPC conventions pre 2010, so the original EPC may not have included the same details as the one you've done to the current conventions.

It may be worthwhile downloading the xml file from the epc register to see what inputs were included in the ...