How will the IgCC differ from other International Codes addressing Energy Conservation, Commercial Buildings, High Performance Buildings or from the International Building Code (IBC) itself?

One of the values of the IgCC is that it will be designed to coordinate and integrate with existing I-Codes.

The IgCC will most likely present various tiers for jurisdictions to apply to commercial and high performance building stock, but in a manner that incorporates the health and safety features of the other I-Codes.