Topic: ComEd Electric meter issues

We manage a 105 unit 1927 vintage building that used to be a hotel (a long time ago). Since the building was new, there has only been one master meter for the whole building, and we include electricity in the rent. We are needing to upgrade our ComEd connection to get a higher load due to increased usage. ComEd is saying that in order for us to do that, each individual apartment must be metered separately. Does this sound right? In order for this to happen, we would have to install over a hundred meters, make wiring changes, and re-write all of our leases! I could find nothing in Chicago building codes, or in ComEd documentation that requires this.

Any suggestions?